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for-6.4/block-2023-04-21

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Merge tag 'for-6.4/block-2023-04-21' of git://git.kernel.dk/linux

Pull block updates from Jens Axboe:

 - drbd patches, bringing us closer to unifying the out-of-tree version
   and the in tree one (Andreas, Christoph)

 - support for auto-quiesce for the s390 dasd driver (Stefan)

 - MD pull request via Song:
      - md/bitmap: Optimal last page size (Jon Derrick)
      - Various raid10 fixes (Yu Kuai, Li Nan)
      - md: add error_handlers for raid0 and linear (Mariusz Tkaczyk)

 - NVMe pull request via Christoph:
      - Drop redundant pci_enable_pcie_error_reporting (Bjorn Helgaas)
      - Validate nvmet module parameters (Chaitanya Kulkarni)
      - Fence TCP socket on receive error (Chris Leech)
      - Fix async event trace event (Keith Busch)
      - Minor cleanups (Chaitanya Kulkarni, zhenwei pi)
      - Fix and cleanup nvmet Identify handling (Damien Le Moal,
        Christoph Hellwig)
      - Fix double blk_mq_complete_request race in the timeout handler
        (Lei Yin)
      - Fix irq locking in nvme-fcloop (Ming Lei)
      - Remove queue mapping helper for rdma devices (Sagi Grimberg)

 - use structured request attribute checks for nbd (Jakub)

 - fix blk-crypto race conditions between keyslot management (Eric)

 - add sed-opal support for reading read locking range attributes
   (Ondrej)

 - make fault injection configurable for null_blk (Akinobu)

 - clean up the request insertion API (Christoph)

 - clean up the queue running API (Christoph)

 - blkg config helper cleanups (Tejun)

 - lazy init support for blk-iolatency (Tejun)

 - various fixes and tweaks to ublk (Ming)

 - remove hybrid polling. It hasn't really been useful since we got
   async polled IO support, and these days we don't support sync polled
   IO at all (Keith)

 - misc fixes, cleanups, improvements (Zhong, Ondrej, Colin, Chengming,
   Chaitanya, me)

* tag 'for-6.4/block-2023-04-21' of git://git.kernel.dk/linux: (118 commits)
  nbd: fix incomplete validation of ioctl arg
  ublk: don't return 0 in case of any failure
  sed-opal: geometry feature reporting command
  null_blk: Always check queue mode setting from configfs
  block: ublk: switch to ioctl command encoding
  blk-mq: fix the blk_mq_add_to_requeue_list call in blk_kick_flush
  block, bfq: Fix division by zero error on zero wsum
  fault-inject: fix build error when FAULT_INJECTION_CONFIGFS=y and CONFIGFS_FS=m
  block: store bdev->bd_disk->fops->submit_bio state in bdev
  block: re-arrange the struct block_device fields for better layout
  md/raid5: remove unused working_disks variable
  md/raid10: don't call bio_start_io_acct twice for bio which experienced read error
  md/raid10: fix memleak of md thread
  md/raid10: fix memleak for 'conf->bio_split'
  md/raid10: fix leak of 'r10bio->remaining' for recovery
  md/raid10: don't BUG_ON() in raise_barrier()
  md: fix soft lockup in status_resync
  md: add error_handlers for raid0 and linear
  md: Use optimal I/O size for last bitmap page
  md: Fix types in sb writer
  ...
This commit is contained in:
Linus Torvalds 2023-04-26 12:52:58 -07:00
commit 9dd6956b38
97 changed files with 2260 additions and 1773 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
Documentation/ABI/stable/sysfs-block
View File

@ -336,18 +336,11 @@ What: /sys/block/<disk>/queue/io_poll_delay
Date: November 2016
Contact: linux-block@vger.kernel.org
Description:
[RW] If polling is enabled, this controls what kind of polling
will be performed. It defaults to -1, which is classic polling.
[RW] This was used to control what kind of polling will be
performed. It is now fixed to -1, which is classic polling.
In this mode, the CPU will repeatedly ask for completions
without giving up any time. If set to 0, a hybrid polling mode
is used, where the kernel will attempt to make an educated guess
at when the IO will complete. Based on this guess, the kernel
will put the process issuing IO to sleep for an amount of time,
before entering a classic poll loop. This mode might be a little
slower than pure classic polling, but it will be more efficient.
If set to a value larger than 0, the kernel will put the process
issuing IO to sleep for this amount of microseconds before
entering classic polling.
without giving up any time.
<deprecated>
What: /sys/block/<disk>/queue/io_timeout

3
Documentation/block/inline-encryption.rst
View File

@ -270,8 +270,7 @@ Request queue based layered devices like dm-rq that wish to support inline
encryption need to create their own blk_crypto_profile for their request_queue,
and expose whatever functionality they choose. When a layered device wants to
pass a clone of that request to another request_queue, blk-crypto will
initialize and prepare the clone as necessary; see
``blk_crypto_insert_cloned_request()``.
initialize and prepare the clone as necessary.
Interaction between inline encryption and blk integrity
=======================================================

8
Documentation/fault-injection/fault-injection.rst
View File

@ -52,6 +52,14 @@ Available fault injection capabilities
status code is NVME_SC_INVALID_OPCODE with no retry. The status code and
retry flag can be set via the debugfs.
- Null test block driver fault injection
inject IO timeouts by setting config items under
/sys/kernel/config/nullb/<disk>/timeout_inject,
inject requeue requests by setting config items under
/sys/kernel/config/nullb/<disk>/requeue_inject, and
inject init_hctx() errors by setting config items under
/sys/kernel/config/nullb/<disk>/init_hctx_fault_inject.
Configure fault-injection capabilities behavior
-----------------------------------------------

2
arch/s390/include/uapi/asm/dasd.h
View File

@ -78,6 +78,7 @@ typedef struct dasd_information2_t {
* 0x040: give access to raw eckd data
* 0x080: enable discard support
* 0x100: enable autodisable for IFCC errors (default)
* 0x200: enable requeue of all requests on autoquiesce
*/
#define DASD_FEATURE_READONLY 0x001
#define DASD_FEATURE_USEDIAG 0x002
@ -88,6 +89,7 @@ typedef struct dasd_information2_t {
#define DASD_FEATURE_USERAW 0x040
#define DASD_FEATURE_DISCARD 0x080
#define DASD_FEATURE_PATH_AUTODISABLE 0x100
#define DASD_FEATURE_REQUEUEQUIESCE 0x200
#define DASD_FEATURE_DEFAULT DASD_FEATURE_PATH_AUTODISABLE
#define DASD_PARTN_BITS 2

5
block/Kconfig
View File

@ -215,11 +215,6 @@ config BLK_MQ_VIRTIO
depends on VIRTIO
default y
config BLK_MQ_RDMA
bool
depends on INFINIBAND
default y
config BLK_PM
def_bool PM

1
block/Makefile
View File

@ -30,7 +30,6 @@ obj-$(CONFIG_BLK_DEV_INTEGRITY) += bio-integrity.o blk-integrity.o
obj-$(CONFIG_BLK_DEV_INTEGRITY_T10) += t10-pi.o
obj-$(CONFIG_BLK_MQ_PCI) += blk-mq-pci.o
obj-$(CONFIG_BLK_MQ_VIRTIO) += blk-mq-virtio.o
obj-$(CONFIG_BLK_MQ_RDMA) += blk-mq-rdma.o
obj-$(CONFIG_BLK_DEV_ZONED) += blk-zoned.o
obj-$(CONFIG_BLK_WBT) += blk-wbt.o
obj-$(CONFIG_BLK_DEBUG_FS) += blk-mq-debugfs.o

1
block/bdev.c
View File

@ -419,6 +419,7 @@ struct block_device *bdev_alloc(struct gendisk *disk, u8 partno)
bdev->bd_inode = inode;
bdev->bd_queue = disk->queue;
bdev->bd_stats = alloc_percpu(struct disk_stats);
bdev->bd_has_submit_bio = false;
if (!bdev->bd_stats) {
iput(inode);
return NULL;

20
block/bfq-cgroup.c
View File

@ -497,17 +497,11 @@ static struct blkcg_policy_data *bfq_cpd_alloc(gfp_t gfp)
bgd = kzalloc(sizeof(*bgd), gfp);
if (!bgd)
return NULL;
bgd->weight = CGROUP_WEIGHT_DFL;
return &bgd->pd;
}
static void bfq_cpd_init(struct blkcg_policy_data *cpd)
{
struct bfq_group_data *d = cpd_to_bfqgd(cpd);
d->weight = cgroup_subsys_on_dfl(io_cgrp_subsys) ?
CGROUP_WEIGHT_DFL : BFQ_WEIGHT_LEGACY_DFL;
}
static void bfq_cpd_free(struct blkcg_policy_data *cpd)
{
kfree(cpd_to_bfqgd(cpd));
@ -1111,9 +1105,11 @@ static ssize_t bfq_io_set_device_weight(struct kernfs_open_file *of,
struct bfq_group *bfqg;
u64 v;
ret = blkg_conf_prep(blkcg, &blkcg_policy_bfq, buf, &ctx);
blkg_conf_init(&ctx, buf);
ret = blkg_conf_prep(blkcg, &blkcg_policy_bfq, &ctx);
if (ret)
return ret;
goto out;
if (sscanf(ctx.body, "%llu", &v) == 1) {
/* require "default" on dfl */
@ -1135,7 +1131,7 @@ static ssize_t bfq_io_set_device_weight(struct kernfs_open_file *of,
ret = 0;
}
out:
blkg_conf_finish(&ctx);
blkg_conf_exit(&ctx);
return ret ?: nbytes;
}
@ -1301,8 +1297,6 @@ struct blkcg_policy blkcg_policy_bfq = {
.legacy_cftypes = bfq_blkcg_legacy_files,
.cpd_alloc_fn = bfq_cpd_alloc,
.cpd_init_fn = bfq_cpd_init,
.cpd_bind_fn = bfq_cpd_init,
.cpd_free_fn = bfq_cpd_free,
.pd_alloc_fn = bfq_pd_alloc,

19
block/bfq-iosched.c
View File

@ -129,7 +129,6 @@
#include "elevator.h"
#include "blk.h"
#include "blk-mq.h"
#include "blk-mq-tag.h"
#include "blk-mq-sched.h"
#include "bfq-iosched.h"
#include "blk-wbt.h"
@ -649,6 +648,8 @@ static bool bfqq_request_over_limit(struct bfq_queue *bfqq, int limit)
sched_data->service_tree[i].wsum;
}
}
if (!wsum)
continue;
limit = DIV_ROUND_CLOSEST(limit * entity->weight, wsum);
if (entity->allocated >= limit) {
bfq_log_bfqq(bfqq->bfqd, bfqq,
@ -6232,7 +6233,7 @@ static inline void bfq_update_insert_stats(struct request_queue *q,
static struct bfq_queue *bfq_init_rq(struct request *rq);
static void bfq_insert_request(struct blk_mq_hw_ctx *hctx, struct request *rq,
bool at_head)
blk_insert_t flags)
{
struct request_queue *q = hctx->queue;
struct bfq_data *bfqd = q->elevator->elevator_data;
@ -6255,11 +6256,10 @@ static void bfq_insert_request(struct blk_mq_hw_ctx *hctx, struct request *rq,
trace_block_rq_insert(rq);
if (!bfqq || at_head) {
if (at_head)
list_add(&rq->queuelist, &bfqd->dispatch);
else
list_add_tail(&rq->queuelist, &bfqd->dispatch);
if (flags & BLK_MQ_INSERT_AT_HEAD) {
list_add(&rq->queuelist, &bfqd->dispatch);
} else if (!bfqq) {
list_add_tail(&rq->queuelist, &bfqd->dispatch);
} else {
idle_timer_disabled = __bfq_insert_request(bfqd, rq);
/*
@ -6289,14 +6289,15 @@ static void bfq_insert_request(struct blk_mq_hw_ctx *hctx, struct request *rq,
}
static void bfq_insert_requests(struct blk_mq_hw_ctx *hctx,
struct list_head *list, bool at_head)
struct list_head *list,
blk_insert_t flags)
{
while (!list_empty(list)) {
struct request *rq;
rq = list_first_entry(list, struct request, queuelist);
list_del_init(&rq->queuelist);
bfq_insert_request(hctx, rq, at_head);
bfq_insert_request(hctx, rq, flags);
}
}

1
block/bfq-iosched.h
View File

@ -20,7 +20,6 @@
#define BFQ_DEFAULT_QUEUE_IOPRIO 4
#define BFQ_WEIGHT_LEGACY_DFL 100
#define BFQ_DEFAULT_GRP_IOPRIO 0
#define BFQ_DEFAULT_GRP_CLASS IOPRIO_CLASS_BE

149
block/blk-cgroup.c
View File

@ -33,7 +33,6 @@
#include "blk-cgroup.h"
#include "blk-ioprio.h"
#include "blk-throttle.h"
#include "blk-rq-qos.h"
/*
* blkcg_pol_mutex protects blkcg_policy[] and policy [de]activation.
@ -693,69 +692,93 @@ u64 __blkg_prfill_u64(struct seq_file *sf, struct blkg_policy_data *pd, u64 v)
EXPORT_SYMBOL_GPL(__blkg_prfill_u64);
/**
* blkcg_conf_open_bdev - parse and open bdev for per-blkg config update
* @inputp: input string pointer
* blkg_conf_init - initialize a blkg_conf_ctx
* @ctx: blkg_conf_ctx to initialize
* @input: input string
*
* Parse the device node prefix part, MAJ:MIN, of per-blkg config update
* from @input and get and return the matching bdev. *@inputp is
* updated to point past the device node prefix. Returns an ERR_PTR()
* value on error.
*
* Use this function iff blkg_conf_prep() can't be used for some reason.
* Initialize @ctx which can be used to parse blkg config input string @input.
* Once initialized, @ctx can be used with blkg_conf_open_bdev() and
* blkg_conf_prep(), and must be cleaned up with blkg_conf_exit().
*/
struct block_device *blkcg_conf_open_bdev(char **inputp)
void blkg_conf_init(struct blkg_conf_ctx *ctx, char *input)
{
char *input = *inputp;
*ctx = (struct blkg_conf_ctx){ .input = input };
}
EXPORT_SYMBOL_GPL(blkg_conf_init);
/**
* blkg_conf_open_bdev - parse and open bdev for per-blkg config update
* @ctx: blkg_conf_ctx initialized with blkg_conf_init()
*
* Parse the device node prefix part, MAJ:MIN, of per-blkg config update from
* @ctx->input and get and store the matching bdev in @ctx->bdev. @ctx->body is
* set to point past the device node prefix.
*
* This function may be called multiple times on @ctx and the extra calls become
* NOOPs. blkg_conf_prep() implicitly calls this function. Use this function
* explicitly if bdev access is needed without resolving the blkcg / policy part
* of @ctx->input. Returns -errno on error.
*/
int blkg_conf_open_bdev(struct blkg_conf_ctx *ctx)
{
char *input = ctx->input;
unsigned int major, minor;
struct block_device *bdev;
int key_len;
if (ctx->bdev)
return 0;
if (sscanf(input, "%u:%u%n", &major, &minor, &key_len) != 2)
return ERR_PTR(-EINVAL);
return -EINVAL;
input += key_len;
if (!isspace(*input))
return ERR_PTR(-EINVAL);
return -EINVAL;
input = skip_spaces(input);
bdev = blkdev_get_no_open(MKDEV(major, minor));
if (!bdev)
return ERR_PTR(-ENODEV);
return -ENODEV;
if (bdev_is_partition(bdev)) {
blkdev_put_no_open(bdev);
return ERR_PTR(-ENODEV);
return -ENODEV;
}
*inputp = input;
return bdev;
ctx->body = input;
ctx->bdev = bdev;
return 0;
}
/**
* blkg_conf_prep - parse and prepare for per-blkg config update
* @blkcg: target block cgroup
* @pol: target policy
* @input: input string
* @ctx: blkg_conf_ctx to be filled
* @ctx: blkg_conf_ctx initialized with blkg_conf_init()
*
* Parse per-blkg config update from @input and initialize @ctx with the
* result. @ctx->blkg points to the blkg to be updated and @ctx->body the
* part of @input following MAJ:MIN. This function returns with RCU read
* lock and queue lock held and must be paired with blkg_conf_finish().
* Parse per-blkg config update from @ctx->input and initialize @ctx
* accordingly. On success, @ctx->body points to the part of @ctx->input
* following MAJ:MIN, @ctx->bdev points to the target block device and
* @ctx->blkg to the blkg being configured.
*
* blkg_conf_open_bdev() may be called on @ctx beforehand. On success, this
* function returns with queue lock held and must be followed by
* blkg_conf_exit().
*/
int blkg_conf_prep(struct blkcg *blkcg, const struct blkcg_policy *pol,
char *input, struct blkg_conf_ctx *ctx)
__acquires(rcu) __acquires(&bdev->bd_queue->queue_lock)
struct blkg_conf_ctx *ctx)
__acquires(&bdev->bd_queue->queue_lock)
{
struct block_device *bdev;
struct gendisk *disk;
struct request_queue *q;
struct blkcg_gq *blkg;
int ret;
bdev = blkcg_conf_open_bdev(&input);
if (IS_ERR(bdev))
return PTR_ERR(bdev);
disk = bdev->bd_disk;
ret = blkg_conf_open_bdev(ctx);
if (ret)
return ret;
disk = ctx->bdev->bd_disk;
q = disk->queue;
/*
@ -766,7 +789,6 @@ int blkg_conf_prep(struct blkcg *blkcg, const struct blkcg_policy *pol,
if (ret)
goto fail;
rcu_read_lock();
spin_lock_irq(&q->queue_lock);
if (!blkcg_policy_enabled(q, pol)) {
@ -795,7 +817,6 @@ int blkg_conf_prep(struct blkcg *blkcg, const struct blkcg_policy *pol,
/* Drop locks to do new blkg allocation with GFP_KERNEL. */
spin_unlock_irq(&q->queue_lock);
rcu_read_unlock();
new_blkg = blkg_alloc(pos, disk, GFP_KERNEL);
if (unlikely(!new_blkg)) {
@ -809,7 +830,6 @@ int blkg_conf_prep(struct blkcg *blkcg, const struct blkcg_policy *pol,
goto fail_exit_queue;
}
rcu_read_lock();
spin_lock_irq(&q->queue_lock);
if (!blkcg_policy_enabled(q, pol)) {
@ -836,20 +856,16 @@ int blkg_conf_prep(struct blkcg *blkcg, const struct blkcg_policy *pol,
}
success:
blk_queue_exit(q);
ctx->bdev = bdev;
ctx->blkg = blkg;
ctx->body = input;
return 0;
fail_preloaded:
radix_tree_preload_end();
fail_unlock:
spin_unlock_irq(&q->queue_lock);
rcu_read_unlock();
fail_exit_queue:
blk_queue_exit(q);
fail:
blkdev_put_no_open(bdev);
/*
* If queue was bypassing, we should retry. Do so after a
* short msleep(). It isn't strictly necessary but queue
@ -865,20 +881,27 @@ int blkg_conf_prep(struct blkcg *blkcg, const struct blkcg_policy *pol,
EXPORT_SYMBOL_GPL(blkg_conf_prep);
/**
* blkg_conf_finish - finish up per-blkg config update
* @ctx: blkg_conf_ctx initialized by blkg_conf_prep()
* blkg_conf_exit - clean up per-blkg config update
* @ctx: blkg_conf_ctx initialized with blkg_conf_init()
*
* Finish up after per-blkg config update. This function must be paired
* with blkg_conf_prep().
* Clean up after per-blkg config update. This function must be called on all
* blkg_conf_ctx's initialized with blkg_conf_init().
*/
void blkg_conf_finish(struct blkg_conf_ctx *ctx)
__releases(&ctx->bdev->bd_queue->queue_lock) __releases(rcu)
void blkg_conf_exit(struct blkg_conf_ctx *ctx)
__releases(&ctx->bdev->bd_queue->queue_lock)
{
spin_unlock_irq(&bdev_get_queue(ctx->bdev)->queue_lock);
rcu_read_unlock();
blkdev_put_no_open(ctx->bdev);
if (ctx->blkg) {
spin_unlock_irq(&bdev_get_queue(ctx->bdev)->queue_lock);
ctx->blkg = NULL;
}
if (ctx->bdev) {
blkdev_put_no_open(ctx->bdev);
ctx->body = NULL;
ctx->bdev = NULL;
}
}
EXPORT_SYMBOL_GPL(blkg_conf_finish);
EXPORT_SYMBOL_GPL(blkg_conf_exit);
static void blkg_iostat_set(struct blkg_iostat *dst, struct blkg_iostat *src)
{
@ -1289,8 +1312,6 @@ blkcg_css_alloc(struct cgroup_subsys_state *parent_css)
blkcg->cpd[i] = cpd;
cpd->blkcg = blkcg;
cpd->plid = i;
if (pol->cpd_init_fn)
pol->cpd_init_fn(cpd);
}
spin_lock_init(&blkcg->lock);
@ -1368,14 +1389,8 @@ int blkcg_init_disk(struct gendisk *disk)
if (ret)
goto err_ioprio_exit;
ret = blk_iolatency_init(disk);
if (ret)
goto err_throtl_exit;
return 0;
err_throtl_exit:
blk_throtl_exit(disk);
err_ioprio_exit:
blk_ioprio_exit(disk);
err_destroy_all:
@ -1391,30 +1406,9 @@ int blkcg_init_disk(struct gendisk *disk)
void blkcg_exit_disk(struct gendisk *disk)
{
blkg_destroy_all(disk);
rq_qos_exit(disk->queue);
blk_throtl_exit(disk);
}
static void blkcg_bind(struct cgroup_subsys_state *root_css)
{
int i;
mutex_lock(&blkcg_pol_mutex);
for (i = 0; i < BLKCG_MAX_POLS; i++) {
struct blkcg_policy *pol = blkcg_policy[i];
struct blkcg *blkcg;
if (!pol || !pol->cpd_bind_fn)
continue;
list_for_each_entry(blkcg, &all_blkcgs, all_blkcgs_node)
if (blkcg->cpd[pol->plid])
pol->cpd_bind_fn(blkcg->cpd[pol->plid]);
}
mutex_unlock(&blkcg_pol_mutex);
}
static void blkcg_exit(struct task_struct *tsk)
{
if (tsk->throttle_disk)
@ -1428,7 +1422,6 @@ struct cgroup_subsys io_cgrp_subsys = {
.css_offline = blkcg_css_offline,
.css_free = blkcg_css_free,
.css_rstat_flush = blkcg_rstat_flush,
.bind = blkcg_bind,
.dfl_cftypes = blkcg_files,
.legacy_cftypes = blkcg_legacy_files,
.legacy_name = "blkio",
@ -1666,8 +1659,6 @@ int blkcg_policy_register(struct blkcg_policy *pol)
blkcg->cpd[pol->plid] = cpd;
cpd->blkcg = blkcg;
cpd->plid = pol->plid;
if (pol->cpd_init_fn)
pol->cpd_init_fn(cpd);
}
}

12
block/blk-cgroup.h
View File

@ -174,9 +174,7 @@ struct blkcg_policy {
/* operations */
blkcg_pol_alloc_cpd_fn *cpd_alloc_fn;
blkcg_pol_init_cpd_fn *cpd_init_fn;
blkcg_pol_free_cpd_fn *cpd_free_fn;
blkcg_pol_bind_cpd_fn *cpd_bind_fn;
blkcg_pol_alloc_pd_fn *pd_alloc_fn;
blkcg_pol_init_pd_fn *pd_init_fn;
@ -209,15 +207,17 @@ void blkcg_print_blkgs(struct seq_file *sf, struct blkcg *blkcg,
u64 __blkg_prfill_u64(struct seq_file *sf, struct blkg_policy_data *pd, u64 v);
struct blkg_conf_ctx {
char *input;
char *body;
struct block_device *bdev;
struct blkcg_gq *blkg;
char *body;
};
struct block_device *blkcg_conf_open_bdev(char **inputp);
void blkg_conf_init(struct blkg_conf_ctx *ctx, char *input);
int blkg_conf_open_bdev(struct blkg_conf_ctx *ctx);
int blkg_conf_prep(struct blkcg *blkcg, const struct blkcg_policy *pol,
char *input, struct blkg_conf_ctx *ctx);
void blkg_conf_finish(struct blkg_conf_ctx *ctx);
struct blkg_conf_ctx *ctx);
void blkg_conf_exit(struct blkg_conf_ctx *ctx);
/**
* bio_issue_as_root_blkg - see if this bio needs to be issued as root blkg

14
block/blk-core.c
View File

@ -263,13 +263,7 @@ static void blk_free_queue_rcu(struct rcu_head *rcu_head)
static void blk_free_queue(struct request_queue *q)
{
if (q->poll_stat)
blk_stat_remove_callback(q, q->poll_cb);
blk_stat_free_callback(q->poll_cb);
blk_free_queue_stats(q->stats);
kfree(q->poll_stat);
if (queue_is_mq(q))
blk_mq_release(q);
@ -593,14 +587,14 @@ static inline blk_status_t blk_check_zone_append(struct request_queue *q,
static void __submit_bio(struct bio *bio)
{
struct gendisk *disk = bio->bi_bdev->bd_disk;
if (unlikely(!blk_crypto_bio_prep(&bio)))
return;
if (!disk->fops->submit_bio) {
if (!bio->bi_bdev->bd_has_submit_bio) {
blk_mq_submit_bio(bio);
} else if (likely(bio_queue_enter(bio) == 0)) {
struct gendisk *disk = bio->bi_bdev->bd_disk;
disk->fops->submit_bio(bio);
blk_queue_exit(disk->queue);
}
@ -704,7 +698,7 @@ void submit_bio_noacct_nocheck(struct bio *bio)
*/
if (current->bio_list)
bio_list_add(&current->bio_list[0], bio);
else if (!bio->bi_bdev->bd_disk->fops->submit_bio)
else if (!bio->bi_bdev->bd_has_submit_bio)
__submit_bio_noacct_mq(bio);
else
__submit_bio_noacct(bio);

38
block/blk-crypto-internal.h
View File

@ -65,6 +65,11 @@ static inline bool blk_crypto_rq_is_encrypted(struct request *rq)
return rq->crypt_ctx;
}
static inline bool blk_crypto_rq_has_keyslot(struct request *rq)
{
return rq->crypt_keyslot;
}
blk_status_t blk_crypto_get_keyslot(struct blk_crypto_profile *profile,
const struct blk_crypto_key *key,
struct blk_crypto_keyslot **slot_ptr);
@ -119,6 +124,11 @@ static inline bool blk_crypto_rq_is_encrypted(struct request *rq)
return false;
}
static inline bool blk_crypto_rq_has_keyslot(struct request *rq)
{
return false;
}
#endif /* CONFIG_BLK_INLINE_ENCRYPTION */
void __bio_crypt_advance(struct bio *bio, unsigned int bytes);
@ -153,14 +163,21 @@ static inline bool blk_crypto_bio_prep(struct bio **bio_ptr)
return true;
}
blk_status_t __blk_crypto_init_request(struct request *rq);
static inline blk_status_t blk_crypto_init_request(struct request *rq)
blk_status_t __blk_crypto_rq_get_keyslot(struct request *rq);
static inline blk_status_t blk_crypto_rq_get_keyslot(struct request *rq)
{
if (blk_crypto_rq_is_encrypted(rq))
return __blk_crypto_init_request(rq);
return __blk_crypto_rq_get_keyslot(rq);
return BLK_STS_OK;
}
void __blk_crypto_rq_put_keyslot(struct request *rq);
static inline void blk_crypto_rq_put_keyslot(struct request *rq)
{
if (blk_crypto_rq_has_keyslot(rq))
__blk_crypto_rq_put_keyslot(rq);
}
void __blk_crypto_free_request(struct request *rq);
static inline void blk_crypto_free_request(struct request *rq)
{
@ -188,21 +205,6 @@ static inline int blk_crypto_rq_bio_prep(struct request *rq, struct bio *bio,
return 0;
}
/**
* blk_crypto_insert_cloned_request - Prepare a cloned request to be inserted
* into a request queue.
* @rq: the request being queued
*
* Return: BLK_STS_OK on success, nonzero on error.
*/
static inline blk_status_t blk_crypto_insert_cloned_request(struct request *rq)
{
if (blk_crypto_rq_is_encrypted(rq))
return blk_crypto_init_request(rq);
return BLK_STS_OK;
}
#ifdef CONFIG_BLK_INLINE_ENCRYPTION_FALLBACK
int blk_crypto_fallback_start_using_mode(enum blk_crypto_mode_num mode_num);

60
block/blk-crypto-profile.c
View File

@ -227,14 +227,13 @@ EXPORT_SYMBOL_GPL(blk_crypto_keyslot_index);
* @profile: the crypto profile of the device the key will be used on
* @key: the key that will be used
* @slot_ptr: If a keyslot is allocated, an opaque pointer to the keyslot struct
* will be stored here; otherwise NULL will be stored here.
* will be stored here. blk_crypto_put_keyslot() must be called
* later to release it. Otherwise, NULL will be stored here.
*
* If the device has keyslots, this gets a keyslot that's been programmed with
* the specified key. If the key is already in a slot, this reuses it;
* otherwise this waits for a slot to become idle and programs the key into it.
*
* This must be paired with a call to blk_crypto_put_keyslot().
*
* Context: Process context. Takes and releases profile->lock.
* Return: BLK_STS_OK on success, meaning that either a keyslot was allocated or
* one wasn't needed; or a blk_status_t error on failure.
@ -312,20 +311,15 @@ blk_status_t blk_crypto_get_keyslot(struct blk_crypto_profile *profile,
/**
* blk_crypto_put_keyslot() - Release a reference to a keyslot
* @slot: The keyslot to release the reference of (may be NULL).
* @slot: The keyslot to release the reference of
*
* Context: Any context.
*/
void blk_crypto_put_keyslot(struct blk_crypto_keyslot *slot)
{
struct blk_crypto_profile *profile;
struct blk_crypto_profile *profile = slot->profile;
unsigned long flags;
if (!slot)
return;
profile = slot->profile;
if (atomic_dec_and_lock_irqsave(&slot->slot_refs,
&profile->idle_slots_lock, flags)) {
list_add_tail(&slot->idle_slot_node, &profile->idle_slots);
@ -354,28 +348,16 @@ bool __blk_crypto_cfg_supported(struct blk_crypto_profile *profile,
return true;
}
/**
* __blk_crypto_evict_key() - Evict a key from a device.
* @profile: the crypto profile of the device
* @key: the key to evict. It must not still be used in any I/O.
*
* If the device has keyslots, this finds the keyslot (if any) that contains the
* specified key and calls the driver's keyslot_evict function to evict it.
*
* Otherwise, this just calls the driver's keyslot_evict function if it is
* implemented, passing just the key (without any particular keyslot). This
* allows layered devices to evict the key from their underlying devices.
*
* Context: Process context. Takes and releases profile->lock.
* Return: 0 on success or if there's no keyslot with the specified key, -EBUSY
* if the keyslot is still in use, or another -errno value on other
* error.
/*
* This is an internal function that evicts a key from an inline encryption
* device that can be either a real device or the blk-crypto-fallback "device".
* It is used only by blk_crypto_evict_key(); see that function for details.
*/
int __blk_crypto_evict_key(struct blk_crypto_profile *profile,
const struct blk_crypto_key *key)
{
struct blk_crypto_keyslot *slot;
int err = 0;
int err;
if (profile->num_slots == 0) {
if (profile->ll_ops.keyslot_evict) {
@ -389,22 +371,30 @@ int __blk_crypto_evict_key(struct blk_crypto_profile *profile,
blk_crypto_hw_enter(profile);
slot = blk_crypto_find_keyslot(profile, key);
if (!slot)
goto out_unlock;
if (!slot) {
/*
* Not an error, since a key not in use by I/O is not guaranteed
* to be in a keyslot. There can be more keys than keyslots.
*/
err = 0;
goto out;
}
if (WARN_ON_ONCE(atomic_read(&slot->slot_refs) != 0)) {
/* BUG: key is still in use by I/O */
err = -EBUSY;
goto out_unlock;
goto out_remove;
}
err = profile->ll_ops.keyslot_evict(profile, key,
blk_crypto_keyslot_index(slot));
if (err)
goto out_unlock;
out_remove:
/*
* Callers free the key even on error, so unlink the key from the hash
* table and clear slot->key even on error.
*/
hlist_del(&slot->hash_node);
slot->key = NULL;
err = 0;
out_unlock:
out:
blk_crypto_hw_exit(profile);
return err;
}

66
block/blk-crypto.c
View File

@ -13,6 +13,7 @@
#include <linux/blkdev.h>
#include <linux/blk-crypto-profile.h>
#include <linux/module.h>
#include <linux/ratelimit.h>
#include <linux/slab.h>
#include "blk-crypto-internal.h"
@ -224,27 +225,27 @@ static bool bio_crypt_check_alignment(struct bio *bio)
return true;
}
blk_status_t __blk_crypto_init_request(struct request *rq)
blk_status_t __blk_crypto_rq_get_keyslot(struct request *rq)
{
return blk_crypto_get_keyslot(rq->q->crypto_profile,
rq->crypt_ctx->bc_key,
&rq->crypt_keyslot);
}
/**
* __blk_crypto_free_request - Uninitialize the crypto fields of a request.
*
* @rq: The request whose crypto fields to uninitialize.
*
* Completely uninitializes the crypto fields of a request. If a keyslot has
* been programmed into some inline encryption hardware, that keyslot is
* released. The rq->crypt_ctx is also freed.
*/
void __blk_crypto_free_request(struct request *rq)
void __blk_crypto_rq_put_keyslot(struct request *rq)
{
blk_crypto_put_keyslot(rq->crypt_keyslot);
rq->crypt_keyslot = NULL;
}
void __blk_crypto_free_request(struct request *rq)
{
/* The keyslot, if one was needed, should have been released earlier. */
if (WARN_ON_ONCE(rq->crypt_keyslot))
__blk_crypto_rq_put_keyslot(rq);
mempool_free(rq->crypt_ctx, bio_crypt_ctx_pool);
blk_crypto_rq_set_defaults(rq);
rq->crypt_ctx = NULL;
}
/**
@ -399,30 +400,39 @@ int blk_crypto_start_using_key(struct block_device *bdev,
}
/**
* blk_crypto_evict_key() - Evict a key from any inline encryption hardware
* it may have been programmed into
* @bdev: The block_device who's associated inline encryption hardware this key
* might have been programmed into
* @key: The key to evict
* blk_crypto_evict_key() - Evict a blk_crypto_key from a block_device
* @bdev: a block_device on which I/O using the key may have been done
* @key: the key to evict
*
* Upper layers (filesystems) must call this function to ensure that a key is
* evicted from any hardware that it might have been programmed into. The key
* must not be in use by any in-flight IO when this function is called.
* For a given block_device, this function removes the given blk_crypto_key from
* the keyslot management structures and evicts it from any underlying hardware
* keyslot(s) or blk-crypto-fallback keyslot it may have been programmed into.
*
* Return: 0 on success or if the key wasn't in any keyslot; -errno on error.
* Upper layers must call this before freeing the blk_crypto_key. It must be
* called for every block_device the key may have been used on. The key must no
* longer be in use by any I/O when this function is called.
*
* Context: May sleep.
*/
int blk_crypto_evict_key(struct block_device *bdev,
const struct blk_crypto_key *key)
void blk_crypto_evict_key(struct block_device *bdev,
const struct blk_crypto_key *key)
{
struct request_queue *q = bdev_get_queue(bdev);
int err;
if (blk_crypto_config_supported_natively(bdev, &key->crypto_cfg))
return __blk_crypto_evict_key(q->crypto_profile, key);
err = __blk_crypto_evict_key(q->crypto_profile, key);
else
err = blk_crypto_fallback_evict_key(key);
/*
* If the block_device didn't support the key, then blk-crypto-fallback
* may have been used, so try to evict the key from blk-crypto-fallback.
* An error can only occur here if the key failed to be evicted from a
* keyslot (due to a hardware or driver issue) or is allegedly still in
* use by I/O (due to a kernel bug). Even in these cases, the key is
* still unlinked from the keyslot management structures, and the caller
* is allowed and expected to free it right away. There's nothing
* callers can do to handle errors, so just log them and return void.
*/
return blk_crypto_fallback_evict_key(key);
if (err)
pr_warn_ratelimited("%pg: error %d evicting key\n", bdev, err);
}
EXPORT_SYMBOL_GPL(blk_crypto_evict_key);

17
block/blk-flush.c
View File

@ -68,12 +68,10 @@
#include <linux/bio.h>
#include <linux/blkdev.h>
#include <linux/gfp.h>
#include <linux/blk-mq.h>
#include <linux/part_stat.h>
#include "blk.h"
#include "blk-mq.h"
#include "blk-mq-tag.h"
#include "blk-mq-sched.h"
/* PREFLUSH/FUA sequences */
@ -138,11 +136,6 @@ static void blk_flush_restore_request(struct request *rq)
rq->end_io = rq->flush.saved_end_io;
}
static void blk_flush_queue_rq(struct request *rq, bool add_front)
{
blk_mq_add_to_requeue_list(rq, add_front, true);
}
static void blk_account_io_flush(struct request *rq)
{
struct block_device *part = rq->q->disk->part0;
@ -195,7 +188,8 @@ static void blk_flush_complete_seq(struct request *rq,
case REQ_FSEQ_DATA:
list_move_tail(&rq->flush.list, &fq->flush_data_in_flight);
blk_flush_queue_rq(rq, true);
blk_mq_add_to_requeue_list(rq, BLK_MQ_INSERT_AT_HEAD);
blk_mq_kick_requeue_list(q);
break;
case REQ_FSEQ_DONE:
@ -352,7 +346,8 @@ static void blk_kick_flush(struct request_queue *q, struct blk_flush_queue *fq,
smp_wmb();
req_ref_set(flush_rq, 1);
blk_flush_queue_rq(flush_rq, false);
blk_mq_add_to_requeue_list(flush_rq, 0);
blk_mq_kick_requeue_list(q);
}
static enum rq_end_io_ret mq_flush_data_end_io(struct request *rq,
@ -396,6 +391,7 @@ void blk_insert_flush(struct request *rq)
unsigned long fflags = q->queue_flags; /* may change, cache */
unsigned int policy = blk_flush_policy(fflags, rq);
struct blk_flush_queue *fq = blk_get_flush_queue(q, rq->mq_ctx);
struct blk_mq_hw_ctx *hctx = rq->mq_hctx;
/*
* @policy now records what operations need to be done. Adjust
@ -432,7 +428,8 @@ void blk_insert_flush(struct request *rq)
*/
if ((policy & REQ_FSEQ_DATA) &&
!(policy & (REQ_FSEQ_PREFLUSH | REQ_FSEQ_POSTFLUSH))) {
blk_mq_request_bypass_insert(rq, false, true);
blk_mq_request_bypass_insert(rq, 0);
blk_mq_run_hw_queue(hctx, false);
return;
}

58
block/blk-iocost.c
View File

@ -3106,9 +3106,11 @@ static ssize_t ioc_weight_write(struct kernfs_open_file *of, char *buf,
return nbytes;
}
ret = blkg_conf_prep(blkcg, &blkcg_policy_iocost, buf, &ctx);
blkg_conf_init(&ctx, buf);
ret = blkg_conf_prep(blkcg, &blkcg_policy_iocost, &ctx);
if (ret)
return ret;
goto err;
iocg = blkg_to_iocg(ctx.blkg);
@ -3127,12 +3129,14 @@ static ssize_t ioc_weight_write(struct kernfs_open_file *of, char *buf,
weight_updated(iocg, &now);
spin_unlock(&iocg->ioc->lock);
blkg_conf_finish(&ctx);
blkg_conf_exit(&ctx);
return nbytes;
einval:
blkg_conf_finish(&ctx);
return -EINVAL;
ret = -EINVAL;
err:
blkg_conf_exit(&ctx);
return ret;
}
static u64 ioc_qos_prfill(struct seq_file *sf, struct blkg_policy_data *pd,
@ -3189,19 +3193,22 @@ static const match_table_t qos_tokens = {
static ssize_t ioc_qos_write(struct kernfs_open_file *of, char *input,
size_t nbytes, loff_t off)
{
struct block_device *bdev;
struct blkg_conf_ctx ctx;
struct gendisk *disk;
struct ioc *ioc;
u32 qos[NR_QOS_PARAMS];
bool enable, user;
char *p;
char *body, *p;
int ret;
bdev = blkcg_conf_open_bdev(&input);
if (IS_ERR(bdev))
return PTR_ERR(bdev);
blkg_conf_init(&ctx, input);
disk = bdev->bd_disk;
ret = blkg_conf_open_bdev(&ctx);
if (ret)
goto err;
body = ctx.body;
disk = ctx.bdev->bd_disk;
if (!queue_is_mq(disk->queue)) {
ret = -EOPNOTSUPP;
goto err;
@ -3223,7 +3230,7 @@ static ssize_t ioc_qos_write(struct kernfs_open_file *of, char *input,
enable = ioc->enabled;
user = ioc->user_qos_params;
while ((p = strsep(&input, " \t\n"))) {
while ((p = strsep(&body, " \t\n"))) {
substring_t args[MAX_OPT_ARGS];
char buf[32];
int tok;
@ -3313,7 +3320,7 @@ static ssize_t ioc_qos_write(struct kernfs_open_file *of, char *input,
blk_mq_unquiesce_queue(disk->queue);
blk_mq_unfreeze_queue(disk->queue);
blkdev_put_no_open(bdev);
blkg_conf_exit(&ctx);
return nbytes;
einval:
spin_unlock_irq(&ioc->lock);
@ -3323,7 +3330,7 @@ static ssize_t ioc_qos_write(struct kernfs_open_file *of, char *input,
ret = -EINVAL;
err:
blkdev_put_no_open(bdev);
blkg_conf_exit(&ctx);
return ret;
}
@ -3376,19 +3383,22 @@ static const match_table_t i_lcoef_tokens = {
static ssize_t ioc_cost_model_write(struct kernfs_open_file *of, char *input,
size_t nbytes, loff_t off)
{
struct block_device *bdev;
struct blkg_conf_ctx ctx;
struct request_queue *q;
struct ioc *ioc;
u64 u[NR_I_LCOEFS];
bool user;
char *p;
char *body, *p;
int ret;
bdev = blkcg_conf_open_bdev(&input);
if (IS_ERR(bdev))
return PTR_ERR(bdev);
blkg_conf_init(&ctx, input);
q = bdev_get_queue(bdev);
ret = blkg_conf_open_bdev(&ctx);
if (ret)
goto err;
body = ctx.body;
q = bdev_get_queue(ctx.bdev);
if (!queue_is_mq(q)) {
ret = -EOPNOTSUPP;
goto err;
@ -3396,7 +3406,7 @@ static ssize_t ioc_cost_model_write(struct kernfs_open_file *of, char *input,
ioc = q_to_ioc(q);
if (!ioc) {
ret = blk_iocost_init(bdev->bd_disk);
ret = blk_iocost_init(ctx.bdev->bd_disk);
if (ret)
goto err;
ioc = q_to_ioc(q);
@ -3409,7 +3419,7 @@ static ssize_t ioc_cost_model_write(struct kernfs_open_file *of, char *input,
memcpy(u, ioc->params.i_lcoefs, sizeof(u));
user = ioc->user_cost_model;
while ((p = strsep(&input, " \t\n"))) {
while ((p = strsep(&body, " \t\n"))) {
substring_t args[MAX_OPT_ARGS];
char buf[32];
int tok;
@ -3456,7 +3466,7 @@ static ssize_t ioc_cost_model_write(struct kernfs_open_file *of, char *input,
blk_mq_unquiesce_queue(q);
blk_mq_unfreeze_queue(q);
blkdev_put_no_open(bdev);
blkg_conf_exit(&ctx);
return nbytes;
einval:
@ -3467,7 +3477,7 @@ static ssize_t ioc_cost_model_write(struct kernfs_open_file *of, char *input,
ret = -EINVAL;
err:
blkdev_put_no_open(bdev);
blkg_conf_exit(&ctx);
return ret;
}

39
block/blk-iolatency.c
View File

@ -755,7 +755,7 @@ static void blkiolatency_enable_work_fn(struct work_struct *work)
}
}
int blk_iolatency_init(struct gendisk *disk)
static int blk_iolatency_init(struct gendisk *disk)
{
struct blk_iolatency *blkiolat;
int ret;
@ -824,6 +824,29 @@ static void iolatency_clear_scaling(struct blkcg_gq *blkg)
}
}
static int blk_iolatency_try_init(struct blkg_conf_ctx *ctx)
{
static DEFINE_MUTEX(init_mutex);
int ret;
ret = blkg_conf_open_bdev(ctx);
if (ret)
return ret;
/*
* blk_iolatency_init() may fail after rq_qos_add() succeeds which can
* confuse iolat_rq_qos() test. Make the test and init atomic.
*/
mutex_lock(&init_mutex);
if (!iolat_rq_qos(ctx->bdev->bd_queue))
ret = blk_iolatency_init(ctx->bdev->bd_disk);
mutex_unlock(&init_mutex);
return ret;
}
static ssize_t iolatency_set_limit(struct kernfs_open_file *of, char *buf,
size_t nbytes, loff_t off)
{
@ -836,9 +859,15 @@ static ssize_t iolatency_set_limit(struct kernfs_open_file *of, char *buf,
u64 oldval;
int ret;
ret = blkg_conf_prep(blkcg, &blkcg_policy_iolatency, buf, &ctx);
blkg_conf_init(&ctx, buf);
ret = blk_iolatency_try_init(&ctx);
if (ret)
return ret;
goto out;
ret = blkg_conf_prep(blkcg, &blkcg_policy_iolatency, &ctx);
if (ret)
goto out;
iolat = blkg_to_lat(ctx.blkg);
p = ctx.body;
@ -874,7 +903,7 @@ static ssize_t iolatency_set_limit(struct kernfs_open_file *of, char *buf,
iolatency_clear_scaling(blkg);
ret = 0;
out:
blkg_conf_finish(&ctx);
blkg_conf_exit(&ctx);
return ret ?: nbytes;
}
@ -967,7 +996,7 @@ static void iolatency_pd_init(struct blkg_policy_data *pd)
{
struct iolatency_grp *iolat = pd_to_lat(pd);
struct blkcg_gq *blkg = lat_to_blkg(iolat);
struct rq_qos *rqos = blkcg_rq_qos(blkg->q);
struct rq_qos *rqos = iolat_rq_qos(blkg->q);
struct blk_iolatency *blkiolat = BLKIOLATENCY(rqos);
u64 now = ktime_to_ns(ktime_get());
int cpu;

2
block/blk-merge.c
View File

@ -867,6 +867,8 @@ static struct request *attempt_merge(struct request_queue *q,
if (!blk_discard_mergable(req))
elv_merge_requests(q, req, next);
blk_crypto_rq_put_keyslot(next);
/*
* 'next' is going away, so update stats accordingly
*/

1
block/blk-mq-cpumap.c
View File

@ -12,7 +12,6 @@
#include <linux/cpu.h>
#include <linux/group_cpus.h>
#include <linux/blk-mq.h>
#include "blk.h"
#include "blk-mq.h"

28
block/blk-mq-debugfs.c
View File

@ -7,41 +7,14 @@
#include <linux/blkdev.h>
#include <linux/debugfs.h>
#include <linux/blk-mq.h>
#include "blk.h"
#include "blk-mq.h"
#include "blk-mq-debugfs.h"
#include "blk-mq-sched.h"
#include "blk-mq-tag.h"
#include "blk-rq-qos.h"
static void print_stat(struct seq_file *m, struct blk_rq_stat *stat)
{
if (stat->nr_samples) {
seq_printf(m, "samples=%d, mean=%llu, min=%llu, max=%llu",
stat->nr_samples, stat->mean, stat->min, stat->max);
} else {
seq_puts(m, "samples=0");
}
}
static int queue_poll_stat_show(void *data, struct seq_file *m)
{
struct request_queue *q = data;
int bucket;
if (!q->poll_stat)
return 0;
for (bucket = 0; bucket < (BLK_MQ_POLL_STATS_BKTS / 2); bucket++) {
seq_printf(m, "read (%d Bytes): ", 1 << (9 + bucket));
print_stat(m, &q->poll_stat[2 * bucket]);
seq_puts(m, "\n");
seq_printf(m, "write (%d Bytes): ", 1 << (9 + bucket));
print_stat(m, &q->poll_stat[2 * bucket + 1]);
seq_puts(m, "\n");
}
return 0;
}
@ -282,7 +255,6 @@ static const char *const rqf_name[] = {
RQF_NAME(STATS),
RQF_NAME(SPECIAL_PAYLOAD),
RQF_NAME(ZONE_WRITE_LOCKED),
RQF_NAME(MQ_POLL_SLEPT),
RQF_NAME(TIMED_OUT),
RQF_NAME(ELV),
RQF_NAME(RESV),

1
block/blk-mq-pci.c
View File

@ -4,7 +4,6 @@
*/
#include <linux/kobject.h>
#include <linux/blkdev.h>
#include <linux/blk-mq.h>
#include <linux/blk-mq-pci.h>
#include <linux/pci.h>
#include <linux/module.h>

44
block/blk-mq-rdma.c
View File

@ -1,44 +0,0 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2017 Sagi Grimberg.
*/
#include <linux/blk-mq.h>
#include <linux/blk-mq-rdma.h>
#include <rdma/ib_verbs.h>
/**
* blk_mq_rdma_map_queues - provide a default queue mapping for rdma device
* @map: CPU to hardware queue map.
* @dev: rdma device to provide a mapping for.
* @first_vec: first interrupt vectors to use for queues (usually 0)
*
* This function assumes the rdma device @dev has at least as many available
* interrupt vetors as @set has queues. It will then query it's affinity mask
* and built queue mapping that maps a queue to the CPUs that have irq affinity
* for the corresponding vector.
*
* In case either the driver passed a @dev with less vectors than
* @set->nr_hw_queues, or @dev does not provide an affinity mask for a
* vector, we fallback to the naive mapping.
*/
void blk_mq_rdma_map_queues(struct blk_mq_queue_map *map,
struct ib_device *dev, int first_vec)
{
const struct cpumask *mask;
unsigned int queue, cpu;
for (queue = 0; queue < map->nr_queues; queue++) {
mask = ib_get_vector_affinity(dev, first_vec + queue);
if (!mask)
goto fallback;
for_each_cpu(cpu, mask)
map->mq_map[cpu] = map->queue_offset + queue;
}
return;
fallback:
blk_mq_map_queues(map);
}
EXPORT_SYMBOL_GPL(blk_mq_rdma_map_queues);

143
block/blk-mq-sched.c
View File

@ -6,7 +6,6 @@
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/blk-mq.h>
#include <linux/list_sort.h>
#include <trace/events/block.h>
@ -15,7 +14,6 @@
#include "blk-mq.h"
#include "blk-mq-debugfs.h"
#include "blk-mq-sched.h"
#include "blk-mq-tag.h"
#include "blk-wbt.h"
/*
@ -271,9 +269,7 @@ static int blk_mq_do_dispatch_ctx(struct blk_mq_hw_ctx *hctx)
static int __blk_mq_sched_dispatch_requests(struct blk_mq_hw_ctx *hctx)
{
struct request_queue *q = hctx->queue;
const bool has_sched = q->elevator;
int ret = 0;
bool need_dispatch = false;
LIST_HEAD(rq_list);
/*
@ -302,23 +298,22 @@ static int __blk_mq_sched_dispatch_requests(struct blk_mq_hw_ctx *hctx)
*/
if (!list_empty(&rq_list)) {
blk_mq_sched_mark_restart_hctx(hctx);
if (blk_mq_dispatch_rq_list(hctx, &rq_list, 0)) {
if (has_sched)
ret = blk_mq_do_dispatch_sched(hctx);
else
ret = blk_mq_do_dispatch_ctx(hctx);
}
} else if (has_sched) {
ret = blk_mq_do_dispatch_sched(hctx);
} else if (hctx->dispatch_busy) {
/* dequeue request one by one from sw queue if queue is busy */
ret = blk_mq_do_dispatch_ctx(hctx);
if (!blk_mq_dispatch_rq_list(hctx, &rq_list, 0))
return 0;
need_dispatch = true;
} else {
blk_mq_flush_busy_ctxs(hctx, &rq_list);
blk_mq_dispatch_rq_list(hctx, &rq_list, 0);
need_dispatch = hctx->dispatch_busy;
}
return ret;
if (hctx->queue->elevator)
return blk_mq_do_dispatch_sched(hctx);
/* dequeue request one by one from sw queue if queue is busy */
if (need_dispatch)
return blk_mq_do_dispatch_ctx(hctx);
blk_mq_flush_busy_ctxs(hctx, &rq_list);
blk_mq_dispatch_rq_list(hctx, &rq_list, 0);
return 0;
}
void blk_mq_sched_dispatch_requests(struct blk_mq_hw_ctx *hctx)
@ -384,116 +379,6 @@ bool blk_mq_sched_try_insert_merge(struct request_queue *q, struct request *rq,
}
EXPORT_SYMBOL_GPL(blk_mq_sched_try_insert_merge);
static bool blk_mq_sched_bypass_insert(struct blk_mq_hw_ctx *hctx,
struct request *rq)
{
/*
* dispatch flush and passthrough rq directly
*
* passthrough request has to be added to hctx->dispatch directly.
* For some reason, device may be in one situation which can't
* handle FS request, so STS_RESOURCE is always returned and the
* FS request will be added to hctx->dispatch. However passthrough
* request may be required at that time for fixing the problem. If
* passthrough request is added to scheduler queue, there isn't any
* chance to dispatch it given we prioritize requests in hctx->dispatch.
*/
if ((rq->rq_flags & RQF_FLUSH_SEQ) || blk_rq_is_passthrough(rq))
return true;
return false;
}
void blk_mq_sched_insert_request(struct request *rq, bool at_head,
bool run_queue, bool async)
{
struct request_queue *q = rq->q;
struct elevator_queue *e = q->elevator;
struct blk_mq_ctx *ctx = rq->mq_ctx;
struct blk_mq_hw_ctx *hctx = rq->mq_hctx;
WARN_ON(e && (rq->tag != BLK_MQ_NO_TAG));
if (blk_mq_sched_bypass_insert(hctx, rq)) {
/*
* Firstly normal IO request is inserted to scheduler queue or
* sw queue, meantime we add flush request to dispatch queue(
* hctx->dispatch) directly and there is at most one in-flight
* flush request for each hw queue, so it doesn't matter to add
* flush request to tail or front of the dispatch queue.
*
* Secondly in case of NCQ, flush request belongs to non-NCQ
* command, and queueing it will fail when there is any
* in-flight normal IO request(NCQ command). When adding flush
* rq to the front of hctx->dispatch, it is easier to introduce
* extra time to flush rq's latency because of S_SCHED_RESTART
* compared with adding to the tail of dispatch queue, then
* chance of flush merge is increased, and less flush requests
* will be issued to controller. It is observed that ~10% time
* is saved in blktests block/004 on disk attached to AHCI/NCQ
* drive when adding flush rq to the front of hctx->dispatch.
*
* Simply queue flush rq to the front of hctx->dispatch so that
* intensive flush workloads can benefit in case of NCQ HW.
*/
at_head = (rq->rq_flags & RQF_FLUSH_SEQ) ? true : at_head;
blk_mq_request_bypass_insert(rq, at_head, false);
goto run;
}
if (e) {
LIST_HEAD(list);
list_add(&rq->queuelist, &list);
e->type->ops.insert_requests(hctx, &list, at_head);
} else {
spin_lock(&ctx->lock);
__blk_mq_insert_request(hctx, rq, at_head);
spin_unlock(&ctx->lock);
}
run:
if (run_queue)
blk_mq_run_hw_queue(hctx, async);
}
void blk_mq_sched_insert_requests(struct blk_mq_hw_ctx *hctx,
struct blk_mq_ctx *ctx,
struct list_head *list, bool run_queue_async)
{
struct elevator_queue *e;
struct request_queue *q = hctx->queue;
/*
* blk_mq_sched_insert_requests() is called from flush plug
* context only, and hold one usage counter to prevent queue
* from being released.
*/
percpu_ref_get(&q->q_usage_counter);
e = hctx->queue->elevator;
if (e) {
e->type->ops.insert_requests(hctx, list, false);
} else {
/*
* try to issue requests directly if the hw queue isn't
* busy in case of 'none' scheduler, and this way may save
* us one extra enqueue & dequeue to sw queue.
*/
if (!hctx->dispatch_busy && !run_queue_async) {
blk_mq_run_dispatch_ops(hctx->queue,
blk_mq_try_issue_list_directly(hctx, list));
if (list_empty(list))
goto out;
}
blk_mq_insert_requests(hctx, ctx, list);
}
blk_mq_run_hw_queue(hctx, run_queue_async);
out:
percpu_ref_put(&q->q_usage_counter);
}
static int blk_mq_sched_alloc_map_and_rqs(struct request_queue *q,
struct blk_mq_hw_ctx *hctx,
unsigned int hctx_idx)

7
block/blk-mq-sched.h
View File

@ -4,7 +4,6 @@
#include "elevator.h"
#include "blk-mq.h"
#include "blk-mq-tag.h"
#define MAX_SCHED_RQ (16 * BLKDEV_DEFAULT_RQ)
@ -17,12 +16,6 @@ bool blk_mq_sched_try_insert_merge(struct request_queue *q, struct request *rq,
void blk_mq_sched_mark_restart_hctx(struct blk_mq_hw_ctx *hctx);
void __blk_mq_sched_restart(struct blk_mq_hw_ctx *hctx);
void blk_mq_sched_insert_request(struct request *rq, bool at_head,
bool run_queue, bool async);
void blk_mq_sched_insert_requests(struct blk_mq_hw_ctx *hctx,
struct blk_mq_ctx *ctx,
struct list_head *list, bool run_queue_async);
void blk_mq_sched_dispatch_requests(struct blk_mq_hw_ctx *hctx);
int blk_mq_init_sched(struct request_queue *q, struct elevator_type *e);

2
block/blk-mq-sysfs.c
View File

@ -10,10 +10,8 @@
#include <linux/workqueue.h>
#include <linux/smp.h>
#include <linux/blk-mq.h>
#include "blk.h"
#include "blk-mq.h"
#include "blk-mq-tag.h"
static void blk_mq_sysfs_release(struct kobject *kobj)
{

2
block/blk-mq-tag.c
View File

@ -9,12 +9,10 @@
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/blk-mq.h>
#include <linux/delay.h>
#include "blk.h"
#include "blk-mq.h"
#include "blk-mq-sched.h"
#include "blk-mq-tag.h"
/*
* Recalculate wakeup batch when tag is shared by hctx.

73
block/blk-mq-tag.h
View File

@ -1,73 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef INT_BLK_MQ_TAG_H
#define INT_BLK_MQ_TAG_H
struct blk_mq_alloc_data;
extern struct blk_mq_tags *blk_mq_init_tags(unsigned int nr_tags,
unsigned int reserved_tags,
int node, int alloc_policy);
extern void blk_mq_free_tags(struct blk_mq_tags *tags);
extern int blk_mq_init_bitmaps(struct sbitmap_queue *bitmap_tags,
struct sbitmap_queue *breserved_tags,
unsigned int queue_depth,
unsigned int reserved,
int node, int alloc_policy);
extern unsigned int blk_mq_get_tag(struct blk_mq_alloc_data *data);
unsigned long blk_mq_get_tags(struct blk_mq_alloc_data *data, int nr_tags,
unsigned int *offset);
extern void blk_mq_put_tag(struct blk_mq_tags *tags, struct blk_mq_ctx *ctx,
unsigned int tag);
void blk_mq_put_tags(struct blk_mq_tags *tags, int *tag_array, int nr_tags);
extern int blk_mq_tag_update_depth(struct blk_mq_hw_ctx *hctx,
struct blk_mq_tags **tags,
unsigned int depth, bool can_grow);
extern void blk_mq_tag_resize_shared_tags(struct blk_mq_tag_set *set,
unsigned int size);
extern void blk_mq_tag_update_sched_shared_tags(struct request_queue *q);
extern void blk_mq_tag_wakeup_all(struct blk_mq_tags *tags, bool);
void blk_mq_queue_tag_busy_iter(struct request_queue *q, busy_tag_iter_fn *fn,
void *priv);
void blk_mq_all_tag_iter(struct blk_mq_tags *tags, busy_tag_iter_fn *fn,
void *priv);
static inline struct sbq_wait_state *bt_wait_ptr(struct sbitmap_queue *bt,
struct blk_mq_hw_ctx *hctx)
{
if (!hctx)
return &bt->ws[0];
return sbq_wait_ptr(bt, &hctx->wait_index);
}
enum {
BLK_MQ_NO_TAG = -1U,
BLK_MQ_TAG_MIN = 1,
BLK_MQ_TAG_MAX = BLK_MQ_NO_TAG - 1,
};
extern void __blk_mq_tag_busy(struct blk_mq_hw_ctx *);
extern void __blk_mq_tag_idle(struct blk_mq_hw_ctx *);
static inline void blk_mq_tag_busy(struct blk_mq_hw_ctx *hctx)
{
if (hctx->flags & BLK_MQ_F_TAG_QUEUE_SHARED)
__blk_mq_tag_busy(hctx);
}
static inline void blk_mq_tag_idle(struct blk_mq_hw_ctx *hctx)
{
if (!(hctx->flags & BLK_MQ_F_TAG_QUEUE_SHARED))
return;
__blk_mq_tag_idle(hctx);
}
static inline bool blk_mq_tag_is_reserved(struct blk_mq_tags *tags,
unsigned int tag)
{
return tag < tags->nr_reserved_tags;
}
#endif

1
block/blk-mq-virtio.c
View File

@ -3,7 +3,6 @@
* Copyright (c) 2016 Christoph Hellwig.
*/
#include <linux/device.h>
#include <linux/blk-mq.h>
#include <linux/blk-mq-virtio.h>
#include <linux/virtio_config.h>
#include <linux/module.h>

667
block/blk-mq.c
View File

@ -32,12 +32,10 @@
#include <trace/events/block.h>
#include <linux/blk-mq.h>
#include <linux/t10-pi.h>
#include "blk.h"
#include "blk-mq.h"
#include "blk-mq-debugfs.h"
#include "blk-mq-tag.h"
#include "blk-pm.h"
#include "blk-stat.h"
#include "blk-mq-sched.h"
@ -46,51 +44,19 @@
static DEFINE_PER_CPU(struct llist_head, blk_cpu_done);
static void blk_mq_poll_stats_start(struct request_queue *q);
static void blk_mq_poll_stats_fn(struct blk_stat_callback *cb);
static int blk_mq_poll_stats_bkt(const struct request *rq)
{
int ddir, sectors, bucket;
ddir = rq_data_dir(rq);
sectors = blk_rq_stats_sectors(rq);
bucket = ddir + 2 * ilog2(sectors);
if (bucket < 0)
return -1;
else if (bucket >= BLK_MQ_POLL_STATS_BKTS)
return ddir + BLK_MQ_POLL_STATS_BKTS - 2;
return bucket;
}
#define BLK_QC_T_SHIFT 16
#define BLK_QC_T_INTERNAL (1U << 31)
static void blk_mq_insert_request(struct request *rq, blk_insert_t flags);
static void blk_mq_try_issue_list_directly(struct blk_mq_hw_ctx *hctx,
struct list_head *list);
static inline struct blk_mq_hw_ctx *blk_qc_to_hctx(struct request_queue *q,
blk_qc_t qc)
{
return xa_load(&q->hctx_table,
(qc & ~BLK_QC_T_INTERNAL) >> BLK_QC_T_SHIFT);
}
static inline struct request *blk_qc_to_rq(struct blk_mq_hw_ctx *hctx,
blk_qc_t qc)
{
unsigned int tag = qc & ((1U << BLK_QC_T_SHIFT) - 1);
if (qc & BLK_QC_T_INTERNAL)
return blk_mq_tag_to_rq(hctx->sched_tags, tag);
return blk_mq_tag_to_rq(hctx->tags, tag);
return xa_load(&q->hctx_table, qc);
}
static inline blk_qc_t blk_rq_to_qc(struct request *rq)
{
return (rq->mq_hctx->queue_num << BLK_QC_T_SHIFT) |
(rq->tag != -1 ?
rq->tag : (rq->internal_tag | BLK_QC_T_INTERNAL));
return rq->mq_hctx->queue_num;
}
/*
@ -840,6 +806,12 @@ static void blk_complete_request(struct request *req)
req->q->integrity.profile->complete_fn(req, total_bytes);
#endif
/*
* Upper layers may call blk_crypto_evict_key() anytime after the last
* bio_endio(). Therefore, the keyslot must be released before that.
*/
blk_crypto_rq_put_keyslot(req);
blk_account_io_completion(req, total_bytes);
do {
@ -905,6 +877,13 @@ bool blk_update_request(struct request *req, blk_status_t error,
req->q->integrity.profile->complete_fn(req, nr_bytes);
#endif
/*
* Upper layers may call blk_crypto_evict_key() anytime after the last
* bio_endio(). Therefore, the keyslot must be released before that.
*/
if (blk_crypto_rq_has_keyslot(req) && nr_bytes >= blk_rq_bytes(req))
__blk_crypto_rq_put_keyslot(req);
if (unlikely(error && !blk_rq_is_passthrough(req) &&
!(req->rq_flags & RQF_QUIET)) &&
!test_bit(GD_DEAD, &req->q->disk->state)) {
@ -976,17 +955,6 @@ bool blk_update_request(struct request *req, blk_status_t error,
}
EXPORT_SYMBOL_GPL(blk_update_request);
static void __blk_account_io_done(struct request *req, u64 now)
{
const int sgrp = op_stat_group(req_op(req));
part_stat_lock();
update_io_ticks(req->part, jiffies, true);
part_stat_inc(req->part, ios[sgrp]);
part_stat_add(req->part, nsecs[sgrp], now - req->start_time_ns);
part_stat_unlock();
}
static inline void blk_account_io_done(struct request *req, u64 now)
{
/*
@ -995,40 +963,41 @@ static inline void blk_account_io_done(struct request *req, u64 now)
* containing request is enough.
*/
if (blk_do_io_stat(req) && req->part &&
!(req->rq_flags & RQF_FLUSH_SEQ))
__blk_account_io_done(req, now);
}
!(req->rq_flags & RQF_FLUSH_SEQ)) {
const int sgrp = op_stat_group(req_op(req));
static void __blk_account_io_start(struct request *rq)
{
/*
* All non-passthrough requests are created from a bio with one
* exception: when a flush command that is part of a flush sequence
* generated by the state machine in blk-flush.c is cloned onto the
* lower device by dm-multipath we can get here without a bio.
*/
if (rq->bio)
rq->part = rq->bio->bi_bdev;
else
rq->part = rq->q->disk->part0;
part_stat_lock();
update_io_ticks(rq->part, jiffies, false);
part_stat_unlock();
part_stat_lock();
update_io_ticks(req->part, jiffies, true);
part_stat_inc(req->part, ios[sgrp]);
part_stat_add(req->part, nsecs[sgrp], now - req->start_time_ns);
part_stat_unlock();
}
}
static inline void blk_account_io_start(struct request *req)
{
if (blk_do_io_stat(req))
__blk_account_io_start(req);
if (blk_do_io_stat(req)) {
/*
* All non-passthrough requests are created from a bio with one
* exception: when a flush command that is part of a flush sequence
* generated by the state machine in blk-flush.c is cloned onto the
* lower device by dm-multipath we can get here without a bio.
*/
if (req->bio)
req->part = req->bio->bi_bdev;
else
req->part = req->q->disk->part0;
part_stat_lock();
update_io_ticks(req->part, jiffies, false);
part_stat_unlock();
}
}
static inline void __blk_mq_end_request_acct(struct request *rq, u64 now)
{
if (rq->rq_flags & RQF_STATS) {
blk_mq_poll_stats_start(rq->q);
if (rq->rq_flags & RQF_STATS)
blk_stat_add(rq, now);
}
blk_mq_sched_completed_request(rq, now);
blk_account_io_done(rq, now);
@ -1322,6 +1291,8 @@ static void blk_add_rq_to_plug(struct blk_plug *plug, struct request *rq)
*/
void blk_execute_rq_nowait(struct request *rq, bool at_head)
{
struct blk_mq_hw_ctx *hctx = rq->mq_hctx;
WARN_ON(irqs_disabled());
WARN_ON(!blk_rq_is_passthrough(rq));
@ -1332,10 +1303,13 @@ void blk_execute_rq_nowait(struct request *rq, bool at_head)
* device, directly accessing the plug instead of using blk_mq_plug()
* should not have any consequences.
*/
if (current->plug)
if (current->plug && !at_head) {
blk_add_rq_to_plug(current->plug, rq);
else
blk_mq_sched_insert_request(rq, at_head, true, false);
return;
}
blk_mq_insert_request(rq, at_head ? BLK_MQ_INSERT_AT_HEAD : 0);
blk_mq_run_hw_queue(hctx, false);
}
EXPORT_SYMBOL_GPL(blk_execute_rq_nowait);
@ -1383,6 +1357,7 @@ static void blk_rq_poll_completion(struct request *rq, struct completion *wait)
*/
blk_status_t blk_execute_rq(struct request *rq, bool at_head)
{
struct blk_mq_hw_ctx *hctx = rq->mq_hctx;
struct blk_rq_wait wait = {
.done = COMPLETION_INITIALIZER_ONSTACK(wait.done),
};
@ -1394,7 +1369,8 @@ blk_status_t blk_execute_rq(struct request *rq, bool at_head)
rq->end_io = blk_end_sync_rq;
blk_account_io_start(rq);
blk_mq_sched_insert_request(rq, at_head, true, false);
blk_mq_insert_request(rq, at_head ? BLK_MQ_INSERT_AT_HEAD : 0);
blk_mq_run_hw_queue(hctx, false);
if (blk_rq_is_poll(rq)) {
blk_rq_poll_completion(rq, &wait.done);
@ -1434,12 +1410,17 @@ static void __blk_mq_requeue_request(struct request *rq)
void blk_mq_requeue_request(struct request *rq, bool kick_requeue_list)
{
struct request_queue *q = rq->q;
__blk_mq_requeue_request(rq);
/* this request will be re-inserted to io scheduler queue */
blk_mq_sched_requeue_request(rq);
blk_mq_add_to_requeue_list(rq, true, kick_requeue_list);
blk_mq_add_to_requeue_list(rq, BLK_MQ_INSERT_AT_HEAD);
if (kick_requeue_list)
blk_mq_kick_requeue_list(q);
}
EXPORT_SYMBOL(blk_mq_requeue_request);
@ -1455,33 +1436,33 @@ static void blk_mq_requeue_work(struct work_struct *work)
spin_unlock_irq(&q->requeue_lock);
list_for_each_entry_safe(rq, next, &rq_list, queuelist) {
if (!(rq->rq_flags & (RQF_SOFTBARRIER | RQF_DONTPREP)))
continue;
rq->rq_flags &= ~RQF_SOFTBARRIER;
list_del_init(&rq->queuelist);
/*
* If RQF_DONTPREP, rq has contained some driver specific
* data, so insert it to hctx dispatch list to avoid any
* merge.
* If RQF_DONTPREP ist set, the request has been started by the
* driver already and might have driver-specific data allocated
* already. Insert it into the hctx dispatch list to avoid
* block layer merges for the request.
*/
if (rq->rq_flags & RQF_DONTPREP)
blk_mq_request_bypass_insert(rq, false, false);
else
blk_mq_sched_insert_request(rq, true, false, false);
if (rq->rq_flags & RQF_DONTPREP) {
rq->rq_flags &= ~RQF_SOFTBARRIER;
list_del_init(&rq->queuelist);
blk_mq_request_bypass_insert(rq, 0);
} else if (rq->rq_flags & RQF_SOFTBARRIER) {
rq->rq_flags &= ~RQF_SOFTBARRIER;
list_del_init(&rq->queuelist);
blk_mq_insert_request(rq, BLK_MQ_INSERT_AT_HEAD);
}
}
while (!list_empty(&rq_list)) {
rq = list_entry(rq_list.next, struct request, queuelist);
list_del_init(&rq->queuelist);
blk_mq_sched_insert_request(rq, false, false, false);
blk_mq_insert_request(rq, 0);
}
blk_mq_run_hw_queues(q, false);
}
void blk_mq_add_to_requeue_list(struct request *rq, bool at_head,
bool kick_requeue_list)
void blk_mq_add_to_requeue_list(struct request *rq, blk_insert_t insert_flags)
{
struct request_queue *q = rq->q;
unsigned long flags;
@ -1493,16 +1474,13 @@ void blk_mq_add_to_requeue_list(struct request *rq, bool at_head,
BUG_ON(rq->rq_flags & RQF_SOFTBARRIER);
spin_lock_irqsave(&q->requeue_lock, flags);
if (at_head) {
if (insert_flags & BLK_MQ_INSERT_AT_HEAD) {
rq->rq_flags |= RQF_SOFTBARRIER;
list_add(&rq->queuelist, &q->requeue_list);
} else {
list_add_tail(&rq->queuelist, &q->requeue_list);
}
spin_unlock_irqrestore(&q->requeue_lock, flags);
if (kick_requeue_list)
blk_mq_kick_requeue_list(q);
}
void blk_mq_kick_requeue_list(struct request_queue *q)
@ -2158,24 +2136,6 @@ bool blk_mq_dispatch_rq_list(struct blk_mq_hw_ctx *hctx, struct list_head *list,
return true;
}
/**
* __blk_mq_run_hw_queue - Run a hardware queue.
* @hctx: Pointer to the hardware queue to run.
*
* Send pending requests to the hardware.
*/
static void __blk_mq_run_hw_queue(struct blk_mq_hw_ctx *hctx)
{
/*
* We can't run the queue inline with ints disabled. Ensure that
* we catch bad users of this early.
*/
WARN_ON_ONCE(in_interrupt());
blk_mq_run_dispatch_ops(hctx->queue,
blk_mq_sched_dispatch_requests(hctx));
}
static inline int blk_mq_first_mapped_cpu(struct blk_mq_hw_ctx *hctx)
{
int cpu = cpumask_first_and(hctx->cpumask, cpu_online_mask);
@ -2231,32 +2191,6 @@ static int blk_mq_hctx_next_cpu(struct blk_mq_hw_ctx *hctx)
return next_cpu;
}
/**
* __blk_mq_delay_run_hw_queue - Run (or schedule to run) a hardware queue.
* @hctx: Pointer to the hardware queue to run.
* @async: If we want to run the queue asynchronously.
* @msecs: Milliseconds of delay to wait before running the queue.
*
* If !@async, try to run the queue now. Else, run the queue asynchronously and
* with a delay of @msecs.
*/
static void __blk_mq_delay_run_hw_queue(struct blk_mq_hw_ctx *hctx, bool async,
unsigned long msecs)
{
if (unlikely(blk_mq_hctx_stopped(hctx)))
return;
if (!async && !(hctx->flags & BLK_MQ_F_BLOCKING)) {
if (cpumask_test_cpu(raw_smp_processor_id(), hctx->cpumask)) {
__blk_mq_run_hw_queue(hctx);
return;
}
}
kblockd_mod_delayed_work_on(blk_mq_hctx_next_cpu(hctx), &hctx->run_work,
msecs_to_jiffies(msecs));
}
/**
* blk_mq_delay_run_hw_queue - Run a hardware queue asynchronously.
* @hctx: Pointer to the hardware queue to run.
@ -2266,7 +2200,10 @@ static void __blk_mq_delay_run_hw_queue(struct blk_mq_hw_ctx *hctx, bool async,
*/
void blk_mq_delay_run_hw_queue(struct blk_mq_hw_ctx *hctx, unsigned long msecs)
{
__blk_mq_delay_run_hw_queue(hctx, true, msecs);
if (unlikely(blk_mq_hctx_stopped(hctx)))
return;
kblockd_mod_delayed_work_on(blk_mq_hctx_next_cpu(hctx), &hctx->run_work,
msecs_to_jiffies(msecs));
}
EXPORT_SYMBOL(blk_mq_delay_run_hw_queue);
@ -2283,6 +2220,11 @@ void blk_mq_run_hw_queue(struct blk_mq_hw_ctx *hctx, bool async)
{
bool need_run;
/*
* We can't run the queue inline with interrupts disabled.
*/
WARN_ON_ONCE(!async && in_interrupt());
/*
* When queue is quiesced, we may be switching io scheduler, or
* updating nr_hw_queues, or other things, and we can't run queue
@ -2295,8 +2237,17 @@ void blk_mq_run_hw_queue(struct blk_mq_hw_ctx *hctx, bool async)
need_run = !blk_queue_quiesced(hctx->queue) &&
blk_mq_hctx_has_pending(hctx));
if (need_run)
__blk_mq_delay_run_hw_queue(hctx, async, 0);
if (!need_run)
return;
if (async || (hctx->flags & BLK_MQ_F_BLOCKING) ||
!cpumask_test_cpu(raw_smp_processor_id(), hctx->cpumask)) {
blk_mq_delay_run_hw_queue(hctx, 0);
return;
}
blk_mq_run_dispatch_ops(hctx->queue,
blk_mq_sched_dispatch_requests(hctx));
}
EXPORT_SYMBOL(blk_mq_run_hw_queue);
@ -2461,79 +2412,51 @@ EXPORT_SYMBOL(blk_mq_start_stopped_hw_queues);
static void blk_mq_run_work_fn(struct work_struct *work)
{
struct blk_mq_hw_ctx *hctx;
struct blk_mq_hw_ctx *hctx =
container_of(work, struct blk_mq_hw_ctx, run_work.work);
hctx = container_of(work, struct blk_mq_hw_ctx, run_work.work);
/*
* If we are stopped, don't run the queue.
*/
if (blk_mq_hctx_stopped(hctx))
return;
__blk_mq_run_hw_queue(hctx);
}
static inline void __blk_mq_insert_req_list(struct blk_mq_hw_ctx *hctx,
struct request *rq,
bool at_head)
{
struct blk_mq_ctx *ctx = rq->mq_ctx;
enum hctx_type type = hctx->type;
lockdep_assert_held(&ctx->lock);
trace_block_rq_insert(rq);
if (at_head)
list_add(&rq->queuelist, &ctx->rq_lists[type]);
else
list_add_tail(&rq->queuelist, &ctx->rq_lists[type]);
}
void __blk_mq_insert_request(struct blk_mq_hw_ctx *hctx, struct request *rq,
bool at_head)
{
struct blk_mq_ctx *ctx = rq->mq_ctx;
lockdep_assert_held(&ctx->lock);
__blk_mq_insert_req_list(hctx, rq, at_head);
blk_mq_hctx_mark_pending(hctx, ctx);
blk_mq_run_dispatch_ops(hctx->queue,
blk_mq_sched_dispatch_requests(hctx));
}
/**
* blk_mq_request_bypass_insert - Insert a request at dispatch list.
* @rq: Pointer to request to be inserted.
* @at_head: true if the request should be inserted at the head of the list.
* @run_queue: If we should run the hardware queue after inserting the request.
* @flags: BLK_MQ_INSERT_*
*
* Should only be used carefully, when the caller knows we want to
* bypass a potential IO scheduler on the target device.
*/
void blk_mq_request_bypass_insert(struct request *rq, bool at_head,
bool run_queue)
void blk_mq_request_bypass_insert(struct request *rq, blk_insert_t flags)
{
struct blk_mq_hw_ctx *hctx = rq->mq_hctx;
spin_lock(&hctx->lock);
if (at_head)
if (flags & BLK_MQ_INSERT_AT_HEAD)
list_add(&rq->queuelist, &hctx->dispatch);
else
list_add_tail(&rq->queuelist, &hctx->dispatch);
spin_unlock(&hctx->lock);
if (run_queue)
blk_mq_run_hw_queue(hctx, false);
}
void blk_mq_insert_requests(struct blk_mq_hw_ctx *hctx, struct blk_mq_ctx *ctx,
struct list_head *list)
static void blk_mq_insert_requests(struct blk_mq_hw_ctx *hctx,
struct blk_mq_ctx *ctx, struct list_head *list,
bool run_queue_async)
{
struct request *rq;
enum hctx_type type = hctx->type;
/*
* Try to issue requests directly if the hw queue isn't busy to save an
* extra enqueue & dequeue to the sw queue.
*/
if (!hctx->dispatch_busy && !run_queue_async) {
blk_mq_run_dispatch_ops(hctx->queue,
blk_mq_try_issue_list_directly(hctx, list));
if (list_empty(list))
goto out;
}
/*
* preemption doesn't flush plug list, so it's possible ctx->cpu is
* offline now
@ -2547,6 +2470,70 @@ void blk_mq_insert_requests(struct blk_mq_hw_ctx *hctx, struct blk_mq_ctx *ctx,
list_splice_tail_init(list, &ctx->rq_lists[type]);
blk_mq_hctx_mark_pending(hctx, ctx);
spin_unlock(&ctx->lock);
out:
blk_mq_run_hw_queue(hctx, run_queue_async);
}
static void blk_mq_insert_request(struct request *rq, blk_insert_t flags)
{
struct request_queue *q = rq->q;
struct blk_mq_ctx *ctx = rq->mq_ctx;
struct blk_mq_hw_ctx *hctx = rq->mq_hctx;
if (blk_rq_is_passthrough(rq)) {
/*
* Passthrough request have to be added to hctx->dispatch
* directly. The device may be in a situation where it can't
* handle FS request, and always returns BLK_STS_RESOURCE for
* them, which gets them added to hctx->dispatch.
*
* If a passthrough request is required to unblock the queues,
* and it is added to the scheduler queue, there is no chance to
* dispatch it given we prioritize requests in hctx->dispatch.
*/
blk_mq_request_bypass_insert(rq, flags);
} else if (rq->rq_flags & RQF_FLUSH_SEQ) {
/*
* Firstly normal IO request is inserted to scheduler queue or
* sw queue, meantime we add flush request to dispatch queue(
* hctx->dispatch) directly and there is at most one in-flight
* flush request for each hw queue, so it doesn't matter to add
* flush request to tail or front of the dispatch queue.
*
* Secondly in case of NCQ, flush request belongs to non-NCQ
* command, and queueing it will fail when there is any
* in-flight normal IO request(NCQ command). When adding flush
* rq to the front of hctx->dispatch, it is easier to introduce
* extra time to flush rq's latency because of S_SCHED_RESTART
* compared with adding to the tail of dispatch queue, then
* chance of flush merge is increased, and less flush requests
* will be issued to controller. It is observed that ~10% time
* is saved in blktests block/004 on disk attached to AHCI/NCQ
* drive when adding flush rq to the front of hctx->dispatch.
*
* Simply queue flush rq to the front of hctx->dispatch so that
* intensive flush workloads can benefit in case of NCQ HW.
*/
blk_mq_request_bypass_insert(rq, BLK_MQ_INSERT_AT_HEAD);
} else if (q->elevator) {
LIST_HEAD(list);
WARN_ON_ONCE(rq->tag != BLK_MQ_NO_TAG);
list_add(&rq->queuelist, &list);
q->elevator->type->ops.insert_requests(hctx, &list, flags);
} else {
trace_block_rq_insert(rq);
spin_lock(&ctx->lock);
if (flags & BLK_MQ_INSERT_AT_HEAD)
list_add(&rq->queuelist, &ctx->rq_lists[hctx->type]);
else
list_add_tail(&rq->queuelist,
&ctx->rq_lists[hctx->type]);
blk_mq_hctx_mark_pending(hctx, ctx);
spin_unlock(&ctx->lock);
}
}
static void blk_mq_bio_to_request(struct request *rq, struct bio *bio,
@ -2600,49 +2587,19 @@ static blk_status_t __blk_mq_issue_directly(struct blk_mq_hw_ctx *hctx,
return ret;
}
static blk_status_t __blk_mq_try_issue_directly(struct blk_mq_hw_ctx *hctx,
struct request *rq,
bool bypass_insert, bool last)
static bool blk_mq_get_budget_and_tag(struct request *rq)
{
struct request_queue *q = rq->q;
bool run_queue = true;
int budget_token;
/*
* RCU or SRCU read lock is needed before checking quiesced flag.
*
* When queue is stopped or quiesced, ignore 'bypass_insert' from
* blk_mq_request_issue_directly(), and return BLK_STS_OK to caller,
* and avoid driver to try to dispatch again.
*/
if (blk_mq_hctx_stopped(hctx) || blk_queue_quiesced(q)) {
run_queue = false;
bypass_insert = false;
goto insert;
}
if ((rq->rq_flags & RQF_ELV) && !bypass_insert)
goto insert;
budget_token = blk_mq_get_dispatch_budget(q);
budget_token = blk_mq_get_dispatch_budget(rq->q);
if (budget_token < 0)
goto insert;
return false;
blk_mq_set_rq_budget_token(rq, budget_token);
if (!blk_mq_get_driver_tag(rq)) {
blk_mq_put_dispatch_budget(q, budget_token);
goto insert;
blk_mq_put_dispatch_budget(rq->q, budget_token);
return false;
}
return __blk_mq_issue_directly(hctx, rq, last);
insert:
if (bypass_insert)
return BLK_STS_RESOURCE;
blk_mq_sched_insert_request(rq, false, run_queue, false);
return BLK_STS_OK;
return true;
}
/**
@ -2658,18 +2615,46 @@ static blk_status_t __blk_mq_try_issue_directly(struct blk_mq_hw_ctx *hctx,
static void blk_mq_try_issue_directly(struct blk_mq_hw_ctx *hctx,
struct request *rq)
{
blk_status_t ret =
__blk_mq_try_issue_directly(hctx, rq, false, true);
blk_status_t ret;
if (ret == BLK_STS_RESOURCE || ret == BLK_STS_DEV_RESOURCE)
blk_mq_request_bypass_insert(rq, false, true);
else if (ret != BLK_STS_OK)
if (blk_mq_hctx_stopped(hctx) || blk_queue_quiesced(rq->q)) {
blk_mq_insert_request(rq, 0);
return;
}
if ((rq->rq_flags & RQF_ELV) || !blk_mq_get_budget_and_tag(rq)) {
blk_mq_insert_request(rq, 0);
blk_mq_run_hw_queue(hctx, false);
return;
}
ret = __blk_mq_issue_directly(hctx, rq, true);
switch (ret) {
case BLK_STS_OK:
break;
case BLK_STS_RESOURCE:
case BLK_STS_DEV_RESOURCE:
blk_mq_request_bypass_insert(rq, 0);
blk_mq_run_hw_queue(hctx, false);
break;
default:
blk_mq_end_request(rq, ret);
break;
}
}
static blk_status_t blk_mq_request_issue_directly(struct request *rq, bool last)
{
return __blk_mq_try_issue_directly(rq->mq_hctx, rq, true, last);
struct blk_mq_hw_ctx *hctx = rq->mq_hctx;
if (blk_mq_hctx_stopped(hctx) || blk_queue_quiesced(rq->q)) {
blk_mq_insert_request(rq, 0);
return BLK_STS_OK;
}
if (!blk_mq_get_budget_and_tag(rq))
return BLK_STS_RESOURCE;
return __blk_mq_issue_directly(hctx, rq, last);
}
static void blk_mq_plug_issue_direct(struct blk_plug *plug)
@ -2697,7 +2682,8 @@ static void blk_mq_plug_issue_direct(struct blk_plug *plug)
break;
case BLK_STS_RESOURCE:
case BLK_STS_DEV_RESOURCE:
blk_mq_request_bypass_insert(rq, false, true);
blk_mq_request_bypass_insert(rq, 0);
blk_mq_run_hw_queue(hctx, false);
goto out;
default:
blk_mq_end_request(rq, ret);
@ -2743,7 +2729,16 @@ static void blk_mq_dispatch_plug_list(struct blk_plug *plug, bool from_sched)
plug->mq_list = requeue_list;
trace_block_unplug(this_hctx->queue, depth, !from_sched);
blk_mq_sched_insert_requests(this_hctx, this_ctx, &list, from_sched);
percpu_ref_get(&this_hctx->queue->q_usage_counter);
if (this_hctx->queue->elevator) {
this_hctx->queue->elevator->type->ops.insert_requests(this_hctx,
&list, 0);
blk_mq_run_hw_queue(this_hctx, from_sched);
} else {
blk_mq_insert_requests(this_hctx, this_ctx, &list, from_sched);
}
percpu_ref_put(&this_hctx->queue->q_usage_counter);
}
void blk_mq_flush_plug_list(struct blk_plug *plug, bool from_schedule)
@ -2789,7 +2784,7 @@ void blk_mq_flush_plug_list(struct blk_plug *plug, bool from_schedule)
} while (!rq_list_empty(plug->mq_list));
}
void blk_mq_try_issue_list_directly(struct blk_mq_hw_ctx *hctx,
static void blk_mq_try_issue_list_directly(struct blk_mq_hw_ctx *hctx,
struct list_head *list)
{
int queued = 0;
@ -2807,8 +2802,9 @@ void blk_mq_try_issue_list_directly(struct blk_mq_hw_ctx *hctx,
break;
case BLK_STS_RESOURCE:
case BLK_STS_DEV_RESOURCE:
blk_mq_request_bypass_insert(rq, false,
list_empty(list));
blk_mq_request_bypass_insert(rq, 0);
if (list_empty(list))
blk_mq_run_hw_queue(hctx, false);
goto out;
default:
blk_mq_end_request(rq, ret);
@ -2934,6 +2930,7 @@ void blk_mq_submit_bio(struct bio *bio)
struct request_queue *q = bdev_get_queue(bio->bi_bdev);
struct blk_plug *plug = blk_mq_plug(bio);
const int is_sync = op_is_sync(bio->bi_opf);
struct blk_mq_hw_ctx *hctx;
struct request *rq;
unsigned int nr_segs = 1;
blk_status_t ret;
@ -2965,7 +2962,7 @@ void blk_mq_submit_bio(struct bio *bio)
blk_mq_bio_to_request(rq, bio, nr_segs);
ret = blk_crypto_init_request(rq);
ret = blk_crypto_rq_get_keyslot(rq);
if (ret != BLK_STS_OK) {
bio->bi_status = ret;
bio_endio(bio);
@ -2978,15 +2975,19 @@ void blk_mq_submit_bio(struct bio *bio)
return;
}
if (plug)
if (plug) {
blk_add_rq_to_plug(plug, rq);
else if ((rq->rq_flags & RQF_ELV) ||
(rq->mq_hctx->dispatch_busy &&
(q->nr_hw_queues == 1 || !is_sync)))
blk_mq_sched_insert_request(rq, false, true, true);
else
blk_mq_run_dispatch_ops(rq->q,
blk_mq_try_issue_directly(rq->mq_hctx, rq));
return;
}
hctx = rq->mq_hctx;
if ((rq->rq_flags & RQF_ELV) ||
(hctx->dispatch_busy && (q->nr_hw_queues == 1 || !is_sync))) {
blk_mq_insert_request(rq, 0);
blk_mq_run_hw_queue(hctx, true);
} else {
blk_mq_run_dispatch_ops(q, blk_mq_try_issue_directly(hctx, rq));
}
}
#ifdef CONFIG_BLK_MQ_STACKING
@ -3034,8 +3035,9 @@ blk_status_t blk_insert_cloned_request(struct request *rq)
if (q->disk && should_fail_request(q->disk->part0, blk_rq_bytes(rq)))
return BLK_STS_IOERR;
if (blk_crypto_insert_cloned_request(rq))
return BLK_STS_IOERR;
ret = blk_crypto_rq_get_keyslot(rq);
if (ret != BLK_STS_OK)
return ret;
blk_account_io_start(rq);
@ -4206,14 +4208,8 @@ int blk_mq_init_allocated_queue(struct blk_mq_tag_set *set,
/* mark the queue as mq asap */
q->mq_ops = set->ops;
q->poll_cb = blk_stat_alloc_callback(blk_mq_poll_stats_fn,
blk_mq_poll_stats_bkt,
BLK_MQ_POLL_STATS_BKTS, q);
if (!q->poll_cb)
goto err_exit;
if (blk_mq_alloc_ctxs(q))
goto err_poll;
goto err_exit;
/* init q->mq_kobj and sw queues' kobjects */
blk_mq_sysfs_init(q);
@ -4241,11 +4237,6 @@ int blk_mq_init_allocated_queue(struct blk_mq_tag_set *set,
q->nr_requests = set->queue_depth;
/*
* Default to classic polling
*/
q->poll_nsec = BLK_MQ_POLL_CLASSIC;
blk_mq_init_cpu_queues(q, set->nr_hw_queues);
blk_mq_add_queue_tag_set(set, q);
blk_mq_map_swqueue(q);
@ -4253,9 +4244,6 @@ int blk_mq_init_allocated_queue(struct blk_mq_tag_set *set,
err_hctxs:
blk_mq_release(q);
err_poll:
blk_stat_free_callback(q->poll_cb);
q->poll_cb = NULL;
err_exit:
q->mq_ops = NULL;
return -ENOMEM;
@ -4752,138 +4740,8 @@ void blk_mq_update_nr_hw_queues(struct blk_mq_tag_set *set, int nr_hw_queues)
}
EXPORT_SYMBOL_GPL(blk_mq_update_nr_hw_queues);
/* Enable polling stats and return whether they were already enabled. */
static bool blk_poll_stats_enable(struct request_queue *q)
{
if (q->poll_stat)
return true;
return blk_stats_alloc_enable(q);
}
static void blk_mq_poll_stats_start(struct request_queue *q)
{
/*
* We don't arm the callback if polling stats are not enabled or the
* callback is already active.
*/
if (!q->poll_stat || blk_stat_is_active(q->poll_cb))
return;
blk_stat_activate_msecs(q->poll_cb, 100);
}
static void blk_mq_poll_stats_fn(struct blk_stat_callback *cb)
{
struct request_queue *q = cb->data;
int bucket;
for (bucket = 0; bucket < BLK_MQ_POLL_STATS_BKTS; bucket++) {
if (cb->stat[bucket].nr_samples)
q->poll_stat[bucket] = cb->stat[bucket];
}
}
static unsigned long blk_mq_poll_nsecs(struct request_queue *q,
struct request *rq)
{
unsigned long ret = 0;
int bucket;
/*
* If stats collection isn't on, don't sleep but turn it on for
* future users
*/
if (!blk_poll_stats_enable(q))
return 0;
/*
* As an optimistic guess, use half of the mean service time
* for this type of request. We can (and should) make this smarter.
* For instance, if the completion latencies are tight, we can
* get closer than just half the mean. This is especially
* important on devices where the completion latencies are longer
* than ~10 usec. We do use the stats for the relevant IO size
* if available which does lead to better estimates.
*/
bucket = blk_mq_poll_stats_bkt(rq);
if (bucket < 0)
return ret;
if (q->poll_stat[bucket].nr_samples)
ret = (q->poll_stat[bucket].mean + 1) / 2;
return ret;
}
static bool blk_mq_poll_hybrid(struct request_queue *q, blk_qc_t qc)
{
struct blk_mq_hw_ctx *hctx = blk_qc_to_hctx(q, qc);
struct request *rq = blk_qc_to_rq(hctx, qc);
struct hrtimer_sleeper hs;
enum hrtimer_mode mode;
unsigned int nsecs;
ktime_t kt;
/*
* If a request has completed on queue that uses an I/O scheduler, we
* won't get back a request from blk_qc_to_rq.
*/
if (!rq || (rq->rq_flags & RQF_MQ_POLL_SLEPT))
return false;
/*
* If we get here, hybrid polling is enabled. Hence poll_nsec can be:
*
* 0: use half of prev avg
* >0: use this specific value
*/
if (q->poll_nsec > 0)
nsecs = q->poll_nsec;
else
nsecs = blk_mq_poll_nsecs(q, rq);
if (!nsecs)
return false;
rq->rq_flags |= RQF_MQ_POLL_SLEPT;
/*
* This will be replaced with the stats tracking code, using
* 'avg_completion_time / 2' as the pre-sleep target.
*/
kt = nsecs;
mode = HRTIMER_MODE_REL;
hrtimer_init_sleeper_on_stack(&hs, CLOCK_MONOTONIC, mode);
hrtimer_set_expires(&hs.timer, kt);
do {
if (blk_mq_rq_state(rq) == MQ_RQ_COMPLETE)
break;
set_current_state(TASK_UNINTERRUPTIBLE);
hrtimer_sleeper_start_expires(&hs, mode);
if (hs.task)
io_schedule();
hrtimer_cancel(&hs.timer);
mode = HRTIMER_MODE_ABS;
} while (hs.task && !signal_pending(current));
__set_current_state(TASK_RUNNING);
destroy_hrtimer_on_stack(&hs.timer);
/*
* If we sleep, have the caller restart the poll loop to reset the
* state. Like for the other success return cases, the caller is
* responsible for checking if the IO completed. If the IO isn't
* complete, we'll get called again and will go straight to the busy
* poll loop.
*/
return true;
}
static int blk_mq_poll_classic(struct request_queue *q, blk_qc_t cookie,
struct io_comp_batch *iob, unsigned int flags)
int blk_mq_poll(struct request_queue *q, blk_qc_t cookie, struct io_comp_batch *iob,
unsigned int flags)
{
struct blk_mq_hw_ctx *hctx = blk_qc_to_hctx(q, cookie);
long state = get_current_state();
@ -4910,17 +4768,6 @@ static int blk_mq_poll_classic(struct request_queue *q, blk_qc_t cookie,
return 0;
}
int blk_mq_poll(struct request_queue *q, blk_qc_t cookie, struct io_comp_batch *iob,
unsigned int flags)
{
if (!(flags & BLK_POLL_NOSLEEP) &&
q->poll_nsec != BLK_MQ_POLL_CLASSIC) {
if (blk_mq_poll_hybrid(q, cookie))
return 1;
}
return blk_mq_poll_classic(q, cookie, iob, flags);
}
unsigned int blk_mq_rq_cpu(struct request *rq)
{
return rq->mq_ctx->cpu;

77
block/blk-mq.h
View File

@ -2,8 +2,8 @@
#ifndef INT_BLK_MQ_H
#define INT_BLK_MQ_H
#include <linux/blk-mq.h>
#include "blk-stat.h"
#include "blk-mq-tag.h"
struct blk_mq_tag_set;
@ -30,6 +30,15 @@ struct blk_mq_ctx {
struct kobject kobj;
} ____cacheline_aligned_in_smp;
enum {
BLK_MQ_NO_TAG = -1U,
BLK_MQ_TAG_MIN = 1,
BLK_MQ_TAG_MAX = BLK_MQ_NO_TAG - 1,
};
typedef unsigned int __bitwise blk_insert_t;
#define BLK_MQ_INSERT_AT_HEAD ((__force blk_insert_t)0x01)
void blk_mq_submit_bio(struct bio *bio);
int blk_mq_poll(struct request_queue *q, blk_qc_t cookie, struct io_comp_batch *iob,
unsigned int flags);
@ -38,8 +47,7 @@ int blk_mq_update_nr_requests(struct request_queue *q, unsigned int nr);
void blk_mq_wake_waiters(struct request_queue *q);
bool blk_mq_dispatch_rq_list(struct blk_mq_hw_ctx *hctx, struct list_head *,
unsigned int);
void blk_mq_add_to_requeue_list(struct request *rq, bool at_head,
bool kick_requeue_list);
void blk_mq_add_to_requeue_list(struct request *rq, blk_insert_t insert_flags);
void blk_mq_flush_busy_ctxs(struct blk_mq_hw_ctx *hctx, struct list_head *list);
struct request *blk_mq_dequeue_from_ctx(struct blk_mq_hw_ctx *hctx,
struct blk_mq_ctx *start);
@ -59,14 +67,7 @@ void blk_mq_free_map_and_rqs(struct blk_mq_tag_set *set,
/*
* Internal helpers for request insertion into sw queues
*/
void __blk_mq_insert_request(struct blk_mq_hw_ctx *hctx, struct request *rq,
bool at_head);
void blk_mq_request_bypass_insert(struct request *rq, bool at_head,
bool run_queue);
void blk_mq_insert_requests(struct blk_mq_hw_ctx *hctx, struct blk_mq_ctx *ctx,
struct list_head *list);
void blk_mq_try_issue_list_directly(struct blk_mq_hw_ctx *hctx,
struct list_head *list);
void blk_mq_request_bypass_insert(struct request *rq, blk_insert_t flags);
/*
* CPU -> queue mappings
@ -164,6 +165,60 @@ struct blk_mq_alloc_data {
struct blk_mq_hw_ctx *hctx;
};
struct blk_mq_tags *blk_mq_init_tags(unsigned int nr_tags,
unsigned int reserved_tags, int node, int alloc_policy);
void blk_mq_free_tags(struct blk_mq_tags *tags);
int blk_mq_init_bitmaps(struct sbitmap_queue *bitmap_tags,
struct sbitmap_queue *breserved_tags, unsigned int queue_depth,
unsigned int reserved, int node, int alloc_policy);
unsigned int blk_mq_get_tag(struct blk_mq_alloc_data *data);
unsigned long blk_mq_get_tags(struct blk_mq_alloc_data *data, int nr_tags,
unsigned int *offset);
void blk_mq_put_tag(struct blk_mq_tags *tags, struct blk_mq_ctx *ctx,
unsigned int tag);
void blk_mq_put_tags(struct blk_mq_tags *tags, int *tag_array, int nr_tags);
int blk_mq_tag_update_depth(struct blk_mq_hw_ctx *hctx,
struct blk_mq_tags **tags, unsigned int depth, bool can_grow);
void blk_mq_tag_resize_shared_tags(struct blk_mq_tag_set *set,
unsigned int size);
void blk_mq_tag_update_sched_shared_tags(struct request_queue *q);
void blk_mq_tag_wakeup_all(struct blk_mq_tags *tags, bool);
void blk_mq_queue_tag_busy_iter(struct request_queue *q, busy_tag_iter_fn *fn,
void *priv);
void blk_mq_all_tag_iter(struct blk_mq_tags *tags, busy_tag_iter_fn *fn,
void *priv);
static inline struct sbq_wait_state *bt_wait_ptr(struct sbitmap_queue *bt,
struct blk_mq_hw_ctx *hctx)
{
if (!hctx)
return &bt->ws[0];
return sbq_wait_ptr(bt, &hctx->wait_index);
}
void __blk_mq_tag_busy(struct blk_mq_hw_ctx *);
void __blk_mq_tag_idle(struct blk_mq_hw_ctx *);
static inline void blk_mq_tag_busy(struct blk_mq_hw_ctx *hctx)
{
if (hctx->flags & BLK_MQ_F_TAG_QUEUE_SHARED)
__blk_mq_tag_busy(hctx);
}
static inline void blk_mq_tag_idle(struct blk_mq_hw_ctx *hctx)
{
if (hctx->flags & BLK_MQ_F_TAG_QUEUE_SHARED)
__blk_mq_tag_idle(hctx);
}
static inline bool blk_mq_tag_is_reserved(struct blk_mq_tags *tags,
unsigned int tag)
{
return tag < tags->nr_reserved_tags;
}
static inline bool blk_mq_is_shared_tags(unsigned int flags)
{
return flags & BLK_MQ_F_TAG_HCTX_SHARED;

2
block/blk-pm.c
View File

@ -1,11 +1,9 @@
// SPDX-License-Identifier: GPL-2.0
#include <linux/blk-mq.h>
#include <linux/blk-pm.h>
#include <linux/blkdev.h>
#include <linux/pm_runtime.h>
#include "blk-mq.h"
#include "blk-mq-tag.h"
/**
* blk_pm_runtime_init - Block layer runtime PM initialization routine

2
block/blk-rq-qos.h
View File

@ -74,7 +74,7 @@ static inline struct rq_qos *wbt_rq_qos(struct request_queue *q)
return rq_qos_id(q, RQ_QOS_WBT);
}
static inline struct rq_qos *blkcg_rq_qos(struct request_queue *q)
static inline struct rq_qos *iolat_rq_qos(struct request_queue *q)
{
return rq_qos_id(q, RQ_QOS_LATENCY);
}

23
block/blk-stat.c
View File

@ -6,7 +6,6 @@
*/
#include <linux/kernel.h>
#include <linux/rculist.h>
#include <linux/blk-mq.h>
#include "blk-stat.h"
#include "blk-mq.h"
@ -190,7 +189,7 @@ void blk_stat_disable_accounting(struct request_queue *q)
unsigned long flags;
spin_lock_irqsave(&q->stats->lock, flags);
if (!--q->stats->accounting)
if (!--q->stats->accounting && list_empty(&q->stats->callbacks))
blk_queue_flag_clear(QUEUE_FLAG_STATS, q);
spin_unlock_irqrestore(&q->stats->lock, flags);
}
@ -201,7 +200,7 @@ void blk_stat_enable_accounting(struct request_queue *q)
unsigned long flags;
spin_lock_irqsave(&q->stats->lock, flags);
if (!q->stats->accounting++)
if (!q->stats->accounting++ && list_empty(&q->stats->callbacks))
blk_queue_flag_set(QUEUE_FLAG_STATS, q);
spin_unlock_irqrestore(&q->stats->lock, flags);
}
@ -231,21 +230,3 @@ void blk_free_queue_stats(struct blk_queue_stats *stats)
kfree(stats);
}
bool blk_stats_alloc_enable(struct request_queue *q)
{
struct blk_rq_stat *poll_stat;
poll_stat = kcalloc(BLK_MQ_POLL_STATS_BKTS, sizeof(*poll_stat),
GFP_ATOMIC);
if (!poll_stat)
return false;
if (cmpxchg(&q->poll_stat, NULL, poll_stat) != NULL) {
kfree(poll_stat);
return true;
}
blk_stat_add_callback(q, q->poll_cb);
return false;
}

26
block/blk-sysfs.c
View File

@ -9,7 +9,6 @@
#include <linux/blkdev.h>
#include <linux/backing-dev.h>
#include <linux/blktrace_api.h>
#include <linux/blk-mq.h>
#include <linux/debugfs.h>
#include "blk.h"
@ -408,35 +407,12 @@ queue_rq_affinity_store(struct request_queue *q, const char *page, size_t count)
static ssize_t queue_poll_delay_show(struct request_queue *q, char *page)
{
int val;
if (q->poll_nsec == BLK_MQ_POLL_CLASSIC)
val = BLK_MQ_POLL_CLASSIC;
else
val = q->poll_nsec / 1000;
return sprintf(page, "%d\n", val);
return sprintf(page, "%d\n", -1);
}
static ssize_t queue_poll_delay_store(struct request_queue *q, const char *page,
size_t count)
{
int err, val;
if (!q->mq_ops || !q->mq_ops->poll)
return -EINVAL;
err = kstrtoint(page, 10, &val);
if (err < 0)
return err;
if (val == BLK_MQ_POLL_CLASSIC)
q->poll_nsec = BLK_MQ_POLL_CLASSIC;
else if (val >= 0)
q->poll_nsec = val * 1000;
else
return -EINVAL;
return count;
}

19
block/blk-throttle.c
View File

@ -1368,9 +1368,11 @@ static ssize_t tg_set_conf(struct kernfs_open_file *of,
int ret;
u64 v;
ret = blkg_conf_prep(blkcg, &blkcg_policy_throtl, buf, &ctx);
blkg_conf_init(&ctx, buf);
ret = blkg_conf_prep(blkcg, &blkcg_policy_throtl, &ctx);
if (ret)
return ret;
goto out_finish;
ret = -EINVAL;
if (sscanf(ctx.body, "%llu", &v) != 1)
@ -1389,7 +1391,7 @@ static ssize_t tg_set_conf(struct kernfs_open_file *of,
tg_conf_updated(tg, false);
ret = 0;
out_finish:
blkg_conf_finish(&ctx);
blkg_conf_exit(&ctx);
return ret ?: nbytes;
}
@ -1561,9 +1563,11 @@ static ssize_t tg_set_limit(struct kernfs_open_file *of,
int ret;
int index = of_cft(of)->private;
ret = blkg_conf_prep(blkcg, &blkcg_policy_throtl, buf, &ctx);
blkg_conf_init(&ctx, buf);
ret = blkg_conf_prep(blkcg, &blkcg_policy_throtl, &ctx);
if (ret)
return ret;
goto out_finish;
tg = blkg_to_tg(ctx.blkg);
tg_update_carryover(tg);
@ -1662,7 +1666,7 @@ static ssize_t tg_set_limit(struct kernfs_open_file *of,
tg->td->limit_valid[LIMIT_LOW]);
ret = 0;
out_finish:
blkg_conf_finish(&ctx);
blkg_conf_exit(&ctx);
return ret ?: nbytes;
}
@ -2439,11 +2443,12 @@ void blk_throtl_register(struct gendisk *disk)
#ifndef CONFIG_BLK_DEV_THROTTLING_LOW
/* if no low limit, use previous default */
td->throtl_slice = DFL_THROTL_SLICE_HD;
#endif
#else
td->track_bio_latency = !queue_is_mq(q);
if (!td->track_bio_latency)
blk_stat_enable_accounting(q);
#endif
}
#ifdef CONFIG_BLK_DEV_THROTTLING_LOW

6
block/blk.h
View File

@ -399,12 +399,6 @@ static inline struct bio *blk_queue_bounce(struct bio *bio,
return bio;
}
#ifdef CONFIG_BLK_CGROUP_IOLATENCY
int blk_iolatency_init(struct gendisk *disk);
#else
static inline int blk_iolatency_init(struct gendisk *disk) { return 0; };
#endif
#ifdef CONFIG_BLK_DEV_ZONED
void disk_free_zone_bitmaps(struct gendisk *disk);
void disk_clear_zone_settings(struct gendisk *disk);

4
block/elevator.h
View File

@ -4,6 +4,7 @@
#include <linux/percpu.h>
#include <linux/hashtable.h>
#include "blk-mq.h"
struct io_cq;
struct elevator_type;
@ -37,7 +38,8 @@ struct elevator_mq_ops {
void (*limit_depth)(blk_opf_t, struct blk_mq_alloc_data *);
void (*prepare_request)(struct request *);
void (*finish_request)(struct request *);
void (*insert_requests)(struct blk_mq_hw_ctx *, struct list_head *, bool);
void (*insert_requests)(struct blk_mq_hw_ctx *hctx, struct list_head *list,
blk_insert_t flags);
struct request *(*dispatch_request)(struct blk_mq_hw_ctx *);
bool (*has_work)(struct blk_mq_hw_ctx *);
void (*completed_request)(struct request *, u64);

3
block/genhd.c
View File

@ -426,6 +426,9 @@ int __must_check device_add_disk(struct device *parent, struct gendisk *disk,
*/
elevator_init_mq(disk->queue);
/* Mark bdev as having a submit_bio, if needed */
disk->part0->bd_has_submit_bio = disk->fops->submit_bio != NULL;
/*
* If the driver provides an explicit major number it also must provide
* the number of minors numbers supported, and those will be used to

7
block/kyber-iosched.c
View File

@ -8,7 +8,6 @@
#include <linux/kernel.h>
#include <linux/blkdev.h>
#include <linux/blk-mq.h>
#include <linux/module.h>
#include <linux/sbitmap.h>
@ -19,7 +18,6 @@
#include "blk-mq.h"
#include "blk-mq-debugfs.h"
#include "blk-mq-sched.h"
#include "blk-mq-tag.h"
#define CREATE_TRACE_POINTS
#include <trace/events/kyber.h>
@ -590,7 +588,8 @@ static void kyber_prepare_request(struct request *rq)
}
static void kyber_insert_requests(struct blk_mq_hw_ctx *hctx,
struct list_head *rq_list, bool at_head)
struct list_head *rq_list,
blk_insert_t flags)
{
struct kyber_hctx_data *khd = hctx->sched_data;
struct request *rq, *next;
@ -602,7 +601,7 @@ static void kyber_insert_requests(struct blk_mq_hw_ctx *hctx,
spin_lock(&kcq->lock);
trace_block_rq_insert(rq);
if (at_head)
if (flags & BLK_MQ_INSERT_AT_HEAD)
list_move(&rq->queuelist, head);
else
list_move_tail(&rq->queuelist, head);

13
block/mq-deadline.c
View File

@ -8,7 +8,6 @@
#include <linux/kernel.h>
#include <linux/fs.h>
#include <linux/blkdev.h>
#include <linux/blk-mq.h>
#include <linux/bio.h>
#include <linux/module.h>
#include <linux/slab.h>
@ -23,7 +22,6 @@
#include "blk.h"
#include "blk-mq.h"
#include "blk-mq-debugfs.h"
#include "blk-mq-tag.h"
#include "blk-mq-sched.h"
/*
@ -768,7 +766,7 @@ static bool dd_bio_merge(struct request_queue *q, struct bio *bio,
* add rq to rbtree and fifo
*/
static void dd_insert_request(struct blk_mq_hw_ctx *hctx, struct request *rq,
bool at_head)
blk_insert_t flags)
{
struct request_queue *q = hctx->queue;
struct deadline_data *dd = q->elevator->elevator_data;
@ -801,7 +799,7 @@ static void dd_insert_request(struct blk_mq_hw_ctx *hctx, struct request *rq,
trace_block_rq_insert(rq);
if (at_head) {
if (flags & BLK_MQ_INSERT_AT_HEAD) {
list_add(&rq->queuelist, &per_prio->dispatch);
rq->fifo_time = jiffies;
} else {
@ -822,10 +820,11 @@ static void dd_insert_request(struct blk_mq_hw_ctx *hctx, struct request *rq,
}
/*
* Called from blk_mq_sched_insert_request() or blk_mq_sched_insert_requests().
* Called from blk_mq_insert_request() or blk_mq_dispatch_plug_list().
*/
static void dd_insert_requests(struct blk_mq_hw_ctx *hctx,
struct list_head *list, bool at_head)
struct list_head *list,
blk_insert_t flags)
{
struct request_queue *q = hctx->queue;
struct deadline_data *dd = q->elevator->elevator_data;
@ -836,7 +835,7 @@ static void dd_insert_requests(struct blk_mq_hw_ctx *hctx,
rq = list_first_entry(list, struct request, queuelist);
list_del_init(&rq->queuelist);
dd_insert_request(hctx, rq, at_head);
dd_insert_request(hctx, rq, flags);
}
spin_unlock(&dd->lock);
}

10
block/opal_proto.h
View File

@ -86,6 +86,15 @@ enum opal_response_token {
#define OPAL_MSID_KEYLEN 15
#define OPAL_UID_LENGTH_HALF 4
/*
* Boolean operators from TCG Core spec 2.01 Section:
* 5.1.3.11
* Table 61
*/
#define OPAL_BOOLEAN_AND 0
#define OPAL_BOOLEAN_OR 1
#define OPAL_BOOLEAN_NOT 2
/* Enum to index OPALUID array */
enum opal_uid {
/* users */
@ -105,6 +114,7 @@ enum opal_uid {
/* tables */
OPAL_TABLE_TABLE,
OPAL_LOCKINGRANGE_GLOBAL,
OPAL_LOCKINGRANGE_ACE_START_TO_KEY,
OPAL_LOCKINGRANGE_ACE_RDLOCKED,
OPAL_LOCKINGRANGE_ACE_WRLOCKED,
OPAL_MBRCONTROL,

330
block/sed-opal.c
View File

@ -83,8 +83,10 @@ struct opal_dev {
u16 comid;
u32 hsn;
u32 tsn;
u64 align;
u64 align; /* alignment granularity */
u64 lowest_lba;
u32 logical_block_size;
u8 align_required; /* ALIGN: 0 or 1 */
size_t pos;
u8 *cmd;
@ -132,6 +134,8 @@ static const u8 opaluid[][OPAL_UID_LENGTH] = {
{ 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01 },
[OPAL_LOCKINGRANGE_GLOBAL] =
{ 0x00, 0x00, 0x08, 0x02, 0x00, 0x00, 0x00, 0x01 },
[OPAL_LOCKINGRANGE_ACE_START_TO_KEY] =
{ 0x00, 0x00, 0x00, 0x08, 0x00, 0x03, 0xD0, 0x01 },
[OPAL_LOCKINGRANGE_ACE_RDLOCKED] =
{ 0x00, 0x00, 0x00, 0x08, 0x00, 0x03, 0xE0, 0x01 },
[OPAL_LOCKINGRANGE_ACE_WRLOCKED] =
@ -407,6 +411,8 @@ static void check_geometry(struct opal_dev *dev, const void *data)
dev->align = be64_to_cpu(geo->alignment_granularity);
dev->lowest_lba = be64_to_cpu(geo->lowest_aligned_lba);
dev->logical_block_size = be32_to_cpu(geo->logical_block_size);
dev->align_required = geo->reserved01 & 1;
}
static int execute_step(struct opal_dev *dev,
@ -1147,12 +1153,8 @@ static int finalize_and_send(struct opal_dev *dev, cont_fn cont)
return opal_send_recv(dev, cont);
}
/*
* request @column from table @table on device @dev. On success, the column
* data will be available in dev->resp->tok[4]
*/
static int generic_get_column(struct opal_dev *dev, const u8 *table,
u64 column)
static int generic_get_columns(struct opal_dev *dev, const u8 *table,
u64 start_column, u64 end_column)
{
int err;
@ -1162,12 +1164,12 @@ static int generic_get_column(struct opal_dev *dev, const u8 *table,
add_token_u8(&err, dev, OPAL_STARTNAME);
add_token_u8(&err, dev, OPAL_STARTCOLUMN);
add_token_u64(&err, dev, column);
add_token_u64(&err, dev, start_column);
add_token_u8(&err, dev, OPAL_ENDNAME);
add_token_u8(&err, dev, OPAL_STARTNAME);
add_token_u8(&err, dev, OPAL_ENDCOLUMN);
add_token_u64(&err, dev, column);
add_token_u64(&err, dev, end_column);
add_token_u8(&err, dev, OPAL_ENDNAME);
add_token_u8(&err, dev, OPAL_ENDLIST);
@ -1178,6 +1180,16 @@ static int generic_get_column(struct opal_dev *dev, const u8 *table,
return finalize_and_send(dev, parse_and_check_status);
}
/*
* request @column from table @table on device @dev. On success, the column
* data will be available in dev->resp->tok[4]
*/
static int generic_get_column(struct opal_dev *dev, const u8 *table,
u64 column)
{
return generic_get_columns(dev, table, column, column);
}
/*
* see TCG SAS 5.3.2.3 for a description of the available columns
*
@ -1437,6 +1449,129 @@ static int setup_locking_range(struct opal_dev *dev, void *data)
return finalize_and_send(dev, parse_and_check_status);
}
static int response_get_column(const struct parsed_resp *resp,
int *iter,
u8 column,
u64 *value)
{
const struct opal_resp_tok *tok;
int n = *iter;
u64 val;
tok = response_get_token(resp, n);
if (IS_ERR(tok))
return PTR_ERR(tok);
if (!response_token_matches(tok, OPAL_STARTNAME)) {
pr_debug("Unexpected response token type %d.\n", n);
return OPAL_INVAL_PARAM;
}
n++;
if (response_get_u64(resp, n) != column) {
pr_debug("Token %d does not match expected column %u.\n",
n, column);
return OPAL_INVAL_PARAM;
}
n++;
val = response_get_u64(resp, n);
n++;
tok = response_get_token(resp, n);
if (IS_ERR(tok))
return PTR_ERR(tok);
if (!response_token_matches(tok, OPAL_ENDNAME)) {
pr_debug("Unexpected response token type %d.\n", n);
return OPAL_INVAL_PARAM;
}
n++;
*value = val;
*iter = n;
return 0;
}
static int locking_range_status(struct opal_dev *dev, void *data)
{
u8 lr_buffer[OPAL_UID_LENGTH];
u64 resp;
bool rlocked, wlocked;
int err, tok_n = 2;
struct opal_lr_status *lrst = data;
err = build_locking_range(lr_buffer, sizeof(lr_buffer),
lrst->session.opal_key.lr);
if (err)
return err;
err = generic_get_columns(dev, lr_buffer, OPAL_RANGESTART,
OPAL_WRITELOCKED);
if (err) {
pr_debug("Couldn't get lr %u table columns %d to %d.\n",
lrst->session.opal_key.lr, OPAL_RANGESTART,
OPAL_WRITELOCKED);
return err;
}
/* range start */
err = response_get_column(&dev->parsed, &tok_n, OPAL_RANGESTART,
&lrst->range_start);
if (err)
return err;
/* range length */
err = response_get_column(&dev->parsed, &tok_n, OPAL_RANGELENGTH,
&lrst->range_length);
if (err)
return err;
/* RLE */
err = response_get_column(&dev->parsed, &tok_n, OPAL_READLOCKENABLED,
&resp);
if (err)
return err;
lrst->RLE = !!resp;
/* WLE */
err = response_get_column(&dev->parsed, &tok_n, OPAL_WRITELOCKENABLED,
&resp);
if (err)
return err;
lrst->WLE = !!resp;
/* read locked */
err = response_get_column(&dev->parsed, &tok_n, OPAL_READLOCKED, &resp);
if (err)
return err;
rlocked = !!resp;
/* write locked */
err = response_get_column(&dev->parsed, &tok_n, OPAL_WRITELOCKED, &resp);
if (err)
return err;
wlocked = !!resp;
/* opal_lock_state can not map 'read locked' only state. */
lrst->l_state = OPAL_RW;
if (rlocked && wlocked)
lrst->l_state = OPAL_LK;
else if (wlocked)
lrst->l_state = OPAL_RO;
else if (rlocked) {
pr_debug("Can not report read locked only state.\n");
return -EINVAL;
}
return 0;
}
static int start_generic_opal_session(struct opal_dev *dev,
enum opal_uid auth,
enum opal_uid sp_type,
@ -1759,25 +1894,43 @@ static int set_sid_cpin_pin(struct opal_dev *dev, void *data)
return finalize_and_send(dev, parse_and_check_status);
}
static int add_user_to_lr(struct opal_dev *dev, void *data)
static void add_authority_object_ref(int *err,
struct opal_dev *dev,
const u8 *uid,
size_t uid_len)
{
add_token_u8(err, dev, OPAL_STARTNAME);
add_token_bytestring(err, dev,
opaluid[OPAL_HALF_UID_AUTHORITY_OBJ_REF],
OPAL_UID_LENGTH/2);
add_token_bytestring(err, dev, uid, uid_len);
add_token_u8(err, dev, OPAL_ENDNAME);
}
static void add_boolean_object_ref(int *err,
struct opal_dev *dev,
u8 boolean_op)
{
add_token_u8(err, dev, OPAL_STARTNAME);
add_token_bytestring(err, dev, opaluid[OPAL_HALF_UID_BOOLEAN_ACE],
OPAL_UID_LENGTH/2);
add_token_u8(err, dev, boolean_op);
add_token_u8(err, dev, OPAL_ENDNAME);
}
static int set_lr_boolean_ace(struct opal_dev *dev,
unsigned int opal_uid,
u8 lr,
const u8 *users,
size_t users_len)
{
u8 lr_buffer[OPAL_UID_LENGTH];
u8 user_uid[OPAL_UID_LENGTH];
struct opal_lock_unlock *lkul = data;
u8 u;
int err;
memcpy(lr_buffer, opaluid[OPAL_LOCKINGRANGE_ACE_RDLOCKED],
OPAL_UID_LENGTH);
if (lkul->l_state == OPAL_RW)
memcpy(lr_buffer, opaluid[OPAL_LOCKINGRANGE_ACE_WRLOCKED],
OPAL_UID_LENGTH);
lr_buffer[7] = lkul->session.opal_key.lr;
memcpy(user_uid, opaluid[OPAL_USER1_UID], OPAL_UID_LENGTH);
user_uid[7] = lkul->session.who;
memcpy(lr_buffer, opaluid[opal_uid], OPAL_UID_LENGTH);
lr_buffer[7] = lr;
err = cmd_start(dev, lr_buffer, opalmethod[OPAL_SET]);
@ -1790,35 +1943,49 @@ static int add_user_to_lr(struct opal_dev *dev, void *data)
add_token_u8(&err, dev, OPAL_STARTLIST);
for (u = 0; u < users_len; u++) {
if (users[u] == OPAL_ADMIN1)
memcpy(user_uid, opaluid[OPAL_ADMIN1_UID],
OPAL_UID_LENGTH);
else {
memcpy(user_uid, opaluid[OPAL_USER1_UID],
OPAL_UID_LENGTH);
user_uid[7] = users[u];
}
add_token_u8(&err, dev, OPAL_STARTNAME);
add_token_bytestring(&err, dev,
opaluid[OPAL_HALF_UID_AUTHORITY_OBJ_REF],
OPAL_UID_LENGTH/2);
add_token_bytestring(&err, dev, user_uid, OPAL_UID_LENGTH);
add_token_u8(&err, dev, OPAL_ENDNAME);
add_token_u8(&err, dev, OPAL_STARTNAME);
add_token_bytestring(&err, dev,
opaluid[OPAL_HALF_UID_AUTHORITY_OBJ_REF],
OPAL_UID_LENGTH/2);
add_token_bytestring(&err, dev, user_uid, OPAL_UID_LENGTH);
add_token_u8(&err, dev, OPAL_ENDNAME);
add_token_u8(&err, dev, OPAL_STARTNAME);
add_token_bytestring(&err, dev, opaluid[OPAL_HALF_UID_BOOLEAN_ACE],
OPAL_UID_LENGTH/2);
add_token_u8(&err, dev, 1);
add_token_u8(&err, dev, OPAL_ENDNAME);
add_authority_object_ref(&err, dev, user_uid, sizeof(user_uid));
/*
* Add boolean operator in postfix only with
* two or more authorities being added in ACE
* expresion.
* */
if (u > 0)
add_boolean_object_ref(&err, dev, OPAL_BOOLEAN_OR);
}
add_token_u8(&err, dev, OPAL_ENDLIST);
add_token_u8(&err, dev, OPAL_ENDNAME);
add_token_u8(&err, dev, OPAL_ENDLIST);
add_token_u8(&err, dev, OPAL_ENDNAME);
return err;
}
static int add_user_to_lr(struct opal_dev *dev, void *data)
{
int err;
struct opal_lock_unlock *lkul = data;
const u8 users[] = {
lkul->session.who
};
err = set_lr_boolean_ace(dev,
lkul->l_state == OPAL_RW ?
OPAL_LOCKINGRANGE_ACE_WRLOCKED :
OPAL_LOCKINGRANGE_ACE_RDLOCKED,
lkul->session.opal_key.lr, users,
ARRAY_SIZE(users));
if (err) {
pr_debug("Error building add user to locking range command.\n");
return err;
@ -1827,6 +1994,27 @@ static int add_user_to_lr(struct opal_dev *dev, void *data)
return finalize_and_send(dev, parse_and_check_status);
}
static int add_user_to_lr_ace(struct opal_dev *dev, void *data)
{
int err;
struct opal_lock_unlock *lkul = data;
const u8 users[] = {
OPAL_ADMIN1,
lkul->session.who
};
err = set_lr_boolean_ace(dev, OPAL_LOCKINGRANGE_ACE_START_TO_KEY,
lkul->session.opal_key.lr, users,
ARRAY_SIZE(users));
if (err) {
pr_debug("Error building add user to locking ranges ACEs.\n");
return err;
}
return finalize_and_send(dev, parse_and_check_status);
}
static int lock_unlock_locking_range(struct opal_dev *dev, void *data)
{
u8 lr_buffer[OPAL_UID_LENGTH];
@ -2364,6 +2552,7 @@ static int opal_add_user_to_lr(struct opal_dev *dev,
const struct opal_step steps[] = {
{ start_admin1LSP_opal_session, &lk_unlk->session.opal_key },
{ add_user_to_lr, lk_unlk },
{ add_user_to_lr_ace, lk_unlk },
{ end_opal_session, }
};
int ret;
@ -2580,6 +2769,33 @@ static int opal_setup_locking_range(struct opal_dev *dev,
return ret;
}
static int opal_locking_range_status(struct opal_dev *dev,
struct opal_lr_status *opal_lrst,
void __user *data)
{
const struct opal_step lr_steps[] = {
{ start_auth_opal_session, &opal_lrst->session },
{ locking_range_status, opal_lrst },
{ end_opal_session, }
};
int ret;
mutex_lock(&dev->dev_lock);
setup_opal_dev(dev);
ret = execute_steps(dev, lr_steps, ARRAY_SIZE(lr_steps));
mutex_unlock(&dev->dev_lock);
/* skip session info when copying back to uspace */
if (!ret && copy_to_user(data + offsetof(struct opal_lr_status, range_start),
(void *)opal_lrst + offsetof(struct opal_lr_status, range_start),
sizeof(*opal_lrst) - offsetof(struct opal_lr_status, range_start))) {
pr_debug("Error copying status to userspace\n");
return -EFAULT;
}
return ret;
}
static int opal_set_new_pw(struct opal_dev *dev, struct opal_new_pw *opal_pw)
{
const struct opal_step pw_steps[] = {
@ -2744,6 +2960,26 @@ static int opal_get_status(struct opal_dev *dev, void __user *data)
return 0;
}
static int opal_get_geometry(struct opal_dev *dev, void __user *data)
{
struct opal_geometry geo = {0};
if (check_opal_support(dev))
return -EINVAL;
geo.align = dev->align_required;
geo.logical_block_size = dev->logical_block_size;
geo.alignment_granularity = dev->align;
geo.lowest_aligned_lba = dev->lowest_lba;
if (copy_to_user(data, &geo, sizeof(geo))) {
pr_debug("Error copying geometry data to userspace\n");
return -EFAULT;
}
return 0;
}
int sed_ioctl(struct opal_dev *dev, unsigned int cmd, void __user *arg)
{
void *p;
@ -2814,6 +3050,12 @@ int sed_ioctl(struct opal_dev *dev, unsigned int cmd, void __user *arg)
case IOC_OPAL_GET_STATUS:
ret = opal_get_status(dev, arg);
break;
case IOC_OPAL_GET_LR_STATUS:
ret = opal_locking_range_status(dev, p, arg);
break;
case IOC_OPAL_GET_GEOMETRY:
ret = opal_get_geometry(dev, arg);
break;
default:
break;
}

17
drivers/block/Kconfig
View File

@ -385,6 +385,23 @@ config BLK_DEV_UBLK
can handle batch more effectively, but task_work_add() isn't exported
for module, so ublk has to be built to kernel.
config BLKDEV_UBLK_LEGACY_OPCODES
bool "Support legacy command opcode"
depends on BLK_DEV_UBLK
default y
help
ublk driver started to take plain command encoding, which turns out
one bad way. The traditional ioctl command opcode encodes more
info and basically defines each code uniquely, so opcode conflict
is avoided, and driver can handle wrong command easily, meantime it
may help security subsystem to audit io_uring command.
Say Y if your application still uses legacy command opcode.
Say N if you don't want to support legacy command opcode. It is
suggested to enable N if your application(ublk server) switches to
ioctl command encoding.
source "drivers/block/rnbd/Kconfig"
endif # BLK_DEV

13
drivers/block/drbd/drbd_actlog.c
View File

@ -735,8 +735,9 @@ static bool update_rs_extent(struct drbd_device *device,
return false;
}
void drbd_advance_rs_marks(struct drbd_device *device, unsigned long still_to_go)
void drbd_advance_rs_marks(struct drbd_peer_device *peer_device, unsigned long still_to_go)
{
struct drbd_device *device = peer_device->device;
unsigned long now = jiffies;
unsigned long last = device->rs_mark_time[device->rs_last_mark];
int next = (device->rs_last_mark + 1) % DRBD_SYNC_MARKS;
@ -819,7 +820,7 @@ static int update_sync_bits(struct drbd_device *device,
if (mode == SET_IN_SYNC) {
unsigned long still_to_go = drbd_bm_total_weight(device);
bool rs_is_done = (still_to_go <= device->rs_failed);
drbd_advance_rs_marks(device, still_to_go);
drbd_advance_rs_marks(first_peer_device(device), still_to_go);
if (cleared || rs_is_done)
maybe_schedule_on_disk_bitmap_update(device, rs_is_done);
} else if (mode == RECORD_RS_FAILED)
@ -843,10 +844,11 @@ static bool plausible_request_size(int size)
* called by worker on C_SYNC_TARGET and receiver on SyncSource.
*
*/
int __drbd_change_sync(struct drbd_device *device, sector_t sector, int size,
int __drbd_change_sync(struct drbd_peer_device *peer_device, sector_t sector, int size,
enum update_sync_bits_mode mode)
{
/* Is called from worker and receiver context _only_ */
struct drbd_device *device = peer_device->device;
unsigned long sbnr, ebnr, lbnr;
unsigned long count = 0;
sector_t esector, nr_sectors;
@ -1009,14 +1011,15 @@ int drbd_rs_begin_io(struct drbd_device *device, sector_t sector)
* tries to set it to BME_LOCKED. Returns 0 upon success, and -EAGAIN
* if there is still application IO going on in this area.
*/
int drbd_try_rs_begin_io(struct drbd_device *device, sector_t sector)
int drbd_try_rs_begin_io(struct drbd_peer_device *peer_device, sector_t sector)
{
struct drbd_device *device = peer_device->device;
unsigned int enr = BM_SECT_TO_EXT(sector);
const unsigned int al_enr = enr*AL_EXT_PER_BM_SECT;
struct lc_element *e;
struct bm_extent *bm_ext;
int i;
bool throttle = drbd_rs_should_slow_down(device, sector, true);
bool throttle = drbd_rs_should_slow_down(peer_device, sector, true);
/* If we need to throttle, a half-locked (only marked BME_NO_WRITES,
* not yet BME_LOCKED) extent needs to be kicked out explicitly if we

13
drivers/block/drbd/drbd_bitmap.c
View File

@ -1216,7 +1216,9 @@ static int bm_rw(struct drbd_device *device, const unsigned int flags, unsigned
* drbd_bm_read() - Read the whole bitmap from its on disk location.
* @device: DRBD device.
*/
int drbd_bm_read(struct drbd_device *device) __must_hold(local)
int drbd_bm_read(struct drbd_device *device,
struct drbd_peer_device *peer_device) __must_hold(local)
{
return bm_rw(device, BM_AIO_READ, 0);
}
@ -1227,7 +1229,8 @@ int drbd_bm_read(struct drbd_device *device) __must_hold(local)
*
* Will only write pages that have changed since last IO.
*/
int drbd_bm_write(struct drbd_device *device) __must_hold(local)
int drbd_bm_write(struct drbd_device *device,
struct drbd_peer_device *peer_device) __must_hold(local)
{
return bm_rw(device, 0, 0);
}
@ -1238,7 +1241,8 @@ int drbd_bm_write(struct drbd_device *device) __must_hold(local)
*
* Will write all pages.
*/
int drbd_bm_write_all(struct drbd_device *device) __must_hold(local)
int drbd_bm_write_all(struct drbd_device *device,
struct drbd_peer_device *peer_device) __must_hold(local)
{
return bm_rw(device, BM_AIO_WRITE_ALL_PAGES, 0);
}
@ -1264,7 +1268,8 @@ int drbd_bm_write_lazy(struct drbd_device *device, unsigned upper_idx) __must_ho
* verify is aborted due to a failed peer disk, while local IO continues, or
* pending resync acks are still being processed.
*/
int drbd_bm_write_copy_pages(struct drbd_device *device) __must_hold(local)
int drbd_bm_write_copy_pages(struct drbd_device *device,
struct drbd_peer_device *peer_device) __must_hold(local)
{
return bm_rw(device, BM_AIO_COPY_PAGES, 0);
}

120
drivers/block/drbd/drbd_int.h
View File

@ -66,6 +66,7 @@ extern int drbd_proc_details;
struct drbd_device;
struct drbd_connection;
struct drbd_peer_device;
/* Defines to control fault insertion */
enum {
@ -126,8 +127,8 @@ struct bm_xfer_ctx {
unsigned bytes[2];
};
extern void INFO_bm_xfer_stats(struct drbd_device *device,
const char *direction, struct bm_xfer_ctx *c);
extern void INFO_bm_xfer_stats(struct drbd_peer_device *peer_device,
const char *direction, struct bm_xfer_ctx *c);
static inline void bm_xfer_ctx_bit_to_word_offset(struct bm_xfer_ctx *c)
{
@ -541,9 +542,10 @@ struct drbd_md_io {
struct bm_io_work {
struct drbd_work w;
struct drbd_peer_device *peer_device;
char *why;
enum bm_flag flags;
int (*io_fn)(struct drbd_device *device);
int (*io_fn)(struct drbd_device *device, struct drbd_peer_device *peer_device);
void (*done)(struct drbd_device *device, int rv);
};
@ -1041,7 +1043,7 @@ extern int drbd_send_drequest_csum(struct drbd_peer_device *, sector_t sector,
enum drbd_packet cmd);
extern int drbd_send_ov_request(struct drbd_peer_device *, sector_t sector, int size);
extern int drbd_send_bitmap(struct drbd_device *device);
extern int drbd_send_bitmap(struct drbd_device *device, struct drbd_peer_device *peer_device);
extern void drbd_send_sr_reply(struct drbd_peer_device *, enum drbd_state_rv retcode);
extern void conn_send_sr_reply(struct drbd_connection *connection, enum drbd_state_rv retcode);
extern int drbd_send_rs_deallocated(struct drbd_peer_device *, struct drbd_peer_request *);
@ -1065,17 +1067,22 @@ extern void drbd_md_clear_flag(struct drbd_device *device, int flags)__must_hold
extern int drbd_md_test_flag(struct drbd_backing_dev *, int);
extern void drbd_md_mark_dirty(struct drbd_device *device);
extern void drbd_queue_bitmap_io(struct drbd_device *device,
int (*io_fn)(struct drbd_device *),
int (*io_fn)(struct drbd_device *, struct drbd_peer_device *),
void (*done)(struct drbd_device *, int),
char *why, enum bm_flag flags);
char *why, enum bm_flag flags,
struct drbd_peer_device *peer_device);
extern int drbd_bitmap_io(struct drbd_device *device,
int (*io_fn)(struct drbd_device *),
char *why, enum bm_flag flags);
int (*io_fn)(struct drbd_device *, struct drbd_peer_device *),
char *why, enum bm_flag flags,
struct drbd_peer_device *peer_device);
extern int drbd_bitmap_io_from_worker(struct drbd_device *device,
int (*io_fn)(struct drbd_device *),
char *why, enum bm_flag flags);
extern int drbd_bmio_set_n_write(struct drbd_device *device) __must_hold(local);
extern int drbd_bmio_clear_n_write(struct drbd_device *device) __must_hold(local);
int (*io_fn)(struct drbd_device *, struct drbd_peer_device *),
char *why, enum bm_flag flags,
struct drbd_peer_device *peer_device);
extern int drbd_bmio_set_n_write(struct drbd_device *device,
struct drbd_peer_device *peer_device) __must_hold(local);
extern int drbd_bmio_clear_n_write(struct drbd_device *device,
struct drbd_peer_device *peer_device) __must_hold(local);
/* Meta data layout
*
@ -1284,14 +1291,18 @@ extern void _drbd_bm_set_bits(struct drbd_device *device,
const unsigned long s, const unsigned long e);
extern int drbd_bm_test_bit(struct drbd_device *device, unsigned long bitnr);
extern int drbd_bm_e_weight(struct drbd_device *device, unsigned long enr);
extern int drbd_bm_read(struct drbd_device *device) __must_hold(local);
extern int drbd_bm_read(struct drbd_device *device,
struct drbd_peer_device *peer_device) __must_hold(local);
extern void drbd_bm_mark_for_writeout(struct drbd_device *device, int page_nr);
extern int drbd_bm_write(struct drbd_device *device) __must_hold(local);
extern int drbd_bm_write(struct drbd_device *device,
struct drbd_peer_device *peer_device) __must_hold(local);
extern void drbd_bm_reset_al_hints(struct drbd_device *device) __must_hold(local);
extern int drbd_bm_write_hinted(struct drbd_device *device) __must_hold(local);
extern int drbd_bm_write_lazy(struct drbd_device *device, unsigned upper_idx) __must_hold(local);
extern int drbd_bm_write_all(struct drbd_device *device) __must_hold(local);
extern int drbd_bm_write_copy_pages(struct drbd_device *device) __must_hold(local);
extern int drbd_bm_write_all(struct drbd_device *device,
struct drbd_peer_device *peer_device) __must_hold(local);
extern int drbd_bm_write_copy_pages(struct drbd_device *device,
struct drbd_peer_device *peer_device) __must_hold(local);
extern size_t drbd_bm_words(struct drbd_device *device);
extern unsigned long drbd_bm_bits(struct drbd_device *device);
extern sector_t drbd_bm_capacity(struct drbd_device *device);
@ -1422,21 +1433,24 @@ void drbd_resync_after_changed(struct drbd_device *device);
extern void drbd_start_resync(struct drbd_device *device, enum drbd_conns side);
extern void resume_next_sg(struct drbd_device *device);
extern void suspend_other_sg(struct drbd_device *device);
extern int drbd_resync_finished(struct drbd_device *device);
extern int drbd_resync_finished(struct drbd_peer_device *peer_device);
/* maybe rather drbd_main.c ? */
extern void *drbd_md_get_buffer(struct drbd_device *device, const char *intent);
extern void drbd_md_put_buffer(struct drbd_device *device);
extern int drbd_md_sync_page_io(struct drbd_device *device,
struct drbd_backing_dev *bdev, sector_t sector, enum req_op op);
extern void drbd_ov_out_of_sync_found(struct drbd_device *, sector_t, int);
extern void drbd_ov_out_of_sync_found(struct drbd_peer_device *peer_device,
sector_t sector, int size);
extern void wait_until_done_or_force_detached(struct drbd_device *device,
struct drbd_backing_dev *bdev, unsigned int *done);
extern void drbd_rs_controller_reset(struct drbd_device *device);
extern void drbd_rs_controller_reset(struct drbd_peer_device *peer_device);
static inline void ov_out_of_sync_print(struct drbd_device *device)
static inline void ov_out_of_sync_print(struct drbd_peer_device *peer_device)
{
struct drbd_device *device = peer_device->device;
if (device->ov_last_oos_size) {
drbd_err(device, "Out of sync: start=%llu, size=%lu (sectors)\n",
drbd_err(peer_device, "Out of sync: start=%llu, size=%lu (sectors)\n",
(unsigned long long)device->ov_last_oos_start,
(unsigned long)device->ov_last_oos_size);
}
@ -1475,7 +1489,7 @@ extern int drbd_ack_receiver(struct drbd_thread *thi);
extern void drbd_send_ping_wf(struct work_struct *ws);
extern void drbd_send_acks_wf(struct work_struct *ws);
extern bool drbd_rs_c_min_rate_throttle(struct drbd_device *device);
extern bool drbd_rs_should_slow_down(struct drbd_device *device, sector_t sector,
extern bool drbd_rs_should_slow_down(struct drbd_peer_device *peer_device, sector_t sector,
bool throttle_if_app_is_waiting);
extern int drbd_submit_peer_request(struct drbd_peer_request *peer_req);
extern int drbd_free_peer_reqs(struct drbd_device *, struct list_head *);
@ -1531,22 +1545,22 @@ extern void drbd_al_begin_io(struct drbd_device *device, struct drbd_interval *i
extern void drbd_al_complete_io(struct drbd_device *device, struct drbd_interval *i);
extern void drbd_rs_complete_io(struct drbd_device *device, sector_t sector);
extern int drbd_rs_begin_io(struct drbd_device *device, sector_t sector);
extern int drbd_try_rs_begin_io(struct drbd_device *device, sector_t sector);
extern int drbd_try_rs_begin_io(struct drbd_peer_device *peer_device, sector_t sector);
extern void drbd_rs_cancel_all(struct drbd_device *device);
extern int drbd_rs_del_all(struct drbd_device *device);
extern void drbd_rs_failed_io(struct drbd_device *device,
extern void drbd_rs_failed_io(struct drbd_peer_device *peer_device,
sector_t sector, int size);
extern void drbd_advance_rs_marks(struct drbd_device *device, unsigned long still_to_go);
extern void drbd_advance_rs_marks(struct drbd_peer_device *peer_device, unsigned long still_to_go);
enum update_sync_bits_mode { RECORD_RS_FAILED, SET_OUT_OF_SYNC, SET_IN_SYNC };
extern int __drbd_change_sync(struct drbd_device *device, sector_t sector, int size,
extern int __drbd_change_sync(struct drbd_peer_device *peer_device, sector_t sector, int size,
enum update_sync_bits_mode mode);
#define drbd_set_in_sync(device, sector, size) \
__drbd_change_sync(device, sector, size, SET_IN_SYNC)
#define drbd_set_out_of_sync(device, sector, size) \
__drbd_change_sync(device, sector, size, SET_OUT_OF_SYNC)
#define drbd_rs_failed_io(device, sector, size) \
__drbd_change_sync(device, sector, size, RECORD_RS_FAILED)
#define drbd_set_in_sync(peer_device, sector, size) \
__drbd_change_sync(peer_device, sector, size, SET_IN_SYNC)
#define drbd_set_out_of_sync(peer_device, sector, size) \
__drbd_change_sync(peer_device, sector, size, SET_OUT_OF_SYNC)
#define drbd_rs_failed_io(peer_device, sector, size) \
__drbd_change_sync(peer_device, sector, size, RECORD_RS_FAILED)
extern void drbd_al_shrink(struct drbd_device *device);
extern int drbd_al_initialize(struct drbd_device *, void *);
@ -1918,18 +1932,14 @@ static inline void inc_ap_pending(struct drbd_device *device)
atomic_inc(&device->ap_pending_cnt);
}
#define ERR_IF_CNT_IS_NEGATIVE(which, func, line) \
if (atomic_read(&device->which) < 0) \
drbd_err(device, "in %s:%d: " #which " = %d < 0 !\n", \
func, line, \
atomic_read(&device->which))
#define dec_ap_pending(device) _dec_ap_pending(device, __func__, __LINE__)
static inline void _dec_ap_pending(struct drbd_device *device, const char *func, int line)
#define dec_ap_pending(device) ((void)expect((device), __dec_ap_pending(device) >= 0))
static inline int __dec_ap_pending(struct drbd_device *device)
{
if (atomic_dec_and_test(&device->ap_pending_cnt))
int ap_pending_cnt = atomic_dec_return(&device->ap_pending_cnt);
if (ap_pending_cnt == 0)
wake_up(&device->misc_wait);
ERR_IF_CNT_IS_NEGATIVE(ap_pending_cnt, func, line);
return ap_pending_cnt;
}
/* counts how many resync-related answers we still expect from the peer
@ -1938,16 +1948,16 @@ static inline void _dec_ap_pending(struct drbd_device *device, const char *func,
* C_SYNC_SOURCE sends P_RS_DATA_REPLY (and expects P_WRITE_ACK with ID_SYNCER)
* (or P_NEG_ACK with ID_SYNCER)
*/
static inline void inc_rs_pending(struct drbd_device *device)
static inline void inc_rs_pending(struct drbd_peer_device *peer_device)
{
atomic_inc(&device->rs_pending_cnt);
atomic_inc(&peer_device->device->rs_pending_cnt);
}
#define dec_rs_pending(device) _dec_rs_pending(device, __func__, __LINE__)
static inline void _dec_rs_pending(struct drbd_device *device, const char *func, int line)
#define dec_rs_pending(peer_device) \
((void)expect((peer_device), __dec_rs_pending(peer_device) >= 0))
static inline int __dec_rs_pending(struct drbd_peer_device *peer_device)
{
atomic_dec(&device->rs_pending_cnt);
ERR_IF_CNT_IS_NEGATIVE(rs_pending_cnt, func, line);
return atomic_dec_return(&peer_device->device->rs_pending_cnt);
}
/* counts how many answers we still need to send to the peer.
@ -1964,18 +1974,16 @@ static inline void inc_unacked(struct drbd_device *device)
atomic_inc(&device->unacked_cnt);
}
#define dec_unacked(device) _dec_unacked(device, __func__, __LINE__)
static inline void _dec_unacked(struct drbd_device *device, const char *func, int line)
#define dec_unacked(device) ((void)expect(device, __dec_unacked(device) >= 0))
static inline int __dec_unacked(struct drbd_device *device)
{
atomic_dec(&device->unacked_cnt);
ERR_IF_CNT_IS_NEGATIVE(unacked_cnt, func, line);
return atomic_dec_return(&device->unacked_cnt);
}
#define sub_unacked(device, n) _sub_unacked(device, n, __func__, __LINE__)
static inline void _sub_unacked(struct drbd_device *device, int n, const char *func, int line)
#define sub_unacked(device, n) ((void)expect(device, __sub_unacked(device) >= 0))
static inline int __sub_unacked(struct drbd_device *device, int n)
{
atomic_sub(n, &device->unacked_cnt);
ERR_IF_CNT_IS_NEGATIVE(unacked_cnt, func, line);
return atomic_sub_return(n, &device->unacked_cnt);
}
static inline bool is_sync_target_state(enum drbd_conns connection_state)

72
drivers/block/drbd/drbd_main.c
View File

@ -231,9 +231,11 @@ void tl_release(struct drbd_connection *connection, unsigned int barrier_nr,
}
req = list_prepare_entry(tmp, &connection->transfer_log, tl_requests);
list_for_each_entry_safe_from(req, r, &connection->transfer_log, tl_requests) {
struct drbd_peer_device *peer_device;
if (req->epoch != expect_epoch)
break;
_req_mod(req, BARRIER_ACKED);
peer_device = conn_peer_device(connection, req->device->vnr);
_req_mod(req, BARRIER_ACKED, peer_device);
}
spin_unlock_irq(&connection->resource->req_lock);
@ -256,10 +258,13 @@ void tl_release(struct drbd_connection *connection, unsigned int barrier_nr,
/* must hold resource->req_lock */
void _tl_restart(struct drbd_connection *connection, enum drbd_req_event what)
{
struct drbd_peer_device *peer_device;
struct drbd_request *req, *r;
list_for_each_entry_safe(req, r, &connection->transfer_log, tl_requests)
_req_mod(req, what);
list_for_each_entry_safe(req, r, &connection->transfer_log, tl_requests) {
peer_device = conn_peer_device(connection, req->device->vnr);
_req_mod(req, what, peer_device);
}
}
void tl_restart(struct drbd_connection *connection, enum drbd_req_event what)
@ -297,7 +302,7 @@ void tl_abort_disk_io(struct drbd_device *device)
continue;
if (req->device != device)
continue;
_req_mod(req, ABORT_DISK_IO);
_req_mod(req, ABORT_DISK_IO, NULL);
}
spin_unlock_irq(&connection->resource->req_lock);
}
@ -1198,10 +1203,11 @@ static int fill_bitmap_rle_bits(struct drbd_device *device,
* code upon failure.
*/
static int
send_bitmap_rle_or_plain(struct drbd_device *device, struct bm_xfer_ctx *c)
send_bitmap_rle_or_plain(struct drbd_peer_device *peer_device, struct bm_xfer_ctx *c)
{
struct drbd_socket *sock = &first_peer_device(device)->connection->data;
unsigned int header_size = drbd_header_size(first_peer_device(device)->connection);
struct drbd_device *device = peer_device->device;
struct drbd_socket *sock = &peer_device->connection->data;
unsigned int header_size = drbd_header_size(peer_device->connection);
struct p_compressed_bm *p = sock->sbuf + header_size;
int len, err;
@ -1212,7 +1218,7 @@ send_bitmap_rle_or_plain(struct drbd_device *device, struct bm_xfer_ctx *c)
if (len) {
dcbp_set_code(p, RLE_VLI_Bits);
err = __send_command(first_peer_device(device)->connection, device->vnr, sock,
err = __send_command(peer_device->connection, device->vnr, sock,
P_COMPRESSED_BITMAP, sizeof(*p) + len,
NULL, 0);
c->packets[0]++;
@ -1233,7 +1239,8 @@ send_bitmap_rle_or_plain(struct drbd_device *device, struct bm_xfer_ctx *c)
len = num_words * sizeof(*p);
if (len)
drbd_bm_get_lel(device, c->word_offset, num_words, p);
err = __send_command(first_peer_device(device)->connection, device->vnr, sock, P_BITMAP, len, NULL, 0);
err = __send_command(peer_device->connection, device->vnr, sock, P_BITMAP,
len, NULL, 0);
c->word_offset += num_words;
c->bit_offset = c->word_offset * BITS_PER_LONG;
@ -1245,7 +1252,7 @@ send_bitmap_rle_or_plain(struct drbd_device *device, struct bm_xfer_ctx *c)
}
if (!err) {
if (len == 0) {
INFO_bm_xfer_stats(device, "send", c);
INFO_bm_xfer_stats(peer_device, "send", c);
return 0;
} else
return 1;
@ -1254,7 +1261,8 @@ send_bitmap_rle_or_plain(struct drbd_device *device, struct bm_xfer_ctx *c)
}
/* See the comment at receive_bitmap() */
static int _drbd_send_bitmap(struct drbd_device *device)
static int _drbd_send_bitmap(struct drbd_device *device,
struct drbd_peer_device *peer_device)
{
struct bm_xfer_ctx c;
int err;
@ -1266,7 +1274,7 @@ static int _drbd_send_bitmap(struct drbd_device *device)
if (drbd_md_test_flag(device->ldev, MDF_FULL_SYNC)) {
drbd_info(device, "Writing the whole bitmap, MDF_FullSync was set.\n");
drbd_bm_set_all(device);
if (drbd_bm_write(device)) {
if (drbd_bm_write(device, peer_device)) {
/* write_bm did fail! Leave full sync flag set in Meta P_DATA
* but otherwise process as per normal - need to tell other
* side that a full resync is required! */
@ -1285,20 +1293,20 @@ static int _drbd_send_bitmap(struct drbd_device *device)
};
do {
err = send_bitmap_rle_or_plain(device, &c);
err = send_bitmap_rle_or_plain(peer_device, &c);
} while (err > 0);
return err == 0;
}
int drbd_send_bitmap(struct drbd_device *device)
int drbd_send_bitmap(struct drbd_device *device, struct drbd_peer_device *peer_device)
{
struct drbd_socket *sock = &first_peer_device(device)->connection->data;
struct drbd_socket *sock = &peer_device->connection->data;
int err = -1;
mutex_lock(&sock->mutex);
if (sock->socket)
err = !_drbd_send_bitmap(device);
err = !_drbd_send_bitmap(device, peer_device);
mutex_unlock(&sock->mutex);
return err;
}
@ -3406,7 +3414,9 @@ void drbd_uuid_set_bm(struct drbd_device *device, u64 val) __must_hold(local)
*
* Sets all bits in the bitmap and writes the whole bitmap to stable storage.
*/
int drbd_bmio_set_n_write(struct drbd_device *device) __must_hold(local)
int drbd_bmio_set_n_write(struct drbd_device *device,
struct drbd_peer_device *peer_device) __must_hold(local)
{
int rv = -EIO;
@ -3414,7 +3424,7 @@ int drbd_bmio_set_n_write(struct drbd_device *device) __must_hold(local)
drbd_md_sync(device);
drbd_bm_set_all(device);
rv = drbd_bm_write(device);
rv = drbd_bm_write(device, peer_device);
if (!rv) {
drbd_md_clear_flag(device, MDF_FULL_SYNC);
@ -3430,11 +3440,13 @@ int drbd_bmio_set_n_write(struct drbd_device *device) __must_hold(local)
*
* Clears all bits in the bitmap and writes the whole bitmap to stable storage.
*/
int drbd_bmio_clear_n_write(struct drbd_device *device) __must_hold(local)
int drbd_bmio_clear_n_write(struct drbd_device *device,
struct drbd_peer_device *peer_device) __must_hold(local)
{
drbd_resume_al(device);
drbd_bm_clear_all(device);
return drbd_bm_write(device);
return drbd_bm_write(device, peer_device);
}
static int w_bitmap_io(struct drbd_work *w, int unused)
@ -3453,7 +3465,7 @@ static int w_bitmap_io(struct drbd_work *w, int unused)
if (get_ldev(device)) {
drbd_bm_lock(device, work->why, work->flags);
rv = work->io_fn(device);
rv = work->io_fn(device, work->peer_device);
drbd_bm_unlock(device);
put_ldev(device);
}
@ -3488,11 +3500,12 @@ static int w_bitmap_io(struct drbd_work *w, int unused)
* put_ldev().
*/
void drbd_queue_bitmap_io(struct drbd_device *device,
int (*io_fn)(struct drbd_device *),
int (*io_fn)(struct drbd_device *, struct drbd_peer_device *),
void (*done)(struct drbd_device *, int),
char *why, enum bm_flag flags)
char *why, enum bm_flag flags,
struct drbd_peer_device *peer_device)
{
D_ASSERT(device, current == first_peer_device(device)->connection->worker.task);
D_ASSERT(device, current == peer_device->connection->worker.task);
D_ASSERT(device, !test_bit(BITMAP_IO_QUEUED, &device->flags));
D_ASSERT(device, !test_bit(BITMAP_IO, &device->flags));
@ -3501,6 +3514,7 @@ void drbd_queue_bitmap_io(struct drbd_device *device,
drbd_err(device, "FIXME going to queue '%s' but '%s' still pending?\n",
why, device->bm_io_work.why);
device->bm_io_work.peer_device = peer_device;
device->bm_io_work.io_fn = io_fn;
device->bm_io_work.done = done;
device->bm_io_work.why = why;
@ -3512,7 +3526,7 @@ void drbd_queue_bitmap_io(struct drbd_device *device,
* application IO does not conflict anyways. */
if (flags == BM_LOCKED_CHANGE_ALLOWED || atomic_read(&device->ap_bio_cnt) == 0) {
if (!test_and_set_bit(BITMAP_IO_QUEUED, &device->flags))
drbd_queue_work(&first_peer_device(device)->connection->sender_work,
drbd_queue_work(&peer_device->connection->sender_work,
&device->bm_io_work.w);
}
spin_unlock_irq(&device->resource->req_lock);
@ -3528,8 +3542,10 @@ void drbd_queue_bitmap_io(struct drbd_device *device,
* freezes application IO while that the actual IO operations runs. This
* functions MAY NOT be called from worker context.
*/
int drbd_bitmap_io(struct drbd_device *device, int (*io_fn)(struct drbd_device *),
char *why, enum bm_flag flags)
int drbd_bitmap_io(struct drbd_device *device,
int (*io_fn)(struct drbd_device *, struct drbd_peer_device *),
char *why, enum bm_flag flags,
struct drbd_peer_device *peer_device)
{
/* Only suspend io, if some operation is supposed to be locked out */
const bool do_suspend_io = flags & (BM_DONT_CLEAR|BM_DONT_SET|BM_DONT_TEST);
@ -3541,7 +3557,7 @@ int drbd_bitmap_io(struct drbd_device *device, int (*io_fn)(struct drbd_device *
drbd_suspend_io(device);
drbd_bm_lock(device, why, flags);
rv = io_fn(device);
rv = io_fn(device, peer_device);
drbd_bm_unlock(device);
if (do_suspend_io)

19
drivers/block/drbd/drbd_nl.c
View File

@ -1053,7 +1053,7 @@ drbd_determine_dev_size(struct drbd_device *device, enum dds_flags flags, struct
la_size_changed ? "size changed" : "md moved");
/* next line implicitly does drbd_suspend_io()+drbd_resume_io() */
drbd_bitmap_io(device, md_moved ? &drbd_bm_write_all : &drbd_bm_write,
"size changed", BM_LOCKED_MASK);
"size changed", BM_LOCKED_MASK, NULL);
/* on-disk bitmap and activity log is authoritative again
* (unless there was an IO error meanwhile...) */
@ -2027,13 +2027,15 @@ int drbd_adm_attach(struct sk_buff *skb, struct genl_info *info)
drbd_info(device, "Assuming that all blocks are out of sync "
"(aka FullSync)\n");
if (drbd_bitmap_io(device, &drbd_bmio_set_n_write,
"set_n_write from attaching", BM_LOCKED_MASK)) {
"set_n_write from attaching", BM_LOCKED_MASK,
NULL)) {
retcode = ERR_IO_MD_DISK;
goto force_diskless_dec;
}
} else {
if (drbd_bitmap_io(device, &drbd_bm_read,
"read from attaching", BM_LOCKED_MASK)) {
"read from attaching", BM_LOCKED_MASK,
NULL)) {
retcode = ERR_IO_MD_DISK;
goto force_diskless_dec;
}
@ -2972,7 +2974,7 @@ int drbd_adm_invalidate(struct sk_buff *skb, struct genl_info *info)
retcode = drbd_request_state(device, NS(disk, D_INCONSISTENT));
if (retcode >= SS_SUCCESS) {
if (drbd_bitmap_io(device, &drbd_bmio_set_n_write,
"set_n_write from invalidate", BM_LOCKED_MASK))
"set_n_write from invalidate", BM_LOCKED_MASK, NULL))
retcode = ERR_IO_MD_DISK;
}
} else
@ -3005,11 +3007,12 @@ static int drbd_adm_simple_request_state(struct sk_buff *skb, struct genl_info *
return 0;
}
static int drbd_bmio_set_susp_al(struct drbd_device *device) __must_hold(local)
static int drbd_bmio_set_susp_al(struct drbd_device *device,
struct drbd_peer_device *peer_device) __must_hold(local)
{
int rv;
rv = drbd_bmio_set_n_write(device);
rv = drbd_bmio_set_n_write(device, peer_device);
drbd_suspend_al(device);
return rv;
}
@ -3052,7 +3055,7 @@ int drbd_adm_invalidate_peer(struct sk_buff *skb, struct genl_info *info)
if (retcode >= SS_SUCCESS) {
if (drbd_bitmap_io(device, &drbd_bmio_set_susp_al,
"set_n_write from invalidate_peer",
BM_LOCKED_SET_ALLOWED))
BM_LOCKED_SET_ALLOWED, NULL))
retcode = ERR_IO_MD_DISK;
}
} else
@ -4148,7 +4151,7 @@ int drbd_adm_new_c_uuid(struct sk_buff *skb, struct genl_info *info)
if (args.clear_bm) {
err = drbd_bitmap_io(device, &drbd_bmio_clear_n_write,
"clear_n_write from new_c_uuid", BM_LOCKED_MASK);
"clear_n_write from new_c_uuid", BM_LOCKED_MASK, NULL);
if (err) {
drbd_err(device, "Writing bitmap failed with %d\n", err);
retcode = ERR_IO_MD_DISK;

102
drivers/block/drbd/drbd_receiver.c
View File

@ -2044,11 +2044,11 @@ static int e_end_resync_block(struct drbd_work *w, int unused)
D_ASSERT(device, drbd_interval_empty(&peer_req->i));
if (likely((peer_req->flags & EE_WAS_ERROR) == 0)) {
drbd_set_in_sync(device, sector, peer_req->i.size);
drbd_set_in_sync(peer_device, sector, peer_req->i.size);
err = drbd_send_ack(peer_device, P_RS_WRITE_ACK, peer_req);
} else {
/* Record failure to sync */
drbd_rs_failed_io(device, sector, peer_req->i.size);
drbd_rs_failed_io(peer_device, sector, peer_req->i.size);
err = drbd_send_ack(peer_device, P_NEG_ACK, peer_req);
}
@ -2067,7 +2067,7 @@ static int recv_resync_read(struct drbd_peer_device *peer_device, sector_t secto
if (!peer_req)
goto fail;
dec_rs_pending(device);
dec_rs_pending(peer_device);
inc_unacked(device);
/* corresponding dec_unacked() in e_end_resync_block()
@ -2138,7 +2138,7 @@ static int receive_DataReply(struct drbd_connection *connection, struct packet_i
err = recv_dless_read(peer_device, req, sector, pi->size);
if (!err)
req_mod(req, DATA_RECEIVED);
req_mod(req, DATA_RECEIVED, peer_device);
/* else: nothing. handled from drbd_disconnect...
* I don't think we may complete this just yet
* in case we are "on-disconnect: freeze" */
@ -2196,7 +2196,7 @@ static void restart_conflicting_writes(struct drbd_device *device,
continue;
/* as it is RQ_POSTPONED, this will cause it to
* be queued on the retry workqueue. */
__req_mod(req, CONFLICT_RESOLVED, NULL);
__req_mod(req, CONFLICT_RESOLVED, NULL, NULL);
}
}
@ -2220,7 +2220,7 @@ static int e_end_block(struct drbd_work *w, int cancel)
P_RS_WRITE_ACK : P_WRITE_ACK;
err = drbd_send_ack(peer_device, pcmd, peer_req);
if (pcmd == P_RS_WRITE_ACK)
drbd_set_in_sync(device, sector, peer_req->i.size);
drbd_set_in_sync(peer_device, sector, peer_req->i.size);
} else {
err = drbd_send_ack(peer_device, P_NEG_ACK, peer_req);
/* we expect it to be marked out of sync anyways...
@ -2420,6 +2420,7 @@ static blk_opf_t wire_flags_to_bio(struct drbd_connection *connection, u32 dpf)
static void fail_postponed_requests(struct drbd_device *device, sector_t sector,
unsigned int size)
{
struct drbd_peer_device *peer_device = first_peer_device(device);
struct drbd_interval *i;
repeat:
@ -2433,7 +2434,7 @@ static void fail_postponed_requests(struct drbd_device *device, sector_t sector,
if (!(req->rq_state & RQ_POSTPONED))
continue;
req->rq_state &= ~RQ_POSTPONED;
__req_mod(req, NEG_ACKED, &m);
__req_mod(req, NEG_ACKED, peer_device, &m);
spin_unlock_irq(&device->resource->req_lock);
if (m.bio)
complete_master_bio(device, &m);
@ -2690,7 +2691,7 @@ static int receive_Data(struct drbd_connection *connection, struct packet_info *
if (device->state.pdsk < D_INCONSISTENT) {
/* In case we have the only disk of the cluster, */
drbd_set_out_of_sync(device, peer_req->i.sector, peer_req->i.size);
drbd_set_out_of_sync(peer_device, peer_req->i.sector, peer_req->i.size);
peer_req->flags &= ~EE_MAY_SET_IN_SYNC;
drbd_al_begin_io(device, &peer_req->i);
peer_req->flags |= EE_CALL_AL_COMPLETE_IO;
@ -2729,9 +2730,10 @@ static int receive_Data(struct drbd_connection *connection, struct packet_info *
* The current sync rate used here uses only the most recent two step marks,
* to have a short time average so we can react faster.
*/
bool drbd_rs_should_slow_down(struct drbd_device *device, sector_t sector,
bool drbd_rs_should_slow_down(struct drbd_peer_device *peer_device, sector_t sector,
bool throttle_if_app_is_waiting)
{
struct drbd_device *device = peer_device->device;
struct lc_element *tmp;
bool throttle = drbd_rs_c_min_rate_throttle(device);
@ -2843,7 +2845,7 @@ static int receive_DataRequest(struct drbd_connection *connection, struct packet
break;
case P_OV_REPLY:
verb = 0;
dec_rs_pending(device);
dec_rs_pending(peer_device);
drbd_send_ack_ex(peer_device, P_OV_RESULT, sector, size, ID_IN_SYNC);
break;
default:
@ -2914,7 +2916,7 @@ static int receive_DataRequest(struct drbd_connection *connection, struct packet
/* track progress, we may need to throttle */
atomic_add(size >> 9, &device->rs_sect_in);
peer_req->w.cb = w_e_end_ov_reply;
dec_rs_pending(device);
dec_rs_pending(peer_device);
/* drbd_rs_begin_io done when we sent this request,
* but accounting still needs to be done. */
goto submit_for_resync;
@ -2977,7 +2979,7 @@ static int receive_DataRequest(struct drbd_connection *connection, struct packet
update_receiver_timing_details(connection, drbd_rs_should_slow_down);
if (device->state.peer != R_PRIMARY
&& drbd_rs_should_slow_down(device, sector, false))
&& drbd_rs_should_slow_down(peer_device, sector, false))
schedule_timeout_uninterruptible(HZ/10);
update_receiver_timing_details(connection, drbd_rs_begin_io);
if (drbd_rs_begin_io(device, sector))
@ -3226,10 +3228,11 @@ static void drbd_uuid_dump(struct drbd_device *device, char *text, u64 *uuid,
-1096 requires proto 96
*/
static int drbd_uuid_compare(struct drbd_device *const device, enum drbd_role const peer_role, int *rule_nr) __must_hold(local)
static int drbd_uuid_compare(struct drbd_peer_device *const peer_device,
enum drbd_role const peer_role, int *rule_nr) __must_hold(local)
{
struct drbd_peer_device *const peer_device = first_peer_device(device);
struct drbd_connection *const connection = peer_device ? peer_device->connection : NULL;
struct drbd_connection *const connection = peer_device->connection;
struct drbd_device *device = peer_device->device;
u64 self, peer;
int i, j;
@ -3465,7 +3468,7 @@ static enum drbd_conns drbd_sync_handshake(struct drbd_peer_device *peer_device,
drbd_uuid_dump(device, "peer", device->p_uuid,
device->p_uuid[UI_SIZE], device->p_uuid[UI_FLAGS]);
hg = drbd_uuid_compare(device, peer_role, &rule_nr);
hg = drbd_uuid_compare(peer_device, peer_role, &rule_nr);
spin_unlock_irq(&device->ldev->md.uuid_lock);
drbd_info(device, "uuid_compare()=%d by rule %d\n", hg, rule_nr);
@ -3591,7 +3594,7 @@ static enum drbd_conns drbd_sync_handshake(struct drbd_peer_device *peer_device,
if (abs(hg) >= 2) {
drbd_info(device, "Writing the whole bitmap, full sync required after drbd_sync_handshake.\n");
if (drbd_bitmap_io(device, &drbd_bmio_set_n_write, "set_n_write from sync_handshake",
BM_LOCKED_SET_ALLOWED))
BM_LOCKED_SET_ALLOWED, NULL))
return C_MASK;
}
@ -4270,7 +4273,7 @@ static int receive_uuids(struct drbd_connection *connection, struct packet_info
drbd_info(device, "Accepted new current UUID, preparing to skip initial sync\n");
drbd_bitmap_io(device, &drbd_bmio_clear_n_write,
"clear_n_write from receive_uuids",
BM_LOCKED_TEST_ALLOWED);
BM_LOCKED_TEST_ALLOWED, NULL);
_drbd_uuid_set(device, UI_CURRENT, p_uuid[UI_CURRENT]);
_drbd_uuid_set(device, UI_BITMAP, 0);
_drbd_set_state(_NS2(device, disk, D_UP_TO_DATE, pdsk, D_UP_TO_DATE),
@ -4448,7 +4451,7 @@ static int receive_state(struct drbd_connection *connection, struct packet_info
else if (os.conn >= C_SYNC_SOURCE &&
peer_state.conn == C_CONNECTED) {
if (drbd_bm_total_weight(device) <= device->rs_failed)
drbd_resync_finished(device);
drbd_resync_finished(peer_device);
return 0;
}
}
@ -4456,8 +4459,8 @@ static int receive_state(struct drbd_connection *connection, struct packet_info
/* explicit verify finished notification, stop sector reached. */
if (os.conn == C_VERIFY_T && os.disk == D_UP_TO_DATE &&
peer_state.conn == C_CONNECTED && real_peer_disk == D_UP_TO_DATE) {
ov_out_of_sync_print(device);
drbd_resync_finished(device);
ov_out_of_sync_print(peer_device);
drbd_resync_finished(peer_device);
return 0;
}
@ -4766,11 +4769,11 @@ decode_bitmap_c(struct drbd_peer_device *peer_device,
return -EIO;
}
void INFO_bm_xfer_stats(struct drbd_device *device,
void INFO_bm_xfer_stats(struct drbd_peer_device *peer_device,
const char *direction, struct bm_xfer_ctx *c)
{
/* what would it take to transfer it "plaintext" */
unsigned int header_size = drbd_header_size(first_peer_device(device)->connection);
unsigned int header_size = drbd_header_size(peer_device->connection);
unsigned int data_size = DRBD_SOCKET_BUFFER_SIZE - header_size;
unsigned int plain =
header_size * (DIV_ROUND_UP(c->bm_words, data_size) + 1) +
@ -4794,7 +4797,7 @@ void INFO_bm_xfer_stats(struct drbd_device *device,
r = 1000;
r = 1000 - r;
drbd_info(device, "%s bitmap stats [Bytes(packets)]: plain %u(%u), RLE %u(%u), "
drbd_info(peer_device, "%s bitmap stats [Bytes(packets)]: plain %u(%u), RLE %u(%u), "
"total %u; compression: %u.%u%%\n",
direction,
c->bytes[1], c->packets[1],
@ -4872,12 +4875,12 @@ static int receive_bitmap(struct drbd_connection *connection, struct packet_info
goto out;
}
INFO_bm_xfer_stats(device, "receive", &c);
INFO_bm_xfer_stats(peer_device, "receive", &c);
if (device->state.conn == C_WF_BITMAP_T) {
enum drbd_state_rv rv;
err = drbd_send_bitmap(device);
err = drbd_send_bitmap(device, peer_device);
if (err)
goto out;
/* Omit CS_ORDERED with this state transition to avoid deadlocks. */
@ -4935,7 +4938,7 @@ static int receive_out_of_sync(struct drbd_connection *connection, struct packet
drbd_conn_str(device->state.conn));
}
drbd_set_out_of_sync(device, be64_to_cpu(p->sector), be32_to_cpu(p->blksize));
drbd_set_out_of_sync(peer_device, be64_to_cpu(p->sector), be32_to_cpu(p->blksize));
return 0;
}
@ -4956,7 +4959,7 @@ static int receive_rs_deallocated(struct drbd_connection *connection, struct pac
sector = be64_to_cpu(p->sector);
size = be32_to_cpu(p->blksize);
dec_rs_pending(device);
dec_rs_pending(peer_device);
if (get_ldev(device)) {
struct drbd_peer_request *peer_req;
@ -5214,7 +5217,7 @@ static int drbd_disconnected(struct drbd_peer_device *peer_device)
if (get_ldev(device)) {
drbd_bitmap_io(device, &drbd_bm_write_copy_pages,
"write from disconnected", BM_LOCKED_CHANGE_ALLOWED);
"write from disconnected", BM_LOCKED_CHANGE_ALLOWED, NULL);
put_ldev(device);
}
@ -5648,22 +5651,23 @@ static int got_IsInSync(struct drbd_connection *connection, struct packet_info *
if (get_ldev(device)) {
drbd_rs_complete_io(device, sector);
drbd_set_in_sync(device, sector, blksize);
drbd_set_in_sync(peer_device, sector, blksize);
/* rs_same_csums is supposed to count in units of BM_BLOCK_SIZE */
device->rs_same_csum += (blksize >> BM_BLOCK_SHIFT);
put_ldev(device);
}
dec_rs_pending(device);
dec_rs_pending(peer_device);
atomic_add(blksize >> 9, &device->rs_sect_in);
return 0;
}
static int
validate_req_change_req_state(struct drbd_device *device, u64 id, sector_t sector,
validate_req_change_req_state(struct drbd_peer_device *peer_device, u64 id, sector_t sector,
struct rb_root *root, const char *func,
enum drbd_req_event what, bool missing_ok)
{
struct drbd_device *device = peer_device->device;
struct drbd_request *req;
struct bio_and_error m;
@ -5673,7 +5677,7 @@ validate_req_change_req_state(struct drbd_device *device, u64 id, sector_t secto
spin_unlock_irq(&device->resource->req_lock);
return -EIO;
}
__req_mod(req, what, &m);
__req_mod(req, what, peer_device, &m);
spin_unlock_irq(&device->resource->req_lock);
if (m.bio)
@ -5698,8 +5702,8 @@ static int got_BlockAck(struct drbd_connection *connection, struct packet_info *
update_peer_seq(peer_device, be32_to_cpu(p->seq_num));
if (p->block_id == ID_SYNCER) {
drbd_set_in_sync(device, sector, blksize);
dec_rs_pending(device);
drbd_set_in_sync(peer_device, sector, blksize);
dec_rs_pending(peer_device);
return 0;
}
switch (pi->cmd) {
@ -5722,7 +5726,7 @@ static int got_BlockAck(struct drbd_connection *connection, struct packet_info *
BUG();
}
return validate_req_change_req_state(device, p->block_id, sector,
return validate_req_change_req_state(peer_device, p->block_id, sector,
&device->write_requests, __func__,
what, false);
}
@ -5744,12 +5748,12 @@ static int got_NegAck(struct drbd_connection *connection, struct packet_info *pi
update_peer_seq(peer_device, be32_to_cpu(p->seq_num));
if (p->block_id == ID_SYNCER) {
dec_rs_pending(device);
drbd_rs_failed_io(device, sector, size);
dec_rs_pending(peer_device);
drbd_rs_failed_io(peer_device, sector, size);
return 0;
}
err = validate_req_change_req_state(device, p->block_id, sector,
err = validate_req_change_req_state(peer_device, p->block_id, sector,
&device->write_requests, __func__,
NEG_ACKED, true);
if (err) {
@ -5758,7 +5762,7 @@ static int got_NegAck(struct drbd_connection *connection, struct packet_info *pi
request is no longer in the collision hash. */
/* In Protocol B we might already have got a P_RECV_ACK
but then get a P_NEG_ACK afterwards. */
drbd_set_out_of_sync(device, sector, size);
drbd_set_out_of_sync(peer_device, sector, size);
}
return 0;
}
@ -5780,7 +5784,7 @@ static int got_NegDReply(struct drbd_connection *connection, struct packet_info
drbd_err(device, "Got NegDReply; Sector %llus, len %u.\n",
(unsigned long long)sector, be32_to_cpu(p->blksize));
return validate_req_change_req_state(device, p->block_id, sector,
return validate_req_change_req_state(peer_device, p->block_id, sector,
&device->read_requests, __func__,
NEG_ACKED, false);
}
@ -5803,13 +5807,13 @@ static int got_NegRSDReply(struct drbd_connection *connection, struct packet_inf
update_peer_seq(peer_device, be32_to_cpu(p->seq_num));
dec_rs_pending(device);
dec_rs_pending(peer_device);
if (get_ldev_if_state(device, D_FAILED)) {
drbd_rs_complete_io(device, sector);
switch (pi->cmd) {
case P_NEG_RS_DREPLY:
drbd_rs_failed_io(device, sector, size);
drbd_rs_failed_io(peer_device, sector, size);
break;
case P_RS_CANCEL:
break;
@ -5866,21 +5870,21 @@ static int got_OVResult(struct drbd_connection *connection, struct packet_info *
update_peer_seq(peer_device, be32_to_cpu(p->seq_num));
if (be64_to_cpu(p->block_id) == ID_OUT_OF_SYNC)
drbd_ov_out_of_sync_found(device, sector, size);
drbd_ov_out_of_sync_found(peer_device, sector, size);
else
ov_out_of_sync_print(device);
ov_out_of_sync_print(peer_device);
if (!get_ldev(device))
return 0;
drbd_rs_complete_io(device, sector);
dec_rs_pending(device);
dec_rs_pending(peer_device);
--device->ov_left;
/* let's advance progress step marks only for every other megabyte */
if ((device->ov_left & 0x200) == 0x200)
drbd_advance_rs_marks(device, device->ov_left);
drbd_advance_rs_marks(peer_device, device->ov_left);
if (device->ov_left == 0) {
dw = kmalloc(sizeof(*dw), GFP_NOIO);
@ -5890,8 +5894,8 @@ static int got_OVResult(struct drbd_connection *connection, struct packet_info *
drbd_queue_work(&peer_device->connection->sender_work, &dw->w);
} else {
drbd_err(device, "kmalloc(dw) failed.");
ov_out_of_sync_print(device);
drbd_resync_finished(device);
ov_out_of_sync_print(peer_device);
drbd_resync_finished(peer_device);
}
}
put_ldev(device);

30
drivers/block/drbd/drbd_req.c
View File

@ -122,12 +122,13 @@ void drbd_req_destroy(struct kref *kref)
* before it even was submitted or sent.
* In that case we do not want to touch the bitmap at all.
*/
struct drbd_peer_device *peer_device = first_peer_device(device);
if ((s & (RQ_POSTPONED|RQ_LOCAL_MASK|RQ_NET_MASK)) != RQ_POSTPONED) {
if (!(s & RQ_NET_OK) || !(s & RQ_LOCAL_OK))
drbd_set_out_of_sync(device, req->i.sector, req->i.size);
drbd_set_out_of_sync(peer_device, req->i.sector, req->i.size);
if ((s & RQ_NET_OK) && (s & RQ_LOCAL_OK) && (s & RQ_NET_SIS))
drbd_set_in_sync(device, req->i.sector, req->i.size);
drbd_set_in_sync(peer_device, req->i.sector, req->i.size);
}
/* one might be tempted to move the drbd_al_complete_io
@ -552,12 +553,15 @@ static inline bool is_pending_write_protocol_A(struct drbd_request *req)
* happen "atomically" within the req_lock,
* and it enforces that we have to think in a very structured manner
* about the "events" that may happen to a request during its life time ...
*
*
* peer_device == NULL means local disk
*/
int __req_mod(struct drbd_request *req, enum drbd_req_event what,
struct drbd_peer_device *peer_device,
struct bio_and_error *m)
{
struct drbd_device *const device = req->device;
struct drbd_peer_device *const peer_device = first_peer_device(device);
struct drbd_connection *const connection = peer_device ? peer_device->connection : NULL;
struct net_conf *nc;
int p, rv = 0;
@ -617,7 +621,7 @@ int __req_mod(struct drbd_request *req, enum drbd_req_event what,
break;
case READ_COMPLETED_WITH_ERROR:
drbd_set_out_of_sync(device, req->i.sector, req->i.size);
drbd_set_out_of_sync(peer_device, req->i.sector, req->i.size);
drbd_report_io_error(device, req);
__drbd_chk_io_error(device, DRBD_READ_ERROR);
fallthrough;
@ -1100,6 +1104,7 @@ static bool drbd_should_send_out_of_sync(union drbd_dev_state s)
static int drbd_process_write_request(struct drbd_request *req)
{
struct drbd_device *device = req->device;
struct drbd_peer_device *peer_device = first_peer_device(device);
int remote, send_oos;
remote = drbd_should_do_remote(device->state);
@ -1115,7 +1120,7 @@ static int drbd_process_write_request(struct drbd_request *req)
/* The only size==0 bios we expect are empty flushes. */
D_ASSERT(device, req->master_bio->bi_opf & REQ_PREFLUSH);
if (remote)
_req_mod(req, QUEUE_AS_DRBD_BARRIER);
_req_mod(req, QUEUE_AS_DRBD_BARRIER, peer_device);
return remote;
}
@ -1125,10 +1130,10 @@ static int drbd_process_write_request(struct drbd_request *req)
D_ASSERT(device, !(remote && send_oos));
if (remote) {
_req_mod(req, TO_BE_SENT);
_req_mod(req, QUEUE_FOR_NET_WRITE);
} else if (drbd_set_out_of_sync(device, req->i.sector, req->i.size))
_req_mod(req, QUEUE_FOR_SEND_OOS);
_req_mod(req, TO_BE_SENT, peer_device);
_req_mod(req, QUEUE_FOR_NET_WRITE, peer_device);
} else if (drbd_set_out_of_sync(peer_device, req->i.sector, req->i.size))
_req_mod(req, QUEUE_FOR_SEND_OOS, peer_device);
return remote;
}
@ -1312,6 +1317,7 @@ static void drbd_update_plug(struct drbd_plug_cb *plug, struct drbd_request *req
static void drbd_send_and_submit(struct drbd_device *device, struct drbd_request *req)
{
struct drbd_resource *resource = device->resource;
struct drbd_peer_device *peer_device = first_peer_device(device);
const int rw = bio_data_dir(req->master_bio);
struct bio_and_error m = { NULL, };
bool no_remote = false;
@ -1375,8 +1381,8 @@ static void drbd_send_and_submit(struct drbd_device *device, struct drbd_request
/* We either have a private_bio, or we can read from remote.
* Otherwise we had done the goto nodata above. */
if (req->private_bio == NULL) {
_req_mod(req, TO_BE_SENT);
_req_mod(req, QUEUE_FOR_NET_READ);
_req_mod(req, TO_BE_SENT, peer_device);
_req_mod(req, QUEUE_FOR_NET_READ, peer_device);
} else
no_remote = true;
}
@ -1397,7 +1403,7 @@ static void drbd_send_and_submit(struct drbd_device *device, struct drbd_request
req->pre_submit_jif = jiffies;
list_add_tail(&req->req_pending_local,
&device->pending_completion[rw == WRITE]);
_req_mod(req, TO_BE_SUBMITTED);
_req_mod(req, TO_BE_SUBMITTED, NULL);
/* but we need to give up the spinlock to submit */
submit_private_bio = true;
} else if (no_remote) {

11
drivers/block/drbd/drbd_req.h
View File

@ -267,6 +267,7 @@ struct bio_and_error {
extern void start_new_tl_epoch(struct drbd_connection *connection);
extern void drbd_req_destroy(struct kref *kref);
extern int __req_mod(struct drbd_request *req, enum drbd_req_event what,
struct drbd_peer_device *peer_device,
struct bio_and_error *m);
extern void complete_master_bio(struct drbd_device *device,
struct bio_and_error *m);
@ -280,14 +281,15 @@ extern void drbd_restart_request(struct drbd_request *req);
/* use this if you don't want to deal with calling complete_master_bio()
* outside the spinlock, e.g. when walking some list on cleanup. */
static inline int _req_mod(struct drbd_request *req, enum drbd_req_event what)
static inline int _req_mod(struct drbd_request *req, enum drbd_req_event what,
struct drbd_peer_device *peer_device)
{
struct drbd_device *device = req->device;
struct bio_and_error m;
int rv;
/* __req_mod possibly frees req, do not touch req after that! */
rv = __req_mod(req, what, &m);
rv = __req_mod(req, what, peer_device, &m);
if (m.bio)
complete_master_bio(device, &m);
@ -299,7 +301,8 @@ static inline int _req_mod(struct drbd_request *req, enum drbd_req_event what)
* of the lower level driver completion callback, so we need to
* spin_lock_irqsave here. */
static inline int req_mod(struct drbd_request *req,
enum drbd_req_event what)
enum drbd_req_event what,
struct drbd_peer_device *peer_device)
{
unsigned long flags;
struct drbd_device *device = req->device;
@ -307,7 +310,7 @@ static inline int req_mod(struct drbd_request *req,
int rv;
spin_lock_irqsave(&device->resource->req_lock, flags);
rv = __req_mod(req, what, &m);
rv = __req_mod(req, what, peer_device, &m);
spin_unlock_irqrestore(&device->resource->req_lock, flags);
if (m.bio)

29
drivers/block/drbd/drbd_state.c
View File

@ -1222,9 +1222,11 @@ void drbd_resume_al(struct drbd_device *device)
}
/* helper for _drbd_set_state */
static void set_ov_position(struct drbd_device *device, enum drbd_conns cs)
static void set_ov_position(struct drbd_peer_device *peer_device, enum drbd_conns cs)
{
if (first_peer_device(device)->connection->agreed_pro_version < 90)
struct drbd_device *device = peer_device->device;
if (peer_device->connection->agreed_pro_version < 90)
device->ov_start_sector = 0;
device->rs_total = drbd_bm_bits(device);
device->ov_position = 0;
@ -1387,7 +1389,7 @@ _drbd_set_state(struct drbd_device *device, union drbd_state ns,
unsigned long now = jiffies;
int i;
set_ov_position(device, ns.conn);
set_ov_position(peer_device, ns.conn);
device->rs_start = now;
device->rs_last_sect_ev = 0;
device->ov_last_oos_size = 0;
@ -1398,7 +1400,7 @@ _drbd_set_state(struct drbd_device *device, union drbd_state ns,
device->rs_mark_time[i] = now;
}
drbd_rs_controller_reset(device);
drbd_rs_controller_reset(peer_device);
if (ns.conn == C_VERIFY_S) {
drbd_info(device, "Starting Online Verify from sector %llu\n",
@ -1518,8 +1520,9 @@ static void abw_start_sync(struct drbd_device *device, int rv)
}
int drbd_bitmap_io_from_worker(struct drbd_device *device,
int (*io_fn)(struct drbd_device *),
char *why, enum bm_flag flags)
int (*io_fn)(struct drbd_device *, struct drbd_peer_device *),
char *why, enum bm_flag flags,
struct drbd_peer_device *peer_device)
{
int rv;
@ -1529,7 +1532,7 @@ int drbd_bitmap_io_from_worker(struct drbd_device *device,
atomic_inc(&device->suspend_cnt);
drbd_bm_lock(device, why, flags);
rv = io_fn(device);
rv = io_fn(device, peer_device);
drbd_bm_unlock(device);
drbd_resume_io(device);
@ -1809,7 +1812,7 @@ static void after_state_ch(struct drbd_device *device, union drbd_state os,
device->state.conn == C_WF_BITMAP_S)
drbd_queue_bitmap_io(device, &drbd_send_bitmap, NULL,
"send_bitmap (WFBitMapS)",
BM_LOCKED_TEST_ALLOWED);
BM_LOCKED_TEST_ALLOWED, peer_device);
/* Lost contact to peer's copy of the data */
if (lost_contact_to_peer_data(os.pdsk, ns.pdsk)) {
@ -1839,7 +1842,7 @@ static void after_state_ch(struct drbd_device *device, union drbd_state os,
* No harm done if the bitmap still changes,
* redirtied pages will follow later. */
drbd_bitmap_io_from_worker(device, &drbd_bm_write,
"demote diskless peer", BM_LOCKED_SET_ALLOWED);
"demote diskless peer", BM_LOCKED_SET_ALLOWED, peer_device);
put_ldev(device);
}
@ -1851,7 +1854,7 @@ static void after_state_ch(struct drbd_device *device, union drbd_state os,
/* No changes to the bitmap expected this time, so assert that,
* even though no harm was done if it did change. */
drbd_bitmap_io_from_worker(device, &drbd_bm_write,
"demote", BM_LOCKED_TEST_ALLOWED);
"demote", BM_LOCKED_TEST_ALLOWED, peer_device);
put_ldev(device);
}
@ -1888,7 +1891,8 @@ static void after_state_ch(struct drbd_device *device, union drbd_state os,
/* no other bitmap changes expected during this phase */
drbd_queue_bitmap_io(device,
&drbd_bmio_set_n_write, &abw_start_sync,
"set_n_write from StartingSync", BM_LOCKED_TEST_ALLOWED);
"set_n_write from StartingSync", BM_LOCKED_TEST_ALLOWED,
peer_device);
/* first half of local IO error, failure to attach,
* or administrative detach */
@ -2011,7 +2015,8 @@ static void after_state_ch(struct drbd_device *device, union drbd_state os,
if ((os.conn > C_CONNECTED && os.conn < C_AHEAD) &&
(ns.conn == C_CONNECTED || ns.conn >= C_AHEAD) && get_ldev(device)) {
drbd_queue_bitmap_io(device, &drbd_bm_write_copy_pages, NULL,
"write from resync_finished", BM_LOCKED_CHANGE_ALLOWED);
"write from resync_finished", BM_LOCKED_CHANGE_ALLOWED,
peer_device);
put_ldev(device);
}

114
drivers/block/drbd/drbd_worker.c
View File

@ -28,8 +28,8 @@
#include "drbd_protocol.h"
#include "drbd_req.h"
static int make_ov_request(struct drbd_device *, int);
static int make_resync_request(struct drbd_device *, int);
static int make_ov_request(struct drbd_peer_device *, int);
static int make_resync_request(struct drbd_peer_device *, int);
/* endio handlers:
* drbd_md_endio (defined here)
@ -124,7 +124,7 @@ void drbd_endio_write_sec_final(struct drbd_peer_request *peer_req) __releases(l
* In case of a write error, send the neg ack anyways. */
if (!__test_and_set_bit(__EE_SEND_WRITE_ACK, &peer_req->flags))
inc_unacked(device);
drbd_set_out_of_sync(device, peer_req->i.sector, peer_req->i.size);
drbd_set_out_of_sync(peer_device, peer_req->i.sector, peer_req->i.size);
}
spin_lock_irqsave(&device->resource->req_lock, flags);
@ -276,7 +276,7 @@ void drbd_request_endio(struct bio *bio)
/* not req_mod(), we need irqsave here! */
spin_lock_irqsave(&device->resource->req_lock, flags);
__req_mod(req, what, &m);
__req_mod(req, what, NULL, &m);
spin_unlock_irqrestore(&device->resource->req_lock, flags);
put_ldev(device);
@ -363,7 +363,7 @@ static int w_e_send_csum(struct drbd_work *w, int cancel)
* drbd_alloc_pages due to pp_in_use > max_buffers. */
drbd_free_peer_req(device, peer_req);
peer_req = NULL;
inc_rs_pending(device);
inc_rs_pending(peer_device);
err = drbd_send_drequest_csum(peer_device, sector, size,
digest, digest_size,
P_CSUM_RS_REQUEST);
@ -430,10 +430,10 @@ int w_resync_timer(struct drbd_work *w, int cancel)
switch (device->state.conn) {
case C_VERIFY_S:
make_ov_request(device, cancel);
make_ov_request(first_peer_device(device), cancel);
break;
case C_SYNC_TARGET:
make_resync_request(device, cancel);
make_resync_request(first_peer_device(device), cancel);
break;
}
@ -493,8 +493,9 @@ struct fifo_buffer *fifo_alloc(unsigned int fifo_size)
return fb;
}
static int drbd_rs_controller(struct drbd_device *device, unsigned int sect_in)
static int drbd_rs_controller(struct drbd_peer_device *peer_device, unsigned int sect_in)
{
struct drbd_device *device = peer_device->device;
struct disk_conf *dc;
unsigned int want; /* The number of sectors we want in-flight */
int req_sect; /* Number of sectors to request in this turn */
@ -545,8 +546,9 @@ static int drbd_rs_controller(struct drbd_device *device, unsigned int sect_in)
return req_sect;
}
static int drbd_rs_number_requests(struct drbd_device *device)
static int drbd_rs_number_requests(struct drbd_peer_device *peer_device)
{
struct drbd_device *device = peer_device->device;
unsigned int sect_in; /* Number of sectors that came in since the last turn */
int number, mxb;
@ -556,7 +558,7 @@ static int drbd_rs_number_requests(struct drbd_device *device)
rcu_read_lock();
mxb = drbd_get_max_buffers(device) / 2;
if (rcu_dereference(device->rs_plan_s)->size) {
number = drbd_rs_controller(device, sect_in) >> (BM_BLOCK_SHIFT - 9);
number = drbd_rs_controller(peer_device, sect_in) >> (BM_BLOCK_SHIFT - 9);
device->c_sync_rate = number * HZ * (BM_BLOCK_SIZE / 1024) / SLEEP_TIME;
} else {
device->c_sync_rate = rcu_dereference(device->ldev->disk_conf)->resync_rate;
@ -580,9 +582,9 @@ static int drbd_rs_number_requests(struct drbd_device *device)
return number;
}
static int make_resync_request(struct drbd_device *const device, int cancel)
static int make_resync_request(struct drbd_peer_device *const peer_device, int cancel)
{
struct drbd_peer_device *const peer_device = first_peer_device(device);
struct drbd_device *const device = peer_device->device;
struct drbd_connection *const connection = peer_device ? peer_device->connection : NULL;
unsigned long bit;
sector_t sector;
@ -598,7 +600,7 @@ static int make_resync_request(struct drbd_device *const device, int cancel)
if (device->rs_total == 0) {
/* empty resync? */
drbd_resync_finished(device);
drbd_resync_finished(peer_device);
return 0;
}
@ -618,7 +620,7 @@ static int make_resync_request(struct drbd_device *const device, int cancel)
}
max_bio_size = queue_max_hw_sectors(device->rq_queue) << 9;
number = drbd_rs_number_requests(device);
number = drbd_rs_number_requests(peer_device);
if (number <= 0)
goto requeue;
@ -653,7 +655,7 @@ static int make_resync_request(struct drbd_device *const device, int cancel)
sector = BM_BIT_TO_SECT(bit);
if (drbd_try_rs_begin_io(device, sector)) {
if (drbd_try_rs_begin_io(peer_device, sector)) {
device->bm_resync_fo = bit;
goto requeue;
}
@ -729,13 +731,13 @@ static int make_resync_request(struct drbd_device *const device, int cancel)
} else {
int err;
inc_rs_pending(device);
inc_rs_pending(peer_device);
err = drbd_send_drequest(peer_device,
size == discard_granularity ? P_RS_THIN_REQ : P_RS_DATA_REQUEST,
sector, size, ID_SYNCER);
if (err) {
drbd_err(device, "drbd_send_drequest() failed, aborting...\n");
dec_rs_pending(device);
dec_rs_pending(peer_device);
put_ldev(device);
return err;
}
@ -760,8 +762,9 @@ static int make_resync_request(struct drbd_device *const device, int cancel)
return 0;
}
static int make_ov_request(struct drbd_device *device, int cancel)
static int make_ov_request(struct drbd_peer_device *peer_device, int cancel)
{
struct drbd_device *device = peer_device->device;
int number, i, size;
sector_t sector;
const sector_t capacity = get_capacity(device->vdisk);
@ -770,7 +773,7 @@ static int make_ov_request(struct drbd_device *device, int cancel)
if (unlikely(cancel))
return 1;
number = drbd_rs_number_requests(device);
number = drbd_rs_number_requests(peer_device);
sector = device->ov_position;
for (i = 0; i < number; i++) {
@ -788,7 +791,7 @@ static int make_ov_request(struct drbd_device *device, int cancel)
size = BM_BLOCK_SIZE;
if (drbd_try_rs_begin_io(device, sector)) {
if (drbd_try_rs_begin_io(peer_device, sector)) {
device->ov_position = sector;
goto requeue;
}
@ -796,9 +799,9 @@ static int make_ov_request(struct drbd_device *device, int cancel)
if (sector + (size>>9) > capacity)
size = (capacity-sector)<<9;
inc_rs_pending(device);
inc_rs_pending(peer_device);
if (drbd_send_ov_request(first_peer_device(device), sector, size)) {
dec_rs_pending(device);
dec_rs_pending(peer_device);
return 0;
}
sector += BM_SECT_PER_BIT;
@ -818,8 +821,8 @@ int w_ov_finished(struct drbd_work *w, int cancel)
container_of(w, struct drbd_device_work, w);
struct drbd_device *device = dw->device;
kfree(dw);
ov_out_of_sync_print(device);
drbd_resync_finished(device);
ov_out_of_sync_print(first_peer_device(device));
drbd_resync_finished(first_peer_device(device));
return 0;
}
@ -831,7 +834,7 @@ static int w_resync_finished(struct drbd_work *w, int cancel)
struct drbd_device *device = dw->device;
kfree(dw);
drbd_resync_finished(device);
drbd_resync_finished(first_peer_device(device));
return 0;
}
@ -846,9 +849,10 @@ static void ping_peer(struct drbd_device *device)
test_bit(GOT_PING_ACK, &connection->flags) || device->state.conn < C_CONNECTED);
}
int drbd_resync_finished(struct drbd_device *device)
int drbd_resync_finished(struct drbd_peer_device *peer_device)
{
struct drbd_connection *connection = first_peer_device(device)->connection;
struct drbd_device *device = peer_device->device;
struct drbd_connection *connection = peer_device->connection;
unsigned long db, dt, dbdt;
unsigned long n_oos;
union drbd_state os, ns;
@ -1129,7 +1133,7 @@ int w_e_end_rsdata_req(struct drbd_work *w, int cancel)
err = drbd_send_ack(peer_device, P_RS_CANCEL, peer_req);
} else if (likely((peer_req->flags & EE_WAS_ERROR) == 0)) {
if (likely(device->state.pdsk >= D_INCONSISTENT)) {
inc_rs_pending(device);
inc_rs_pending(peer_device);
if (peer_req->flags & EE_RS_THIN_REQ && all_zero(peer_req))
err = drbd_send_rs_deallocated(peer_device, peer_req);
else
@ -1148,7 +1152,7 @@ int w_e_end_rsdata_req(struct drbd_work *w, int cancel)
err = drbd_send_ack(peer_device, P_NEG_RS_DREPLY, peer_req);
/* update resync data with failure */
drbd_rs_failed_io(device, peer_req->i.sector, peer_req->i.size);
drbd_rs_failed_io(peer_device, peer_req->i.sector, peer_req->i.size);
}
dec_unacked(device);
@ -1199,12 +1203,12 @@ int w_e_end_csum_rs_req(struct drbd_work *w, int cancel)
}
if (eq) {
drbd_set_in_sync(device, peer_req->i.sector, peer_req->i.size);
drbd_set_in_sync(peer_device, peer_req->i.sector, peer_req->i.size);
/* rs_same_csums unit is BM_BLOCK_SIZE */
device->rs_same_csum += peer_req->i.size >> BM_BLOCK_SHIFT;
err = drbd_send_ack(peer_device, P_RS_IS_IN_SYNC, peer_req);
} else {
inc_rs_pending(device);
inc_rs_pending(peer_device);
peer_req->block_id = ID_SYNCER; /* By setting block_id, digest pointer becomes invalid! */
peer_req->flags &= ~EE_HAS_DIGEST; /* This peer request no longer has a digest pointer */
kfree(di);
@ -1257,10 +1261,10 @@ int w_e_end_ov_req(struct drbd_work *w, int cancel)
* drbd_alloc_pages due to pp_in_use > max_buffers. */
drbd_free_peer_req(device, peer_req);
peer_req = NULL;
inc_rs_pending(device);
inc_rs_pending(peer_device);
err = drbd_send_drequest_csum(peer_device, sector, size, digest, digest_size, P_OV_REPLY);
if (err)
dec_rs_pending(device);
dec_rs_pending(peer_device);
kfree(digest);
out:
@ -1270,15 +1274,16 @@ int w_e_end_ov_req(struct drbd_work *w, int cancel)
return err;
}
void drbd_ov_out_of_sync_found(struct drbd_device *device, sector_t sector, int size)
void drbd_ov_out_of_sync_found(struct drbd_peer_device *peer_device, sector_t sector, int size)
{
struct drbd_device *device = peer_device->device;
if (device->ov_last_oos_start + device->ov_last_oos_size == sector) {
device->ov_last_oos_size += size>>9;
} else {
device->ov_last_oos_start = sector;
device->ov_last_oos_size = size>>9;
}
drbd_set_out_of_sync(device, sector, size);
drbd_set_out_of_sync(peer_device, sector, size);
}
int w_e_end_ov_reply(struct drbd_work *w, int cancel)
@ -1328,9 +1333,9 @@ int w_e_end_ov_reply(struct drbd_work *w, int cancel)
* drbd_alloc_pages due to pp_in_use > max_buffers. */
drbd_free_peer_req(device, peer_req);
if (!eq)
drbd_ov_out_of_sync_found(device, sector, size);
drbd_ov_out_of_sync_found(peer_device, sector, size);
else
ov_out_of_sync_print(device);
ov_out_of_sync_print(peer_device);
err = drbd_send_ack_ex(peer_device, P_OV_RESULT, sector, size,
eq ? ID_IN_SYNC : ID_OUT_OF_SYNC);
@ -1341,14 +1346,14 @@ int w_e_end_ov_reply(struct drbd_work *w, int cancel)
/* let's advance progress step marks only for every other megabyte */
if ((device->ov_left & 0x200) == 0x200)
drbd_advance_rs_marks(device, device->ov_left);
drbd_advance_rs_marks(peer_device, device->ov_left);
stop_sector_reached = verify_can_do_stop_sector(device) &&
(sector + (size>>9)) >= device->ov_stop_sector;
if (device->ov_left == 0 || stop_sector_reached) {
ov_out_of_sync_print(device);
drbd_resync_finished(device);
ov_out_of_sync_print(peer_device);
drbd_resync_finished(peer_device);
}
return err;
@ -1425,7 +1430,7 @@ int w_send_out_of_sync(struct drbd_work *w, int cancel)
int err;
if (unlikely(cancel)) {
req_mod(req, SEND_CANCELED);
req_mod(req, SEND_CANCELED, peer_device);
return 0;
}
req->pre_send_jif = jiffies;
@ -1437,7 +1442,7 @@ int w_send_out_of_sync(struct drbd_work *w, int cancel)
maybe_send_barrier(connection, req->epoch);
err = drbd_send_out_of_sync(peer_device, req);
req_mod(req, OOS_HANDED_TO_NETWORK);
req_mod(req, OOS_HANDED_TO_NETWORK, peer_device);
return err;
}
@ -1457,7 +1462,7 @@ int w_send_dblock(struct drbd_work *w, int cancel)
int err;
if (unlikely(cancel)) {
req_mod(req, SEND_CANCELED);
req_mod(req, SEND_CANCELED, peer_device);
return 0;
}
req->pre_send_jif = jiffies;
@ -1467,7 +1472,7 @@ int w_send_dblock(struct drbd_work *w, int cancel)
connection->send.current_epoch_writes++;
err = drbd_send_dblock(peer_device, req);
req_mod(req, err ? SEND_FAILED : HANDED_OVER_TO_NETWORK);
req_mod(req, err ? SEND_FAILED : HANDED_OVER_TO_NETWORK, peer_device);
if (do_send_unplug && !err)
pd_send_unplug_remote(peer_device);
@ -1490,7 +1495,7 @@ int w_send_read_req(struct drbd_work *w, int cancel)
int err;
if (unlikely(cancel)) {
req_mod(req, SEND_CANCELED);
req_mod(req, SEND_CANCELED, peer_device);
return 0;
}
req->pre_send_jif = jiffies;
@ -1502,7 +1507,7 @@ int w_send_read_req(struct drbd_work *w, int cancel)
err = drbd_send_drequest(peer_device, P_DATA_REQUEST, req->i.sector, req->i.size,
(unsigned long)req);
req_mod(req, err ? SEND_FAILED : HANDED_OVER_TO_NETWORK);
req_mod(req, err ? SEND_FAILED : HANDED_OVER_TO_NETWORK, peer_device);
if (do_send_unplug && !err)
pd_send_unplug_remote(peer_device);
@ -1668,8 +1673,9 @@ void drbd_resync_after_changed(struct drbd_device *device)
} while (changed);
}
void drbd_rs_controller_reset(struct drbd_device *device)
void drbd_rs_controller_reset(struct drbd_peer_device *peer_device)
{
struct drbd_device *device = peer_device->device;
struct gendisk *disk = device->ldev->backing_bdev->bd_disk;
struct fifo_buffer *plan;
@ -1891,10 +1897,10 @@ void drbd_start_resync(struct drbd_device *device, enum drbd_conns side)
rcu_read_unlock();
schedule_timeout_interruptible(timeo);
}
drbd_resync_finished(device);
drbd_resync_finished(peer_device);
}
drbd_rs_controller_reset(device);
drbd_rs_controller_reset(peer_device);
/* ns.conn may already be != device->state.conn,
* we may have been paused in between, or become paused until
* the timer triggers.
@ -1909,8 +1915,9 @@ void drbd_start_resync(struct drbd_device *device, enum drbd_conns side)
mutex_unlock(device->state_mutex);
}
static void update_on_disk_bitmap(struct drbd_device *device, bool resync_done)
static void update_on_disk_bitmap(struct drbd_peer_device *peer_device, bool resync_done)
{
struct drbd_device *device = peer_device->device;
struct sib_info sib = { .sib_reason = SIB_SYNC_PROGRESS, };
device->rs_last_bcast = jiffies;
@ -1919,7 +1926,7 @@ static void update_on_disk_bitmap(struct drbd_device *device, bool resync_done)
drbd_bm_write_lazy(device, 0);
if (resync_done && is_sync_state(device->state.conn))
drbd_resync_finished(device);
drbd_resync_finished(peer_device);
drbd_bcast_event(device, &sib);
/* update timestamp, in case it took a while to write out stuff */
@ -1945,6 +1952,7 @@ static void drbd_ldev_destroy(struct drbd_device *device)
static void go_diskless(struct drbd_device *device)
{
struct drbd_peer_device *peer_device = first_peer_device(device);
D_ASSERT(device, device->state.disk == D_FAILED);
/* we cannot assert local_cnt == 0 here, as get_ldev_if_state will
* inc/dec it frequently. Once we are D_DISKLESS, no one will touch
@ -1970,7 +1978,7 @@ static void go_diskless(struct drbd_device *device)
* Any modifications would not be expected anymore, though.
*/
if (drbd_bitmap_io_from_worker(device, drbd_bm_write,
"detach", BM_LOCKED_TEST_ALLOWED)) {
"detach", BM_LOCKED_TEST_ALLOWED, peer_device)) {
if (test_bit(WAS_READ_ERROR, &device->flags)) {
drbd_md_set_flag(device, MDF_FULL_SYNC);
drbd_md_sync(device);
@ -2017,7 +2025,7 @@ static void do_device_work(struct drbd_device *device, const unsigned long todo)
do_md_sync(device);
if (test_bit(RS_DONE, &todo) ||
test_bit(RS_PROGRESS, &todo))
update_on_disk_bitmap(device, test_bit(RS_DONE, &todo));
update_on_disk_bitmap(first_peer_device(device), test_bit(RS_DONE, &todo));
if (test_bit(GO_DISKLESS, &todo))
go_diskless(device);
if (test_bit(DESTROY_DISK, &todo))

15
drivers/block/nbd.c
View File

@ -325,6 +325,9 @@ static int nbd_set_size(struct nbd_device *nbd, loff_t bytesize,
if (blk_validate_block_size(blksize))
return -EINVAL;
if (bytesize < 0)
return -EINVAL;
nbd->config->bytesize = bytesize;
nbd->config->blksize_bits = __ffs(blksize);
@ -1111,6 +1114,9 @@ static int nbd_add_socket(struct nbd_device *nbd, unsigned long arg,
struct nbd_sock *nsock;
int err;
/* Arg will be cast to int, check it to avoid overflow */
if (arg > INT_MAX)
return -EINVAL;
sock = nbd_get_socket(nbd, arg, &err);
if (!sock)
return err;
@ -1934,11 +1940,11 @@ static int nbd_genl_connect(struct sk_buff *skb, struct genl_info *info)
return -EINVAL;
}
}
if (!info->attrs[NBD_ATTR_SOCKETS]) {
if (GENL_REQ_ATTR_CHECK(info, NBD_ATTR_SOCKETS)) {
pr_err("must specify at least one socket\n");
return -EINVAL;
}
if (!info->attrs[NBD_ATTR_SIZE_BYTES]) {
if (GENL_REQ_ATTR_CHECK(info, NBD_ATTR_SIZE_BYTES)) {
pr_err("must specify a size in bytes for the device\n");
return -EINVAL;
}
@ -2123,7 +2129,7 @@ static int nbd_genl_disconnect(struct sk_buff *skb, struct genl_info *info)
if (!netlink_capable(skb, CAP_SYS_ADMIN))
return -EPERM;
if (!info->attrs[NBD_ATTR_INDEX]) {
if (GENL_REQ_ATTR_CHECK(info, NBD_ATTR_INDEX)) {
pr_err("must specify an index to disconnect\n");
return -EINVAL;
}
@ -2161,7 +2167,7 @@ static int nbd_genl_reconfigure(struct sk_buff *skb, struct genl_info *info)
if (!netlink_capable(skb, CAP_SYS_ADMIN))
return -EPERM;
if (!info->attrs[NBD_ATTR_INDEX]) {
if (GENL_REQ_ATTR_CHECK(info, NBD_ATTR_INDEX)) {
pr_err("must specify a device to reconfigure\n");
return -EINVAL;
}
@ -2325,6 +2331,7 @@ static struct genl_family nbd_genl_family __ro_after_init = {
.n_small_ops = ARRAY_SIZE(nbd_connect_genl_ops),
.resv_start_op = NBD_CMD_STATUS + 1,
.maxattr = NBD_ATTR_MAX,
.netnsok = 1,
.policy = nbd_attr_policy,
.mcgrps = nbd_mcast_grps,
.n_mcgrps = ARRAY_SIZE(nbd_mcast_grps),

2
drivers/block/null_blk/Kconfig
View File

@ -9,4 +9,4 @@ config BLK_DEV_NULL_BLK
config BLK_DEV_NULL_BLK_FAULT_INJECTION
bool "Support fault injection for Null test block driver"
depends on BLK_DEV_NULL_BLK && FAULT_INJECTION
depends on BLK_DEV_NULL_BLK && FAULT_INJECTION_CONFIGFS

135
drivers/block/null_blk/main.c
View File

@ -250,7 +250,7 @@ static void null_free_device_storage(struct nullb_device *dev, bool is_cache);
static inline struct nullb_device *to_nullb_device(struct config_item *item)
{
return item ? container_of(item, struct nullb_device, item) : NULL;
return item ? container_of(to_config_group(item), struct nullb_device, group) : NULL;
}
static inline ssize_t nullb_device_uint_attr_show(unsigned int val, char *page)
@ -593,8 +593,29 @@ static const struct config_item_type nullb_device_type = {
.ct_owner = THIS_MODULE,
};
#ifdef CONFIG_BLK_DEV_NULL_BLK_FAULT_INJECTION
static void nullb_add_fault_config(struct nullb_device *dev)
{
fault_config_init(&dev->timeout_config, "timeout_inject");
fault_config_init(&dev->requeue_config, "requeue_inject");
fault_config_init(&dev->init_hctx_fault_config, "init_hctx_fault_inject");
configfs_add_default_group(&dev->timeout_config.group, &dev->group);
configfs_add_default_group(&dev->requeue_config.group, &dev->group);
configfs_add_default_group(&dev->init_hctx_fault_config.group, &dev->group);
}
#else
static void nullb_add_fault_config(struct nullb_device *dev)
{
}
#endif
static struct
config_item *nullb_group_make_item(struct config_group *group, const char *name)
config_group *nullb_group_make_group(struct config_group *group, const char *name)
{
struct nullb_device *dev;
@ -605,9 +626,10 @@ config_item *nullb_group_make_item(struct config_group *group, const char *name)
if (!dev)
return ERR_PTR(-ENOMEM);
config_item_init_type_name(&dev->item, name, &nullb_device_type);
config_group_init_type_name(&dev->group, name, &nullb_device_type);
nullb_add_fault_config(dev);
return &dev->item;
return &dev->group;
}
static void
@ -645,7 +667,7 @@ static struct configfs_attribute *nullb_group_attrs[] = {
};
static struct configfs_group_operations nullb_group_ops = {
.make_item = nullb_group_make_item,
.make_group = nullb_group_make_group,
.drop_item = nullb_group_drop_item,
};
@ -676,6 +698,13 @@ static struct nullb_device *null_alloc_dev(void)
dev = kzalloc(sizeof(*dev), GFP_KERNEL);
if (!dev)
return NULL;
#ifdef CONFIG_BLK_DEV_NULL_BLK_FAULT_INJECTION
dev->timeout_config.attr = null_timeout_attr;
dev->requeue_config.attr = null_requeue_attr;
dev->init_hctx_fault_config.attr = null_init_hctx_attr;
#endif
INIT_RADIX_TREE(&dev->data, GFP_ATOMIC);
INIT_RADIX_TREE(&dev->cache, GFP_ATOMIC);
if (badblocks_init(&dev->badblocks, 0)) {
@ -1030,8 +1059,8 @@ static int null_flush_cache_page(struct nullb *nullb, struct nullb_page *c_page)
if (!t_page)
return -ENOMEM;
src = kmap_atomic(c_page->page);
dst = kmap_atomic(t_page->page);
src = kmap_local_page(c_page->page);
dst = kmap_local_page(t_page->page);
for (i = 0; i < PAGE_SECTORS;
i += (nullb->dev->blocksize >> SECTOR_SHIFT)) {
@ -1043,8 +1072,8 @@ static int null_flush_cache_page(struct nullb *nullb, struct nullb_page *c_page)
}
}
kunmap_atomic(dst);
kunmap_atomic(src);
kunmap_local(dst);
kunmap_local(src);
ret = radix_tree_delete_item(&nullb->dev->cache, idx, c_page);
null_free_page(ret);
@ -1112,7 +1141,6 @@ static int copy_to_nullb(struct nullb *nullb, struct page *source,
size_t temp, count = 0;
unsigned int offset;
struct nullb_page *t_page;
void *dst, *src;
while (count < n) {
temp = min_t(size_t, nullb->dev->blocksize, n - count);
@ -1126,11 +1154,7 @@ static int copy_to_nullb(struct nullb *nullb, struct page *source,
if (!t_page)
return -ENOSPC;
src = kmap_atomic(source);
dst = kmap_atomic(t_page->page);
memcpy(dst + offset, src + off + count, temp);
kunmap_atomic(dst);
kunmap_atomic(src);
memcpy_page(t_page->page, offset, source, off + count, temp);
__set_bit(sector & SECTOR_MASK, t_page->bitmap);
@ -1149,7 +1173,6 @@ static int copy_from_nullb(struct nullb *nullb, struct page *dest,
size_t temp, count = 0;
unsigned int offset;
struct nullb_page *t_page;
void *dst, *src;
while (count < n) {
temp = min_t(size_t, nullb->dev->blocksize, n - count);
@ -1158,16 +1181,11 @@ static int copy_from_nullb(struct nullb *nullb, struct page *dest,
t_page = null_lookup_page(nullb, sector, false,
!null_cache_active(nullb));
dst = kmap_atomic(dest);
if (!t_page) {
memset(dst + off + count, 0, temp);
goto next;
}
src = kmap_atomic(t_page->page);
memcpy(dst + off + count, src + offset, temp);
kunmap_atomic(src);
next:
kunmap_atomic(dst);
if (t_page)
memcpy_page(dest, off + count, t_page->page, offset,
temp);
else
zero_user(dest, off + count, temp);
count += temp;
sector += temp >> SECTOR_SHIFT;
@ -1178,11 +1196,7 @@ static int copy_from_nullb(struct nullb *nullb, struct page *dest,
static void nullb_fill_pattern(struct nullb *nullb, struct page *page,
unsigned int len, unsigned int off)
{
void *dst;
dst = kmap_atomic(page);
memset(dst + off, 0xFF, len);
kunmap_atomic(dst);
memset_page(page, off, 0xff, len);
}
blk_status_t null_handle_discard(struct nullb_device *dev,
@ -1529,24 +1543,48 @@ static void null_submit_bio(struct bio *bio)
null_handle_cmd(alloc_cmd(nq, bio), sector, nr_sectors, bio_op(bio));
}
#ifdef CONFIG_BLK_DEV_NULL_BLK_FAULT_INJECTION
static bool should_timeout_request(struct request *rq)
{
struct nullb_cmd *cmd = blk_mq_rq_to_pdu(rq);
struct nullb_device *dev = cmd->nq->dev;
return should_fail(&dev->timeout_config.attr, 1);
}
static bool should_requeue_request(struct request *rq)
{
struct nullb_cmd *cmd = blk_mq_rq_to_pdu(rq);
struct nullb_device *dev = cmd->nq->dev;
return should_fail(&dev->requeue_config.attr, 1);
}
static bool should_init_hctx_fail(struct nullb_device *dev)
{
return should_fail(&dev->init_hctx_fault_config.attr, 1);
}
#else
static bool should_timeout_request(struct request *rq)
{
#ifdef CONFIG_BLK_DEV_NULL_BLK_FAULT_INJECTION
if (g_timeout_str[0])
return should_fail(&null_timeout_attr, 1);
#endif
return false;
}
static bool should_requeue_request(struct request *rq)
{
#ifdef CONFIG_BLK_DEV_NULL_BLK_FAULT_INJECTION
if (g_requeue_str[0])
return should_fail(&null_requeue_attr, 1);
#endif
return false;
}
static bool should_init_hctx_fail(struct nullb_device *dev)
{
return false;
}
#endif
static void null_map_queues(struct blk_mq_tag_set *set)
{
struct nullb *nullb = set->driver_data;
@ -1743,10 +1781,8 @@ static int null_init_hctx(struct blk_mq_hw_ctx *hctx, void *driver_data,
struct nullb *nullb = hctx->queue->queuedata;
struct nullb_queue *nq;
#ifdef CONFIG_BLK_DEV_NULL_BLK_FAULT_INJECTION
if (g_init_hctx_str[0] && should_fail(&null_init_hctx_attr, 1))
if (should_init_hctx_fail(nullb->dev))
return -EFAULT;
#endif
nq = &nullb->queues[hctx_idx];
hctx->driver_data = nq;
@ -1964,6 +2000,11 @@ static int null_init_tag_set(struct nullb *nullb, struct blk_mq_tag_set *set)
static int null_validate_conf(struct nullb_device *dev)
{
if (dev->queue_mode == NULL_Q_RQ) {
pr_err("legacy IO path is no longer available\n");
return -EINVAL;
}
dev->blocksize = round_down(dev->blocksize, 512);
dev->blocksize = clamp_t(unsigned int, dev->blocksize, 512, 4096);
@ -2066,9 +2107,6 @@ static int null_add_dev(struct nullb_device *dev)
if (rv)
goto out_cleanup_queues;
if (!null_setup_fault())
goto out_cleanup_tags;
nullb->tag_set->timeout = 5 * HZ;
nullb->disk = blk_mq_alloc_disk(nullb->tag_set, nullb);
if (IS_ERR(nullb->disk)) {
@ -2130,10 +2168,10 @@ static int null_add_dev(struct nullb_device *dev)
null_config_discard(nullb);
if (config_item_name(&dev->item)) {
if (config_item_name(&dev->group.cg_item)) {
/* Use configfs dir name as the device name */
snprintf(nullb->disk_name, sizeof(nullb->disk_name),
"%s", config_item_name(&dev->item));
"%s", config_item_name(&dev->group.cg_item));
} else {
sprintf(nullb->disk_name, "nullb%d", nullb->index);
}
@ -2233,6 +2271,9 @@ static int __init null_init(void)
g_home_node = NUMA_NO_NODE;
}
if (!null_setup_fault())
return -EINVAL;
if (g_queue_mode == NULL_Q_RQ) {
pr_err("legacy IO path is no longer available\n");
return -EINVAL;

7
drivers/block/null_blk/null_blk.h
View File

@ -69,7 +69,12 @@ enum {
struct nullb_device {
struct nullb *nullb;
struct config_item item;
struct config_group group;
#ifdef CONFIG_BLK_DEV_NULL_BLK_FAULT_INJECTION
struct fault_config timeout_config;
struct fault_config requeue_config;
struct fault_config init_hctx_fault_config;
#endif
struct radix_tree_root data; /* data stored in the disk */
struct radix_tree_root cache; /* disk cache data */
unsigned long flags; /* device flags */

133
drivers/block/ublk_drv.c
View File

@ -53,7 +53,8 @@
| UBLK_F_NEED_GET_DATA \
| UBLK_F_USER_RECOVERY \
| UBLK_F_USER_RECOVERY_REISSUE \
| UBLK_F_UNPRIVILEGED_DEV)
| UBLK_F_UNPRIVILEGED_DEV \
| UBLK_F_CMD_IOCTL_ENCODE)
/* All UBLK_PARAM_TYPE_* should be included here */
#define UBLK_PARAM_TYPE_ALL (UBLK_PARAM_TYPE_BASIC | \
@ -298,9 +299,7 @@ static inline bool ublk_can_use_task_work(const struct ublk_queue *ubq)
static inline bool ublk_need_get_data(const struct ublk_queue *ubq)
{
if (ubq->flags & UBLK_F_NEED_GET_DATA)
return true;
return false;
return ubq->flags & UBLK_F_NEED_GET_DATA;
}
static struct ublk_device *ublk_get_device(struct ublk_device *ub)
@ -349,25 +348,19 @@ static inline int ublk_queue_cmd_buf_size(struct ublk_device *ub, int q_id)
static inline bool ublk_queue_can_use_recovery_reissue(
struct ublk_queue *ubq)
{
if ((ubq->flags & UBLK_F_USER_RECOVERY) &&
(ubq->flags & UBLK_F_USER_RECOVERY_REISSUE))
return true;
return false;
return (ubq->flags & UBLK_F_USER_RECOVERY) &&
(ubq->flags & UBLK_F_USER_RECOVERY_REISSUE);
}
static inline bool ublk_queue_can_use_recovery(
struct ublk_queue *ubq)
{
if (ubq->flags & UBLK_F_USER_RECOVERY)
return true;
return false;
return ubq->flags & UBLK_F_USER_RECOVERY;
}
static inline bool ublk_can_use_recovery(struct ublk_device *ub)
{
if (ub->dev_info.flags & UBLK_F_USER_RECOVERY)
return true;
return false;
return ub->dev_info.flags & UBLK_F_USER_RECOVERY;
}
static void ublk_free_disk(struct gendisk *disk)
@ -428,10 +421,9 @@ static const struct block_device_operations ub_fops = {
#define UBLK_MAX_PIN_PAGES 32
struct ublk_map_data {
const struct ublk_queue *ubq;
const struct request *rq;
const struct ublk_io *io;
unsigned max_bytes;
unsigned long ubuf;
unsigned int len;
};
struct ublk_io_iter {
@ -488,18 +480,17 @@ static inline unsigned ublk_copy_io_pages(struct ublk_io_iter *data,
return done;
}
static inline int ublk_copy_user_pages(struct ublk_map_data *data,
bool to_vm)
static int ublk_copy_user_pages(struct ublk_map_data *data, bool to_vm)
{
const unsigned int gup_flags = to_vm ? FOLL_WRITE : 0;
const unsigned long start_vm = data->io->addr;
const unsigned long start_vm = data->ubuf;
unsigned int done = 0;
struct ublk_io_iter iter = {
.pg_off = start_vm & (PAGE_SIZE - 1),
.bio = data->rq->bio,
.iter = data->rq->bio->bi_iter,
};
const unsigned int nr_pages = round_up(data->max_bytes +
const unsigned int nr_pages = round_up(data->len +
(start_vm & (PAGE_SIZE - 1)), PAGE_SIZE) >> PAGE_SHIFT;
while (done < nr_pages) {
@ -512,42 +503,49 @@ static inline int ublk_copy_user_pages(struct ublk_map_data *data,
iter.pages);
if (iter.nr_pages <= 0)
return done == 0 ? iter.nr_pages : done;
len = ublk_copy_io_pages(&iter, data->max_bytes, to_vm);
len = ublk_copy_io_pages(&iter, data->len, to_vm);
for (i = 0; i < iter.nr_pages; i++) {
if (to_vm)
set_page_dirty(iter.pages[i]);
put_page(iter.pages[i]);
}
data->max_bytes -= len;
data->len -= len;
done += iter.nr_pages;
}
return done;
}
static inline bool ublk_need_map_req(const struct request *req)
{
return ublk_rq_has_data(req) && req_op(req) == REQ_OP_WRITE;
}
static inline bool ublk_need_unmap_req(const struct request *req)
{
return ublk_rq_has_data(req) && req_op(req) == REQ_OP_READ;
}
static int ublk_map_io(const struct ublk_queue *ubq, const struct request *req,
struct ublk_io *io)
{
const unsigned int rq_bytes = blk_rq_bytes(req);
/*
* no zero copy, we delay copy WRITE request data into ublksrv
* context and the big benefit is that pinning pages in current
* context is pretty fast, see ublk_pin_user_pages
*/
if (req_op(req) != REQ_OP_WRITE && req_op(req) != REQ_OP_FLUSH)
return rq_bytes;
if (ublk_rq_has_data(req)) {
if (ublk_need_map_req(req)) {
struct ublk_map_data data = {
.ubq = ubq,
.rq = req,
.io = io,
.max_bytes = rq_bytes,
.ubuf = io->addr,
.len = rq_bytes,
};
ublk_copy_user_pages(&data, true);
return rq_bytes - data.max_bytes;
return rq_bytes - data.len;
}
return rq_bytes;
}
@ -558,19 +556,18 @@ static int ublk_unmap_io(const struct ublk_queue *ubq,
{
const unsigned int rq_bytes = blk_rq_bytes(req);
if (req_op(req) == REQ_OP_READ && ublk_rq_has_data(req)) {
if (ublk_need_unmap_req(req)) {
struct ublk_map_data data = {
.ubq = ubq,
.rq = req,
.io = io,
.max_bytes = io->res,
.ubuf = io->addr,
.len = io->res,
};
WARN_ON_ONCE(io->res > rq_bytes);
ublk_copy_user_pages(&data, false);
return io->res - data.max_bytes;
return io->res - data.len;
}
return rq_bytes;
}
@ -655,14 +652,15 @@ static void ublk_complete_rq(struct request *req)
struct ublk_queue *ubq = req->mq_hctx->driver_data;
struct ublk_io *io = &ubq->ios[req->tag];
unsigned int unmapped_bytes;
blk_status_t res = BLK_STS_OK;
/* failed read IO if nothing is read */
if (!io->res && req_op(req) == REQ_OP_READ)
io->res = -EIO;
if (io->res < 0) {
blk_mq_end_request(req, errno_to_blk_status(io->res));
return;
res = errno_to_blk_status(io->res);
goto exit;
}
/*
@ -671,10 +669,8 @@ static void ublk_complete_rq(struct request *req)
*
* Both the two needn't unmap.
*/
if (req_op(req) != REQ_OP_READ && req_op(req) != REQ_OP_WRITE) {
blk_mq_end_request(req, BLK_STS_OK);
return;
}
if (req_op(req) != REQ_OP_READ && req_op(req) != REQ_OP_WRITE)
goto exit;
/* for READ request, writing data in iod->addr to rq buffers */
unmapped_bytes = ublk_unmap_io(ubq, req, io);
@ -691,6 +687,10 @@ static void ublk_complete_rq(struct request *req)
blk_mq_requeue_request(req, true);
else
__blk_mq_end_request(req, BLK_STS_OK);
return;
exit:
blk_mq_end_request(req, res);
}
/*
@ -771,9 +771,7 @@ static inline void __ublk_rq_task_work(struct request *req,
return;
}
if (ublk_need_get_data(ubq) &&
(req_op(req) == REQ_OP_WRITE ||
req_op(req) == REQ_OP_FLUSH)) {
if (ublk_need_get_data(ubq) && ublk_need_map_req(req)) {
/*
* We have not handled UBLK_IO_NEED_GET_DATA command yet,
* so immepdately pass UBLK_IO_RES_NEED_GET_DATA to ublksrv
@ -1261,6 +1259,19 @@ static void ublk_handle_need_get_data(struct ublk_device *ub, int q_id,
ublk_queue_cmd(ubq, req);
}
static inline int ublk_check_cmd_op(u32 cmd_op)
{
u32 ioc_type = _IOC_TYPE(cmd_op);
if (IS_ENABLED(CONFIG_BLKDEV_UBLK_LEGACY_OPCODES) && ioc_type != 'u')
return -EOPNOTSUPP;
if (ioc_type != 'u' && ioc_type != 0)
return -EOPNOTSUPP;
return 0;
}
static int __ublk_ch_uring_cmd(struct io_uring_cmd *cmd,
unsigned int issue_flags,
struct ublksrv_io_cmd *ub_cmd)
@ -1303,10 +1314,15 @@ static int __ublk_ch_uring_cmd(struct io_uring_cmd *cmd,
* iff the driver have set the UBLK_IO_FLAG_NEED_GET_DATA.
*/
if ((!!(io->flags & UBLK_IO_FLAG_NEED_GET_DATA))
^ (cmd_op == UBLK_IO_NEED_GET_DATA))
^ (_IOC_NR(cmd_op) == UBLK_IO_NEED_GET_DATA))
goto out;
switch (cmd_op) {
ret = ublk_check_cmd_op(cmd_op);
if (ret)
goto out;
ret = -EINVAL;
switch (_IOC_NR(cmd_op)) {
case UBLK_IO_FETCH_REQ:
/* UBLK_IO_FETCH_REQ is only allowed before queue is setup */
if (ublk_queue_ready(ubq)) {
@ -1770,6 +1786,8 @@ static int ublk_ctrl_add_dev(struct io_uring_cmd *cmd)
if (!IS_BUILTIN(CONFIG_BLK_DEV_UBLK))
ub->dev_info.flags |= UBLK_F_URING_CMD_COMP_IN_TASK;
ub->dev_info.flags |= UBLK_F_CMD_IOCTL_ENCODE;
/* We are not ready to support zero copy */
ub->dev_info.flags &= ~UBLK_F_SUPPORT_ZERO_COPY;
@ -2128,7 +2146,7 @@ static int ublk_ctrl_uring_cmd_permission(struct ublk_device *ub,
* know if the specified device is created as unprivileged
* mode.
*/
if (cmd->cmd_op != UBLK_CMD_GET_DEV_INFO2)
if (_IOC_NR(cmd->cmd_op) != UBLK_CMD_GET_DEV_INFO2)
return 0;
}
@ -2154,7 +2172,7 @@ static int ublk_ctrl_uring_cmd_permission(struct ublk_device *ub,
dev_path[header->dev_path_len] = 0;
ret = -EINVAL;
switch (cmd->cmd_op) {
switch (_IOC_NR(cmd->cmd_op)) {
case UBLK_CMD_GET_DEV_INFO:
case UBLK_CMD_GET_DEV_INFO2:
case UBLK_CMD_GET_QUEUE_AFFINITY:
@ -2193,6 +2211,7 @@ static int ublk_ctrl_uring_cmd(struct io_uring_cmd *cmd,
{
struct ublksrv_ctrl_cmd *header = (struct ublksrv_ctrl_cmd *)cmd->cmd;
struct ublk_device *ub = NULL;
u32 cmd_op = cmd->cmd_op;
int ret = -EINVAL;
if (issue_flags & IO_URING_F_NONBLOCK)
@ -2203,22 +2222,22 @@ static int ublk_ctrl_uring_cmd(struct io_uring_cmd *cmd,
if (!(issue_flags & IO_URING_F_SQE128))
goto out;
if (cmd->cmd_op != UBLK_CMD_ADD_DEV) {
ret = ublk_check_cmd_op(cmd_op);
if (ret)
goto out;
if (_IOC_NR(cmd_op) != UBLK_CMD_ADD_DEV) {
ret = -ENODEV;
ub = ublk_get_device_from_id(header->dev_id);
if (!ub)
goto out;
ret = ublk_ctrl_uring_cmd_permission(ub, cmd);
} else {
/* ADD_DEV permission check is done in command handler */
ret = 0;
if (ret)
goto put_dev;
}
if (ret)
goto put_dev;
switch (cmd->cmd_op) {
switch (_IOC_NR(cmd_op)) {
case UBLK_CMD_START_DEV:
ret = ublk_ctrl_start_dev(ub, cmd);
break;

19
drivers/md/dm-table.c
View File

@ -1202,21 +1202,12 @@ struct dm_crypto_profile {
struct mapped_device *md;
};
struct dm_keyslot_evict_args {
const struct blk_crypto_key *key;
int err;
};
static int dm_keyslot_evict_callback(struct dm_target *ti, struct dm_dev *dev,
sector_t start, sector_t len, void *data)
{
struct dm_keyslot_evict_args *args = data;
int err;
const struct blk_crypto_key *key = data;
err = blk_crypto_evict_key(dev->bdev, args->key);
if (!args->err)
args->err = err;
/* Always try to evict the key from all devices. */
blk_crypto_evict_key(dev->bdev, key);
return 0;
}
@ -1229,7 +1220,6 @@ static int dm_keyslot_evict(struct blk_crypto_profile *profile,
{
struct mapped_device *md =
container_of(profile, struct dm_crypto_profile, profile)->md;
struct dm_keyslot_evict_args args = { key };
struct dm_table *t;
int srcu_idx;
@ -1242,11 +1232,12 @@ static int dm_keyslot_evict(struct blk_crypto_profile *profile,
if (!ti->type->iterate_devices)
continue;
ti->type->iterate_devices(ti, dm_keyslot_evict_callback, &args);
ti->type->iterate_devices(ti, dm_keyslot_evict_callback,
(void *)key);
}
dm_put_live_table(md, srcu_idx);
return args.err;
return 0;
}
static int

145
drivers/md/md-bitmap.c
View File

@ -209,76 +209,99 @@ static struct md_rdev *next_active_rdev(struct md_rdev *rdev, struct mddev *mdde
return NULL;
}
static int write_sb_page(struct bitmap *bitmap, struct page *page, int wait)
static unsigned int optimal_io_size(struct block_device *bdev,
unsigned int last_page_size,
unsigned int io_size)
{
if (bdev_io_opt(bdev) > bdev_logical_block_size(bdev))
return roundup(last_page_size, bdev_io_opt(bdev));
return io_size;
}
static unsigned int bitmap_io_size(unsigned int io_size, unsigned int opt_size,
sector_t start, sector_t boundary)
{
if (io_size != opt_size &&
start + opt_size / SECTOR_SIZE <= boundary)
return opt_size;
if (start + io_size / SECTOR_SIZE <= boundary)
return io_size;
/* Overflows boundary */
return 0;
}
static int __write_sb_page(struct md_rdev *rdev, struct bitmap *bitmap,
struct page *page)
{
struct md_rdev *rdev;
struct block_device *bdev;
struct mddev *mddev = bitmap->mddev;
struct bitmap_storage *store = &bitmap->storage;
sector_t offset = mddev->bitmap_info.offset;
sector_t ps, sboff, doff;
unsigned int size = PAGE_SIZE;
unsigned int opt_size = PAGE_SIZE;
restart:
rdev = NULL;
while ((rdev = next_active_rdev(rdev, mddev)) != NULL) {
int size = PAGE_SIZE;
loff_t offset = mddev->bitmap_info.offset;
bdev = (rdev->meta_bdev) ? rdev->meta_bdev : rdev->bdev;
if (page->index == store->file_pages - 1) {
unsigned int last_page_size = store->bytes & (PAGE_SIZE - 1);
bdev = (rdev->meta_bdev) ? rdev->meta_bdev : rdev->bdev;
if (page->index == store->file_pages-1) {
int last_page_size = store->bytes & (PAGE_SIZE-1);
if (last_page_size == 0)
last_page_size = PAGE_SIZE;
size = roundup(last_page_size,
bdev_logical_block_size(bdev));
}
/* Just make sure we aren't corrupting data or
* metadata
*/
if (mddev->external) {
/* Bitmap could be anywhere. */
if (rdev->sb_start + offset + (page->index
* (PAGE_SIZE/512))
> rdev->data_offset
&&
rdev->sb_start + offset
< (rdev->data_offset + mddev->dev_sectors
+ (PAGE_SIZE/512)))
goto bad_alignment;
} else if (offset < 0) {
/* DATA BITMAP METADATA */
if (offset
+ (long)(page->index * (PAGE_SIZE/512))
+ size/512 > 0)
/* bitmap runs in to metadata */
goto bad_alignment;
if (rdev->data_offset + mddev->dev_sectors
> rdev->sb_start + offset)
/* data runs in to bitmap */
goto bad_alignment;
} else if (rdev->sb_start < rdev->data_offset) {
/* METADATA BITMAP DATA */
if (rdev->sb_start
+ offset
+ page->index*(PAGE_SIZE/512) + size/512
> rdev->data_offset)
/* bitmap runs in to data */
goto bad_alignment;
} else {
/* DATA METADATA BITMAP - no problems */
}
md_super_write(mddev, rdev,
rdev->sb_start + offset
+ page->index * (PAGE_SIZE/512),
size,
page);
if (last_page_size == 0)
last_page_size = PAGE_SIZE;
size = roundup(last_page_size, bdev_logical_block_size(bdev));
opt_size = optimal_io_size(bdev, last_page_size, size);
}
if (wait && md_super_wait(mddev) < 0)
goto restart;
return 0;
ps = page->index * PAGE_SIZE / SECTOR_SIZE;
sboff = rdev->sb_start + offset;
doff = rdev->data_offset;
bad_alignment:
return -EINVAL;
/* Just make sure we aren't corrupting data or metadata */
if (mddev->external) {
/* Bitmap could be anywhere. */
if (sboff + ps > doff &&
sboff < (doff + mddev->dev_sectors + PAGE_SIZE / SECTOR_SIZE))
return -EINVAL;
} else if (offset < 0) {
/* DATA BITMAP METADATA */
size = bitmap_io_size(size, opt_size, offset + ps, 0);
if (size == 0)
/* bitmap runs in to metadata */
return -EINVAL;
if (doff + mddev->dev_sectors > sboff)
/* data runs in to bitmap */
return -EINVAL;
} else if (rdev->sb_start < rdev->data_offset) {
/* METADATA BITMAP DATA */
size = bitmap_io_size(size, opt_size, sboff + ps, doff);
if (size == 0)
/* bitmap runs in to data */
return -EINVAL;
} else {
/* DATA METADATA BITMAP - no problems */
}
md_super_write(mddev, rdev, sboff + ps, (int) size, page);
return 0;
}
static int write_sb_page(struct bitmap *bitmap, struct page *page, int wait)
{
struct md_rdev *rdev;
struct mddev *mddev = bitmap->mddev;
int ret;
do {
rdev = NULL;
while ((rdev = next_active_rdev(rdev, mddev)) != NULL) {
ret = __write_sb_page(rdev, bitmap, page);
if (ret)
return ret;
}
} while (wait && md_super_wait(mddev) < 0);
return 0;
}
static void md_bitmap_file_kick(struct bitmap *bitmap);

14
drivers/md/md-linear.c
View File

@ -223,7 +223,8 @@ static bool linear_make_request(struct mddev *mddev, struct bio *bio)
bio_sector < start_sector))
goto out_of_bounds;
if (unlikely(is_mddev_broken(tmp_dev->rdev, "linear"))) {
if (unlikely(is_rdev_broken(tmp_dev->rdev))) {
md_error(mddev, tmp_dev->rdev);
bio_io_error(bio);
return true;
}
@ -270,6 +271,16 @@ static void linear_status (struct seq_file *seq, struct mddev *mddev)
seq_printf(seq, " %dk rounding", mddev->chunk_sectors / 2);
}
static void linear_error(struct mddev *mddev, struct md_rdev *rdev)
{
if (!test_and_set_bit(MD_BROKEN, &mddev->flags)) {
char *md_name = mdname(mddev);
pr_crit("md/linear%s: Disk failure on %pg detected, failing array.\n",
md_name, rdev->bdev);
}
}
static void linear_quiesce(struct mddev *mddev, int state)
{
}
@ -286,6 +297,7 @@ static struct md_personality linear_personality =
.hot_add_disk = linear_add,
.size = linear_size,
.quiesce = linear_quiesce,
.error_handler = linear_error,
};
static int __init linear_init (void)

27
drivers/md/md.c
View File

@ -78,7 +78,7 @@
static LIST_HEAD(pers_list);
static DEFINE_SPINLOCK(pers_lock);
static struct kobj_type md_ktype;
static const struct kobj_type md_ktype;
struct md_cluster_operations *md_cluster_ops;
EXPORT_SYMBOL(md_cluster_ops);
@ -3600,7 +3600,7 @@ static const struct sysfs_ops rdev_sysfs_ops = {
.show = rdev_attr_show,
.store = rdev_attr_store,
};
static struct kobj_type rdev_ktype = {
static const struct kobj_type rdev_ktype = {
.release = rdev_free,
.sysfs_ops = &rdev_sysfs_ops,
.default_groups = rdev_default_groups,
@ -5558,7 +5558,7 @@ static const struct sysfs_ops md_sysfs_ops = {
.show = md_attr_show,
.store = md_attr_store,
};
static struct kobj_type md_ktype = {
static const struct kobj_type md_ktype = {
.release = md_kobj_release,
.sysfs_ops = &md_sysfs_ops,
.default_groups = md_attr_groups,
@ -7974,6 +7974,9 @@ void md_error(struct mddev *mddev, struct md_rdev *rdev)
return;
mddev->pers->error_handler(mddev, rdev);
if (mddev->pers->level == 0 || mddev->pers->level == LEVEL_LINEAR)
return;
if (mddev->degraded && !test_bit(MD_BROKEN, &mddev->flags))
set_bit(MD_RECOVERY_RECOVER, &mddev->recovery);
sysfs_notify_dirent_safe(rdev->sysfs_state);
@ -8029,16 +8032,16 @@ static int status_resync(struct seq_file *seq, struct mddev *mddev)
} else if (resync > max_sectors) {
resync = max_sectors;
} else {
resync -= atomic_read(&mddev->recovery_active);
if (resync < MD_RESYNC_ACTIVE) {
/*
* Resync has started, but the subtraction has
* yielded one of the special values. Force it
* to active to ensure the status reports an
* active resync.
*/
res = atomic_read(&mddev->recovery_active);
/*
* Resync has started, but the subtraction has overflowed or
* yielded one of the special values. Force it to active to
* ensure the status reports an active resync.
*/
if (resync < res || resync - res < MD_RESYNC_ACTIVE)
resync = MD_RESYNC_ACTIVE;
}
else
resync -= res;
}
if (resync == MD_RESYNC_NONE) {

10
drivers/md/md.h
View File

@ -790,15 +790,9 @@ extern void mddev_destroy_serial_pool(struct mddev *mddev, struct md_rdev *rdev,
struct md_rdev *md_find_rdev_nr_rcu(struct mddev *mddev, int nr);
struct md_rdev *md_find_rdev_rcu(struct mddev *mddev, dev_t dev);
static inline bool is_mddev_broken(struct md_rdev *rdev, const char *md_type)
static inline bool is_rdev_broken(struct md_rdev *rdev)
{
if (!disk_live(rdev->bdev->bd_disk)) {
if (!test_and_set_bit(MD_BROKEN, &rdev->mddev->flags))
pr_warn("md: %s: %s array has a missing/failed member\n",
mdname(rdev->mddev), md_type);
return true;
}
return false;
return !disk_live(rdev->bdev->bd_disk);
}
static inline void rdev_dec_pending(struct md_rdev *rdev, struct mddev *mddev)

14
drivers/md/raid0.c
View File

@ -569,8 +569,9 @@ static bool raid0_make_request(struct mddev *mddev, struct bio *bio)
return true;
}
if (unlikely(is_mddev_broken(tmp_dev, "raid0"))) {
if (unlikely(is_rdev_broken(tmp_dev))) {
bio_io_error(bio);
md_error(mddev, tmp_dev);
return true;
}
@ -592,6 +593,16 @@ static void raid0_status(struct seq_file *seq, struct mddev *mddev)
return;
}
static void raid0_error(struct mddev *mddev, struct md_rdev *rdev)
{
if (!test_and_set_bit(MD_BROKEN, &mddev->flags)) {
char *md_name = mdname(mddev);
pr_crit("md/raid0%s: Disk failure on %pg detected, failing array.\n",
md_name, rdev->bdev);
}
}
static void *raid0_takeover_raid45(struct mddev *mddev)
{
struct md_rdev *rdev;
@ -767,6 +778,7 @@ static struct md_personality raid0_personality=
.size = raid0_size,
.takeover = raid0_takeover,
.quiesce = raid0_quiesce,
.error_handler = raid0_error,
};
static int __init raid0_init (void)

102
drivers/md/raid10.c
View File

@ -952,7 +952,9 @@ static void flush_pending_writes(struct r10conf *conf)
static void raise_barrier(struct r10conf *conf, int force)
{
write_seqlock_irq(&conf->resync_lock);
BUG_ON(force && !conf->barrier);
if (WARN_ON_ONCE(force && !conf->barrier))
force = false;
/* Wait until no block IO is waiting (unless 'force') */
wait_event_barrier(conf, force || !conf->nr_waiting);
@ -995,11 +997,15 @@ static bool stop_waiting_barrier(struct r10conf *conf)
(!bio_list_empty(&bio_list[0]) || !bio_list_empty(&bio_list[1])))
return true;
/* move on if recovery thread is blocked by us */
if (conf->mddev->thread->tsk == current &&
test_bit(MD_RECOVERY_RUNNING, &conf->mddev->recovery) &&
conf->nr_queued > 0)
/*
* move on if io is issued from raid10d(), nr_pending is not released
* from original io(see handle_read_error()). All raise barrier is
* blocked until this io is done.
*/
if (conf->mddev->thread->tsk == current) {
WARN_ON_ONCE(atomic_read(&conf->nr_pending) == 0);
return true;
}
return false;
}
@ -1244,7 +1250,8 @@ static void raid10_read_request(struct mddev *mddev, struct bio *bio,
}
slot = r10_bio->read_slot;
if (blk_queue_io_stat(bio->bi_bdev->bd_disk->queue))
if (!r10_bio->start_time &&
blk_queue_io_stat(bio->bi_bdev->bd_disk->queue))
r10_bio->start_time = bio_start_io_acct(bio);
read_bio = bio_alloc_clone(rdev->bdev, bio, gfp, &mddev->bio_set);
@ -1574,6 +1581,7 @@ static void __make_request(struct mddev *mddev, struct bio *bio, int sectors)
r10_bio->sector = bio->bi_iter.bi_sector;
r10_bio->state = 0;
r10_bio->read_slot = -1;
r10_bio->start_time = 0;
memset(r10_bio->devs, 0, sizeof(r10_bio->devs[0]) *
conf->geo.raid_disks);
@ -1626,7 +1634,7 @@ static void raid10_end_discard_request(struct bio *bio)
/*
* raid10_remove_disk uses smp_mb to make sure rdev is set to
* replacement before setting replacement to NULL. It can read
* rdev first without barrier protect even replacment is NULL
* rdev first without barrier protect even replacement is NULL
*/
smp_rmb();
rdev = conf->mirrors[dev].rdev;
@ -2609,11 +2617,22 @@ static void recovery_request_write(struct mddev *mddev, struct r10bio *r10_bio)
{
struct r10conf *conf = mddev->private;
int d;
struct bio *wbio, *wbio2;
struct bio *wbio = r10_bio->devs[1].bio;
struct bio *wbio2 = r10_bio->devs[1].repl_bio;
/* Need to test wbio2->bi_end_io before we call
* submit_bio_noacct as if the former is NULL,
* the latter is free to free wbio2.
*/
if (wbio2 && !wbio2->bi_end_io)
wbio2 = NULL;
if (!test_bit(R10BIO_Uptodate, &r10_bio->state)) {
fix_recovery_read_error(r10_bio);
end_sync_request(r10_bio);
if (wbio->bi_end_io)
end_sync_request(r10_bio);
if (wbio2)
end_sync_request(r10_bio);
return;
}
@ -2622,14 +2641,6 @@ static void recovery_request_write(struct mddev *mddev, struct r10bio *r10_bio)
* and submit the write request
*/
d = r10_bio->devs[1].devnum;
wbio = r10_bio->devs[1].bio;
wbio2 = r10_bio->devs[1].repl_bio;
/* Need to test wbio2->bi_end_io before we call
* submit_bio_noacct as if the former is NULL,
* the latter is free to free wbio2.
*/
if (wbio2 && !wbio2->bi_end_io)
wbio2 = NULL;
if (wbio->bi_end_io) {
atomic_inc(&conf->mirrors[d].rdev->nr_pending);
md_sync_acct(conf->mirrors[d].rdev->bdev, bio_sectors(wbio));
@ -2978,9 +2989,13 @@ static void handle_read_error(struct mddev *mddev, struct r10bio *r10_bio)
md_error(mddev, rdev);
rdev_dec_pending(rdev, mddev);
allow_barrier(conf);
r10_bio->state = 0;
raid10_read_request(mddev, r10_bio->master_bio, r10_bio);
/*
* allow_barrier after re-submit to ensure no sync io
* can be issued while regular io pending.
*/
allow_barrier(conf);
}
static void handle_write_completed(struct r10conf *conf, struct r10bio *r10_bio)
@ -3289,10 +3304,6 @@ static sector_t raid10_sync_request(struct mddev *mddev, sector_t sector_nr,
sector_t chunk_mask = conf->geo.chunk_mask;
int page_idx = 0;
if (!mempool_initialized(&conf->r10buf_pool))
if (init_resync(conf))
return 0;
/*
* Allow skipping a full rebuild for incremental assembly
* of a clean array, like RAID1 does.
@ -3308,6 +3319,10 @@ static sector_t raid10_sync_request(struct mddev *mddev, sector_t sector_nr,
return mddev->dev_sectors - sector_nr;
}
if (!mempool_initialized(&conf->r10buf_pool))
if (init_resync(conf))
return 0;
skipped:
max_sector = mddev->dev_sectors;
if (test_bit(MD_RECOVERY_SYNC, &mddev->recovery) ||
@ -4004,6 +4019,20 @@ static int setup_geo(struct geom *geo, struct mddev *mddev, enum geo_type new)
return nc*fc;
}
static void raid10_free_conf(struct r10conf *conf)
{
if (!conf)
return;
mempool_exit(&conf->r10bio_pool);
kfree(conf->mirrors);
kfree(conf->mirrors_old);
kfree(conf->mirrors_new);
safe_put_page(conf->tmppage);
bioset_exit(&conf->bio_split);
kfree(conf);
}
static struct r10conf *setup_conf(struct mddev *mddev)
{
struct r10conf *conf = NULL;
@ -4086,13 +4115,7 @@ static struct r10conf *setup_conf(struct mddev *mddev)
return conf;
out:
if (conf) {
mempool_exit(&conf->r10bio_pool);
kfree(conf->mirrors);
safe_put_page(conf->tmppage);
bioset_exit(&conf->bio_split);
kfree(conf);
}
raid10_free_conf(conf);
return ERR_PTR(err);
}
@ -4129,6 +4152,9 @@ static int raid10_run(struct mddev *mddev)
if (!conf)
goto out;
mddev->thread = conf->thread;
conf->thread = NULL;
if (mddev_is_clustered(conf->mddev)) {
int fc, fo;
@ -4141,9 +4167,6 @@ static int raid10_run(struct mddev *mddev)
}
}
mddev->thread = conf->thread;
conf->thread = NULL;
if (mddev->queue) {
blk_queue_max_write_zeroes_sectors(mddev->queue, 0);
blk_queue_io_min(mddev->queue, mddev->chunk_sectors << 9);
@ -4283,10 +4306,7 @@ static int raid10_run(struct mddev *mddev)
out_free_conf:
md_unregister_thread(&mddev->thread);
mempool_exit(&conf->r10bio_pool);
safe_put_page(conf->tmppage);
kfree(conf->mirrors);
kfree(conf);
raid10_free_conf(conf);
mddev->private = NULL;
out:
return -EIO;
@ -4294,15 +4314,7 @@ static int raid10_run(struct mddev *mddev)
static void raid10_free(struct mddev *mddev, void *priv)
{
struct r10conf *conf = priv;
mempool_exit(&conf->r10bio_pool);
safe_put_page(conf->tmppage);
kfree(conf->mirrors);
kfree(conf->mirrors_old);
kfree(conf->mirrors_new);
bioset_exit(&conf->bio_split);
kfree(conf);
raid10_free_conf(priv);
}
static void raid10_quiesce(struct mddev *mddev, int quiesce)

5
drivers/md/raid5.c
View File

@ -7716,7 +7716,6 @@ static void raid5_set_io_opt(struct r5conf *conf)
static int raid5_run(struct mddev *mddev)
{
struct r5conf *conf;
int working_disks = 0;
int dirty_parity_disks = 0;
struct md_rdev *rdev;
struct md_rdev *journal_dev = NULL;
@ -7912,10 +7911,8 @@ static int raid5_run(struct mddev *mddev)
pr_warn("md: cannot handle concurrent replacement and reshape.\n");
goto abort;
}
if (test_bit(In_sync, &rdev->flags)) {
working_disks++;
if (test_bit(In_sync, &rdev->flags))
continue;
}
/* This disc is not fully in-sync. However if it
* just stored parity (beyond the recovery_offset),
* when we don't need to be concerned about the

8
drivers/nvme/host/apple.c
View File

@ -209,16 +209,16 @@ static inline struct apple_nvme *queue_to_apple_nvme(struct apple_nvme_queue *q)
{
if (q->is_adminq)
return container_of(q, struct apple_nvme, adminq);
else
return container_of(q, struct apple_nvme, ioq);
return container_of(q, struct apple_nvme, ioq);
}
static unsigned int apple_nvme_queue_depth(struct apple_nvme_queue *q)
{
if (q->is_adminq)
return APPLE_NVME_AQ_DEPTH;
else
return APPLE_ANS_MAX_QUEUE_DEPTH;
return APPLE_ANS_MAX_QUEUE_DEPTH;
}
static void apple_nvme_rtkit_crashed(void *cookie)

9
drivers/nvme/host/core.c
View File

@ -450,8 +450,8 @@ bool nvme_cancel_request(struct request *req, void *data)
dev_dbg_ratelimited(((struct nvme_ctrl *) data)->device,
"Cancelling I/O %d", req->tag);
/* don't abort one completed request */
if (blk_mq_request_completed(req))
/* don't abort one completed or idle request */
if (blk_mq_rq_state(req) != MQ_RQ_IN_FLIGHT)
return true;
nvme_req(req)->status = NVME_SC_HOST_ABORTED_CMD;
@ -4819,8 +4819,6 @@ static bool nvme_handle_aen_notice(struct nvme_ctrl *ctrl, u32 result)
u32 aer_notice_type = nvme_aer_subtype(result);
bool requeue = true;
trace_nvme_async_event(ctrl, aer_notice_type);
switch (aer_notice_type) {
case NVME_AER_NOTICE_NS_CHANGED:
set_bit(NVME_AER_NOTICE_NS_CHANGED, &ctrl->events);
@ -4856,7 +4854,6 @@ static bool nvme_handle_aen_notice(struct nvme_ctrl *ctrl, u32 result)
static void nvme_handle_aer_persistent_error(struct nvme_ctrl *ctrl)
{
trace_nvme_async_event(ctrl, NVME_AER_ERROR);
dev_warn(ctrl->device, "resetting controller due to AER\n");
nvme_reset_ctrl(ctrl);
}
@ -4872,6 +4869,7 @@ void nvme_complete_async_event(struct nvme_ctrl *ctrl, __le16 status,
if (le16_to_cpu(status) >> 1 != NVME_SC_SUCCESS)
return;
trace_nvme_async_event(ctrl, result);
switch (aer_type) {
case NVME_AER_NOTICE:
requeue = nvme_handle_aen_notice(ctrl, result);
@ -4889,7 +4887,6 @@ void nvme_complete_async_event(struct nvme_ctrl *ctrl, __le16 status,
case NVME_AER_SMART:
case NVME_AER_CSS:
case NVME_AER_VS:
trace_nvme_async_event(ctrl, aer_type);
ctrl->aen_result = result;
break;
default:

6
drivers/nvme/host/pci.c
View File

@ -5,7 +5,6 @@
*/
#include <linux/acpi.h>
#include <linux/aer.h>
#include <linux/async.h>
#include <linux/blkdev.h>
#include <linux/blk-mq.h>
@ -2535,7 +2534,6 @@ static int nvme_pci_enable(struct nvme_dev *dev)
nvme_map_cmb(dev);
pci_enable_pcie_error_reporting(pdev);
pci_save_state(pdev);
result = nvme_pci_configure_admin_queue(dev);
@ -2600,10 +2598,8 @@ static void nvme_dev_disable(struct nvme_dev *dev, bool shutdown)
nvme_suspend_io_queues(dev);
nvme_suspend_queue(dev, 0);
pci_free_irq_vectors(pdev);
if (pci_is_enabled(pdev)) {
pci_disable_pcie_error_reporting(pdev);
if (pci_is_enabled(pdev))
pci_disable_device(pdev);
}
nvme_reap_pending_cqes(dev);
nvme_cancel_tagset(&dev->ctrl);

19
drivers/nvme/host/rdma.c
View File

@ -12,7 +12,6 @@
#include <linux/string.h>
#include <linux/atomic.h>
#include <linux/blk-mq.h>
#include <linux/blk-mq-rdma.h>
#include <linux/blk-integrity.h>
#include <linux/types.h>
#include <linux/list.h>
@ -464,7 +463,6 @@ static int nvme_rdma_create_cq(struct ib_device *ibdev,
struct nvme_rdma_queue *queue)
{
int ret, comp_vector, idx = nvme_rdma_queue_idx(queue);
enum ib_poll_context poll_ctx;
/*
* Spread I/O queues completion vectors according their queue index.
@ -473,15 +471,12 @@ static int nvme_rdma_create_cq(struct ib_device *ibdev,
comp_vector = (idx == 0 ? idx : idx - 1) % ibdev->num_comp_vectors;
/* Polling queues need direct cq polling context */
if (nvme_rdma_poll_queue(queue)) {
poll_ctx = IB_POLL_DIRECT;
if (nvme_rdma_poll_queue(queue))
queue->ib_cq = ib_alloc_cq(ibdev, queue, queue->cq_size,
comp_vector, poll_ctx);
} else {
poll_ctx = IB_POLL_SOFTIRQ;
comp_vector, IB_POLL_DIRECT);
else
queue->ib_cq = ib_cq_pool_get(ibdev, queue->cq_size,
comp_vector, poll_ctx);
}
comp_vector, IB_POLL_SOFTIRQ);
if (IS_ERR(queue->ib_cq)) {
ret = PTR_ERR(queue->ib_cq);
@ -2163,10 +2158,8 @@ static void nvme_rdma_map_queues(struct blk_mq_tag_set *set)
ctrl->io_queues[HCTX_TYPE_DEFAULT];
set->map[HCTX_TYPE_READ].queue_offset = 0;
}
blk_mq_rdma_map_queues(&set->map[HCTX_TYPE_DEFAULT],
ctrl->device->dev, 0);
blk_mq_rdma_map_queues(&set->map[HCTX_TYPE_READ],
ctrl->device->dev, 0);
blk_mq_map_queues(&set->map[HCTX_TYPE_DEFAULT]);
blk_mq_map_queues(&set->map[HCTX_TYPE_READ]);
if (opts->nr_poll_queues && ctrl->io_queues[HCTX_TYPE_POLL]) {
/* map dedicated poll queues only if we have queues left */

3
drivers/nvme/host/tcp.c
View File

@ -888,6 +888,9 @@ static int nvme_tcp_recv_skb(read_descriptor_t *desc, struct sk_buff *skb,
size_t consumed = len;
int result;
if (unlikely(!queue->rd_enabled))
return -EFAULT;
while (len) {
switch (nvme_tcp_recv_state(queue)) {
case NVME_TCP_RECV_PDU:

15
drivers/nvme/host/trace.h
View File

@ -127,15 +127,12 @@ TRACE_EVENT(nvme_async_event,
),
TP_printk("nvme%d: NVME_AEN=%#08x [%s]",
__entry->ctrl_id, __entry->result,
__print_symbolic(__entry->result,
aer_name(NVME_AER_NOTICE_NS_CHANGED),
aer_name(NVME_AER_NOTICE_ANA),
aer_name(NVME_AER_NOTICE_FW_ACT_STARTING),
aer_name(NVME_AER_NOTICE_DISC_CHANGED),
aer_name(NVME_AER_ERROR),
aer_name(NVME_AER_SMART),
aer_name(NVME_AER_CSS),
aer_name(NVME_AER_VS))
__print_symbolic(__entry->result & 0x7,
aer_name(NVME_AER_ERROR),
aer_name(NVME_AER_SMART),
aer_name(NVME_AER_NOTICE),
aer_name(NVME_AER_CSS),
aer_name(NVME_AER_VS))
)
);

83
drivers/nvme/target/admin-cmd.c
View File

@ -668,21 +668,11 @@ static void nvmet_execute_identify_desclist(struct nvmet_req *req)
nvmet_req_complete(req, status);
}
static bool nvmet_handle_identify_desclist(struct nvmet_req *req)
static void nvmet_execute_identify_ctrl_nvm(struct nvmet_req *req)
{
switch (req->cmd->identify.csi) {
case NVME_CSI_NVM:
nvmet_execute_identify_desclist(req);
return true;
case NVME_CSI_ZNS:
if (IS_ENABLED(CONFIG_BLK_DEV_ZONED)) {
nvmet_execute_identify_desclist(req);
return true;
}
return false;
default:
return false;
}
/* Not supported: return zeroes */
nvmet_req_complete(req,
nvmet_zero_sgl(req, 0, sizeof(struct nvme_id_ctrl_nvm)));
}
static void nvmet_execute_identify(struct nvmet_req *req)
@ -692,54 +682,49 @@ static void nvmet_execute_identify(struct nvmet_req *req)
switch (req->cmd->identify.cns) {
case NVME_ID_CNS_NS:
switch (req->cmd->identify.csi) {
case NVME_CSI_NVM:
return nvmet_execute_identify_ns(req);
default:
break;
}
break;
case NVME_ID_CNS_CS_NS:
if (IS_ENABLED(CONFIG_BLK_DEV_ZONED)) {
switch (req->cmd->identify.csi) {
case NVME_CSI_ZNS:
return nvmet_execute_identify_cns_cs_ns(req);
default:
break;
}
}
break;
nvmet_execute_identify_ns(req);
return;
case NVME_ID_CNS_CTRL:
nvmet_execute_identify_ctrl(req);
return;
case NVME_ID_CNS_NS_ACTIVE_LIST:
nvmet_execute_identify_nslist(req);
return;
case NVME_ID_CNS_NS_DESC_LIST:
nvmet_execute_identify_desclist(req);
return;
case NVME_ID_CNS_CS_NS:
switch (req->cmd->identify.csi) {
case NVME_CSI_NVM:
return nvmet_execute_identify_ctrl(req);
/* Not supported */
break;
case NVME_CSI_ZNS:
if (IS_ENABLED(CONFIG_BLK_DEV_ZONED)) {
nvmet_execute_identify_ns_zns(req);
return;
}
break;
}
break;
case NVME_ID_CNS_CS_CTRL:
if (IS_ENABLED(CONFIG_BLK_DEV_ZONED)) {
switch (req->cmd->identify.csi) {
case NVME_CSI_ZNS:
return nvmet_execute_identify_cns_cs_ctrl(req);
default:
break;
}
}
break;
case NVME_ID_CNS_NS_ACTIVE_LIST:
switch (req->cmd->identify.csi) {
case NVME_CSI_NVM:
return nvmet_execute_identify_nslist(req);
default:
nvmet_execute_identify_ctrl_nvm(req);
return;
case NVME_CSI_ZNS:
if (IS_ENABLED(CONFIG_BLK_DEV_ZONED)) {
nvmet_execute_identify_ctrl_zns(req);
return;
}
break;
}
break;
case NVME_ID_CNS_NS_DESC_LIST:
if (nvmet_handle_identify_desclist(req) == true)
return;
break;
}
nvmet_req_cns_error_complete(req);
pr_debug("unhandled identify cns %d on qid %d\n",
req->cmd->identify.cns, req->sq->qid);
req->error_loc = offsetof(struct nvme_identify, cns);
nvmet_req_complete(req, NVME_SC_INVALID_FIELD | NVME_SC_DNR);
}
/*

48
drivers/nvme/target/fcloop.c
View File

@ -614,10 +614,11 @@ fcloop_fcp_recv_work(struct work_struct *work)
struct fcloop_fcpreq *tfcp_req =
container_of(work, struct fcloop_fcpreq, fcp_rcv_work);
struct nvmefc_fcp_req *fcpreq = tfcp_req->fcpreq;
unsigned long flags;
int ret = 0;
bool aborted = false;
spin_lock_irq(&tfcp_req->reqlock);
spin_lock_irqsave(&tfcp_req->reqlock, flags);
switch (tfcp_req->inistate) {
case INI_IO_START:
tfcp_req->inistate = INI_IO_ACTIVE;
@ -626,11 +627,11 @@ fcloop_fcp_recv_work(struct work_struct *work)
aborted = true;
break;
default:
spin_unlock_irq(&tfcp_req->reqlock);
spin_unlock_irqrestore(&tfcp_req->reqlock, flags);
WARN_ON(1);
return;
}
spin_unlock_irq(&tfcp_req->reqlock);
spin_unlock_irqrestore(&tfcp_req->reqlock, flags);
if (unlikely(aborted))
ret = -ECANCELED;
@ -655,8 +656,9 @@ fcloop_fcp_abort_recv_work(struct work_struct *work)
container_of(work, struct fcloop_fcpreq, abort_rcv_work);
struct nvmefc_fcp_req *fcpreq;
bool completed = false;
unsigned long flags;
spin_lock_irq(&tfcp_req->reqlock);
spin_lock_irqsave(&tfcp_req->reqlock, flags);
fcpreq = tfcp_req->fcpreq;
switch (tfcp_req->inistate) {
case INI_IO_ABORTED:
@ -665,11 +667,11 @@ fcloop_fcp_abort_recv_work(struct work_struct *work)
completed = true;
break;
default:
spin_unlock_irq(&tfcp_req->reqlock);
spin_unlock_irqrestore(&tfcp_req->reqlock, flags);
WARN_ON(1);
return;
}
spin_unlock_irq(&tfcp_req->reqlock);
spin_unlock_irqrestore(&tfcp_req->reqlock, flags);
if (unlikely(completed)) {
/* remove reference taken in original abort downcall */
@ -681,9 +683,9 @@ fcloop_fcp_abort_recv_work(struct work_struct *work)
nvmet_fc_rcv_fcp_abort(tfcp_req->tport->targetport,
&tfcp_req->tgt_fcp_req);
spin_lock_irq(&tfcp_req->reqlock);
spin_lock_irqsave(&tfcp_req->reqlock, flags);
tfcp_req->fcpreq = NULL;
spin_unlock_irq(&tfcp_req->reqlock);
spin_unlock_irqrestore(&tfcp_req->reqlock, flags);
fcloop_call_host_done(fcpreq, tfcp_req, -ECANCELED);
/* call_host_done releases reference for abort downcall */
@ -699,11 +701,12 @@ fcloop_tgt_fcprqst_done_work(struct work_struct *work)
struct fcloop_fcpreq *tfcp_req =
container_of(work, struct fcloop_fcpreq, tio_done_work);
struct nvmefc_fcp_req *fcpreq;
unsigned long flags;
spin_lock_irq(&tfcp_req->reqlock);
spin_lock_irqsave(&tfcp_req->reqlock, flags);
fcpreq = tfcp_req->fcpreq;
tfcp_req->inistate = INI_IO_COMPLETED;
spin_unlock_irq(&tfcp_req->reqlock);
spin_unlock_irqrestore(&tfcp_req->reqlock, flags);
fcloop_call_host_done(fcpreq, tfcp_req, tfcp_req->status);
}
@ -807,13 +810,14 @@ fcloop_fcp_op(struct nvmet_fc_target_port *tgtport,
u32 rsplen = 0, xfrlen = 0;
int fcp_err = 0, active, aborted;
u8 op = tgt_fcpreq->op;
unsigned long flags;
spin_lock_irq(&tfcp_req->reqlock);
spin_lock_irqsave(&tfcp_req->reqlock, flags);
fcpreq = tfcp_req->fcpreq;
active = tfcp_req->active;
aborted = tfcp_req->aborted;
tfcp_req->active = true;
spin_unlock_irq(&tfcp_req->reqlock);
spin_unlock_irqrestore(&tfcp_req->reqlock, flags);
if (unlikely(active))
/* illegal - call while i/o active */
@ -821,9 +825,9 @@ fcloop_fcp_op(struct nvmet_fc_target_port *tgtport,
if (unlikely(aborted)) {
/* target transport has aborted i/o prior */
spin_lock_irq(&tfcp_req->reqlock);
spin_lock_irqsave(&tfcp_req->reqlock, flags);
tfcp_req->active = false;
spin_unlock_irq(&tfcp_req->reqlock);
spin_unlock_irqrestore(&tfcp_req->reqlock, flags);
tgt_fcpreq->transferred_length = 0;
tgt_fcpreq->fcp_error = -ECANCELED;
tgt_fcpreq->done(tgt_fcpreq);
@ -880,9 +884,9 @@ fcloop_fcp_op(struct nvmet_fc_target_port *tgtport,
break;
}
spin_lock_irq(&tfcp_req->reqlock);
spin_lock_irqsave(&tfcp_req->reqlock, flags);
tfcp_req->active = false;
spin_unlock_irq(&tfcp_req->reqlock);
spin_unlock_irqrestore(&tfcp_req->reqlock, flags);
tgt_fcpreq->transferred_length = xfrlen;
tgt_fcpreq->fcp_error = fcp_err;
@ -896,15 +900,16 @@ fcloop_tgt_fcp_abort(struct nvmet_fc_target_port *tgtport,
struct nvmefc_tgt_fcp_req *tgt_fcpreq)
{
struct fcloop_fcpreq *tfcp_req = tgt_fcp_req_to_fcpreq(tgt_fcpreq);
unsigned long flags;
/*
* mark aborted only in case there were 2 threads in transport
* (one doing io, other doing abort) and only kills ops posted
* after the abort request
*/
spin_lock_irq(&tfcp_req->reqlock);
spin_lock_irqsave(&tfcp_req->reqlock, flags);
tfcp_req->aborted = true;
spin_unlock_irq(&tfcp_req->reqlock);
spin_unlock_irqrestore(&tfcp_req->reqlock, flags);
tfcp_req->status = NVME_SC_INTERNAL;
@ -946,6 +951,7 @@ fcloop_fcp_abort(struct nvme_fc_local_port *localport,
struct fcloop_ini_fcpreq *inireq = fcpreq->private;
struct fcloop_fcpreq *tfcp_req;
bool abortio = true;
unsigned long flags;
spin_lock(&inireq->inilock);
tfcp_req = inireq->tfcp_req;
@ -958,7 +964,7 @@ fcloop_fcp_abort(struct nvme_fc_local_port *localport,
return;
/* break initiator/target relationship for io */
spin_lock_irq(&tfcp_req->reqlock);
spin_lock_irqsave(&tfcp_req->reqlock, flags);
switch (tfcp_req->inistate) {
case INI_IO_START:
case INI_IO_ACTIVE:
@ -968,11 +974,11 @@ fcloop_fcp_abort(struct nvme_fc_local_port *localport,
abortio = false;
break;
default:
spin_unlock_irq(&tfcp_req->reqlock);
spin_unlock_irqrestore(&tfcp_req->reqlock, flags);
WARN_ON(1);
return;
}
spin_unlock_irq(&tfcp_req->reqlock);
spin_unlock_irqrestore(&tfcp_req->reqlock, flags);
if (abortio)
/* leave the reference while the work item is scheduled */

12
drivers/nvme/target/nvmet.h
View File

@ -581,8 +581,8 @@ bool nvmet_ns_revalidate(struct nvmet_ns *ns);
u16 blk_to_nvme_status(struct nvmet_req *req, blk_status_t blk_sts);
bool nvmet_bdev_zns_enable(struct nvmet_ns *ns);
void nvmet_execute_identify_cns_cs_ctrl(struct nvmet_req *req);
void nvmet_execute_identify_cns_cs_ns(struct nvmet_req *req);
void nvmet_execute_identify_ctrl_zns(struct nvmet_req *req);
void nvmet_execute_identify_ns_zns(struct nvmet_req *req);
void nvmet_bdev_execute_zone_mgmt_recv(struct nvmet_req *req);
void nvmet_bdev_execute_zone_mgmt_send(struct nvmet_req *req);
void nvmet_bdev_execute_zone_append(struct nvmet_req *req);
@ -687,14 +687,6 @@ static inline bool nvmet_use_inline_bvec(struct nvmet_req *req)
req->sg_cnt <= NVMET_MAX_INLINE_BIOVEC;
}
static inline void nvmet_req_cns_error_complete(struct nvmet_req *req)
{
pr_debug("unhandled identify cns %d on qid %d\n",
req->cmd->identify.cns, req->sq->qid);
req->error_loc = offsetof(struct nvme_identify, cns);
nvmet_req_complete(req, NVME_SC_INVALID_FIELD | NVME_SC_DNR);
}
static inline void nvmet_req_bio_put(struct nvmet_req *req, struct bio *bio)
{
if (bio != &req->b.inline_bio)

34
drivers/nvme/target/tcp.c
View File

@ -20,6 +20,31 @@
#define NVMET_TCP_DEF_INLINE_DATA_SIZE (4 * PAGE_SIZE)
static int param_store_val(const char *str, int *val, int min, int max)
{
int ret, new_val;
ret = kstrtoint(str, 10, &new_val);
if (ret)
return -EINVAL;
if (new_val < min || new_val > max)
return -EINVAL;
*val = new_val;
return 0;
}
static int set_params(const char *str, const struct kernel_param *kp)
{
return param_store_val(str, kp->arg, 0, INT_MAX);
}
static const struct kernel_param_ops set_param_ops = {
.set = set_params,
.get = param_get_int,
};
/* Define the socket priority to use for connections were it is desirable
* that the NIC consider performing optimized packet processing or filtering.
* A non-zero value being sufficient to indicate general consideration of any
@ -27,8 +52,8 @@
* values that may be unique for some NIC implementations.
*/
static int so_priority;
module_param(so_priority, int, 0644);
MODULE_PARM_DESC(so_priority, "nvmet tcp socket optimize priority");
device_param_cb(so_priority, &set_param_ops, &so_priority, 0644);
MODULE_PARM_DESC(so_priority, "nvmet tcp socket optimize priority: Default 0");
/* Define a time period (in usecs) that io_work() shall sample an activated
* queue before determining it to be idle. This optional module behavior
@ -36,9 +61,10 @@ MODULE_PARM_DESC(so_priority, "nvmet tcp socket optimize priority");
* using advanced interrupt moderation techniques.
*/
static int idle_poll_period_usecs;
module_param(idle_poll_period_usecs, int, 0644);
device_param_cb(idle_poll_period_usecs, &set_param_ops,
&idle_poll_period_usecs, 0644);
MODULE_PARM_DESC(idle_poll_period_usecs,
"nvmet tcp io_work poll till idle time period in usecs");
"nvmet tcp io_work poll till idle time period in usecs: Default 0");
#define NVMET_TCP_RECV_BUDGET 8
#define NVMET_TCP_SEND_BUDGET 8

20
drivers/nvme/target/zns.c
View File

@ -70,7 +70,7 @@ bool nvmet_bdev_zns_enable(struct nvmet_ns *ns)
return true;
}
void nvmet_execute_identify_cns_cs_ctrl(struct nvmet_req *req)
void nvmet_execute_identify_ctrl_zns(struct nvmet_req *req)
{
u8 zasl = req->sq->ctrl->subsys->zasl;
struct nvmet_ctrl *ctrl = req->sq->ctrl;
@ -95,9 +95,9 @@ void nvmet_execute_identify_cns_cs_ctrl(struct nvmet_req *req)
nvmet_req_complete(req, status);
}
void nvmet_execute_identify_cns_cs_ns(struct nvmet_req *req)
void nvmet_execute_identify_ns_zns(struct nvmet_req *req)
{
struct nvme_id_ns_zns *id_zns;
struct nvme_id_ns_zns *id_zns = NULL;
u64 zsze;
u16 status;
u32 mar, mor;
@ -118,16 +118,18 @@ void nvmet_execute_identify_cns_cs_ns(struct nvmet_req *req)
if (status)
goto done;
if (!bdev_is_zoned(req->ns->bdev)) {
req->error_loc = offsetof(struct nvme_identify, nsid);
goto done;
}
if (nvmet_ns_revalidate(req->ns)) {
mutex_lock(&req->ns->subsys->lock);
nvmet_ns_changed(req->ns->subsys, req->ns->nsid);
mutex_unlock(&req->ns->subsys->lock);
}
if (!bdev_is_zoned(req->ns->bdev)) {
status = NVME_SC_INVALID_FIELD | NVME_SC_DNR;
req->error_loc = offsetof(struct nvme_identify, nsid);
goto out;
}
zsze = (bdev_zone_sectors(req->ns->bdev) << 9) >>
req->ns->blksize_shift;
id_zns->lbafe[0].zsze = cpu_to_le64(zsze);
@ -148,8 +150,8 @@ void nvmet_execute_identify_cns_cs_ns(struct nvmet_req *req)
done:
status = nvmet_copy_to_sgl(req, 0, id_zns, sizeof(*id_zns));
kfree(id_zns);
out:
kfree(id_zns);
nvmet_req_complete(req, status);
}

75
drivers/s390/block/dasd.c
View File

@ -73,7 +73,8 @@ static void dasd_profile_init(struct dasd_profile *, struct dentry *);
static void dasd_profile_exit(struct dasd_profile *);
static void dasd_hosts_init(struct dentry *, struct dasd_device *);
static void dasd_hosts_exit(struct dasd_device *);
static int dasd_handle_autoquiesce(struct dasd_device *, struct dasd_ccw_req *,
unsigned int);
/*
* SECTION: Operations on the device structure.
*/
@ -1451,6 +1452,8 @@ int dasd_start_IO(struct dasd_ccw_req *cqr)
case -ENODEV:
DBF_DEV_EVENT(DBF_WARNING, device, "%s",
"start_IO: -ENODEV device gone, retry");
/* this is equivalent to CC=3 for SSCH report this to EER */
dasd_handle_autoquiesce(device, cqr, DASD_EER_STARTIO);
break;
case -EIO:
DBF_DEV_EVENT(DBF_WARNING, device, "%s",
@ -1952,6 +1955,16 @@ static void __dasd_device_process_final_queue(struct dasd_device *device,
}
}
/*
* check if device should be autoquiesced due to too many timeouts
*/
static void __dasd_device_check_autoquiesce_timeout(struct dasd_device *device,
struct dasd_ccw_req *cqr)
{
if ((device->default_retries - cqr->retries) >= device->aq_timeouts)
dasd_handle_autoquiesce(device, cqr, DASD_EER_TIMEOUTS);
}
/*
* Take a look at the first request on the ccw queue and check
* if it reached its expire time. If so, terminate the IO.
@ -1986,6 +1999,7 @@ static void __dasd_device_check_expire(struct dasd_device *device)
"remaining\n", cqr, (cqr->expires/HZ),
cqr->retries);
}
__dasd_device_check_autoquiesce_timeout(device, cqr);
}
}
@ -2325,7 +2339,7 @@ static int _dasd_sleep_on(struct dasd_ccw_req *maincqr, int interruptible)
/* Non-temporary stop condition will trigger fail fast */
if (device->stopped & ~DASD_STOPPED_PENDING &&
test_bit(DASD_CQR_FLAGS_FAILFAST, &cqr->flags) &&
(!dasd_eer_enabled(device))) {
!dasd_eer_enabled(device) && device->aq_mask == 0) {
cqr->status = DASD_CQR_FAILED;
cqr->intrc = -ENOLINK;
continue;
@ -2801,20 +2815,18 @@ static void __dasd_process_block_ccw_queue(struct dasd_block *block,
dasd_log_sense(cqr, &cqr->irb);
}
/* First of all call extended error reporting. */
if (dasd_eer_enabled(base) &&
cqr->status == DASD_CQR_FAILED) {
dasd_eer_write(base, cqr, DASD_EER_FATALERROR);
/* restart request */
/*
* First call extended error reporting and check for autoquiesce
*/
spin_lock_irqsave(get_ccwdev_lock(base->cdev), flags);
if (cqr->status == DASD_CQR_FAILED &&
dasd_handle_autoquiesce(base, cqr, DASD_EER_FATALERROR)) {
cqr->status = DASD_CQR_FILLED;
cqr->retries = 255;
spin_lock_irqsave(get_ccwdev_lock(base->cdev), flags);
dasd_device_set_stop_bits(base, DASD_STOPPED_QUIESCE);
spin_unlock_irqrestore(get_ccwdev_lock(base->cdev),
flags);
spin_unlock_irqrestore(get_ccwdev_lock(base->cdev), flags);
goto restart;
}
spin_unlock_irqrestore(get_ccwdev_lock(base->cdev), flags);
/* Process finished ERP request. */
if (cqr->refers) {
@ -2856,7 +2868,7 @@ static void __dasd_block_start_head(struct dasd_block *block)
/* Non-temporary stop condition will trigger fail fast */
if (block->base->stopped & ~DASD_STOPPED_PENDING &&
test_bit(DASD_CQR_FLAGS_FAILFAST, &cqr->flags) &&
(!dasd_eer_enabled(block->base))) {
!dasd_eer_enabled(block->base) && block->base->aq_mask == 0) {
cqr->status = DASD_CQR_FAILED;
cqr->intrc = -ENOLINK;
dasd_schedule_block_bh(block);
@ -2941,7 +2953,7 @@ static int _dasd_requeue_request(struct dasd_ccw_req *cqr)
return 0;
spin_lock_irq(&cqr->dq->lock);
req = (struct request *) cqr->callback_data;
blk_mq_requeue_request(req, false);
blk_mq_requeue_request(req, true);
spin_unlock_irq(&cqr->dq->lock);
return 0;
@ -3670,8 +3682,8 @@ int dasd_generic_last_path_gone(struct dasd_device *device)
dev_warn(&device->cdev->dev, "No operational channel path is left "
"for the device\n");
DBF_DEV_EVENT(DBF_WARNING, device, "%s", "last path gone");
/* First of all call extended error reporting. */
dasd_eer_write(device, NULL, DASD_EER_NOPATH);
/* First call extended error reporting and check for autoquiesce. */
dasd_handle_autoquiesce(device, NULL, DASD_EER_NOPATH);
if (device->state < DASD_STATE_BASIC)
return 0;
@ -3803,7 +3815,8 @@ void dasd_generic_path_event(struct ccw_device *cdev, int *path_event)
"No verified channel paths remain for the device\n");
DBF_DEV_EVENT(DBF_WARNING, device,
"%s", "last verified path gone");
dasd_eer_write(device, NULL, DASD_EER_NOPATH);
/* First call extended error reporting and check for autoquiesce. */
dasd_handle_autoquiesce(device, NULL, DASD_EER_NOPATH);
dasd_device_set_stop_bits(device,
DASD_STOPPED_DC_WAIT);
}
@ -3825,7 +3838,8 @@ EXPORT_SYMBOL_GPL(dasd_generic_verify_path);
void dasd_generic_space_exhaust(struct dasd_device *device,
struct dasd_ccw_req *cqr)
{
dasd_eer_write(device, NULL, DASD_EER_NOSPC);
/* First call extended error reporting and check for autoquiesce. */
dasd_handle_autoquiesce(device, NULL, DASD_EER_NOSPC);
if (device->state < DASD_STATE_BASIC)
return;
@ -3958,6 +3972,31 @@ void dasd_schedule_requeue(struct dasd_device *device)
}
EXPORT_SYMBOL(dasd_schedule_requeue);
static int dasd_handle_autoquiesce(struct dasd_device *device,
struct dasd_ccw_req *cqr,
unsigned int reason)
{
/* in any case write eer message with reason */
if (dasd_eer_enabled(device))
dasd_eer_write(device, cqr, reason);
if (!test_bit(reason, &device->aq_mask))
return 0;
/* notify eer about autoquiesce */
if (dasd_eer_enabled(device))
dasd_eer_write(device, NULL, DASD_EER_AUTOQUIESCE);
pr_info("%s: The DASD has been put in the quiesce state\n",
dev_name(&device->cdev->dev));
dasd_device_set_stop_bits(device, DASD_STOPPED_QUIESCE);
if (device->features & DASD_FEATURE_REQUEUEQUIESCE)
dasd_schedule_requeue(device);
return 1;
}
static struct dasd_ccw_req *dasd_generic_build_rdc(struct dasd_device *device,
int rdc_buffer_size,
int magic)

126
drivers/s390/block/dasd_devmap.c
View File

@ -50,6 +50,7 @@ struct dasd_devmap {
unsigned short features;
struct dasd_device *device;
struct dasd_copy_relation *copy;
unsigned int aq_mask;
};
/*
@ -1475,6 +1476,128 @@ dasd_eer_store(struct device *dev, struct device_attribute *attr,
static DEVICE_ATTR(eer_enabled, 0644, dasd_eer_show, dasd_eer_store);
/*
* aq_mask controls if the DASD should be quiesced on certain triggers
* The aq_mask attribute is interpreted as bitmap of the DASD_EER_* triggers.
*/
static ssize_t dasd_aq_mask_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct dasd_devmap *devmap;
unsigned int aq_mask = 0;
devmap = dasd_find_busid(dev_name(dev));
if (!IS_ERR(devmap))
aq_mask = devmap->aq_mask;
return sysfs_emit(buf, "%d\n", aq_mask);
}
static ssize_t dasd_aq_mask_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct dasd_devmap *devmap;
unsigned int val;
if (kstrtouint(buf, 0, &val) || val > DASD_EER_VALID)
return -EINVAL;
devmap = dasd_devmap_from_cdev(to_ccwdev(dev));
if (IS_ERR(devmap))
return PTR_ERR(devmap);
spin_lock(&dasd_devmap_lock);
devmap->aq_mask = val;
if (devmap->device)
devmap->device->aq_mask = devmap->aq_mask;
spin_unlock(&dasd_devmap_lock);
return count;
}
static DEVICE_ATTR(aq_mask, 0644, dasd_aq_mask_show, dasd_aq_mask_store);
/*
* aq_requeue controls if requests are returned to the blocklayer on quiesce
* or if requests are only not started
*/
static ssize_t dasd_aqr_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct dasd_devmap *devmap;
int flag;
devmap = dasd_find_busid(dev_name(dev));
if (!IS_ERR(devmap))
flag = (devmap->features & DASD_FEATURE_REQUEUEQUIESCE) != 0;
else
flag = (DASD_FEATURE_DEFAULT &
DASD_FEATURE_REQUEUEQUIESCE) != 0;
return sysfs_emit(buf, "%d\n", flag);
}
static ssize_t dasd_aqr_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
bool val;
int rc;
if (kstrtobool(buf, &val))
return -EINVAL;
rc = dasd_set_feature(to_ccwdev(dev), DASD_FEATURE_REQUEUEQUIESCE, val);
return rc ? : count;
}
static DEVICE_ATTR(aq_requeue, 0644, dasd_aqr_show, dasd_aqr_store);
/*
* aq_timeouts controls how much retries have to time out until
* a device gets autoquiesced
*/
static ssize_t
dasd_aq_timeouts_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct dasd_device *device;
int len;
device = dasd_device_from_cdev(to_ccwdev(dev));
if (IS_ERR(device))
return -ENODEV;
len = sysfs_emit(buf, "%u\n", device->aq_timeouts);
dasd_put_device(device);
return len;
}
static ssize_t
dasd_aq_timeouts_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct dasd_device *device;
unsigned int val;
device = dasd_device_from_cdev(to_ccwdev(dev));
if (IS_ERR(device))
return -ENODEV;
if ((kstrtouint(buf, 10, &val) != 0) ||
val > DASD_RETRIES_MAX || val == 0) {
dasd_put_device(device);
return -EINVAL;
}
if (val)
device->aq_timeouts = val;
dasd_put_device(device);
return count;
}
static DEVICE_ATTR(aq_timeouts, 0644, dasd_aq_timeouts_show,
dasd_aq_timeouts_store);
/*
* expiration time for default requests
*/
@ -2324,6 +2447,9 @@ static struct attribute * dasd_attrs[] = {
&dev_attr_copy_pair.attr,
&dev_attr_copy_role.attr,
&dev_attr_ping.attr,
&dev_attr_aq_mask.attr,
&dev_attr_aq_requeue.attr,
&dev_attr_aq_timeouts.attr,
NULL,
};

1
drivers/s390/block/dasd_eckd.c
View File

@ -2109,6 +2109,7 @@ dasd_eckd_check_characteristics(struct dasd_device *device)
device->default_retries = DASD_RETRIES;
device->path_thrhld = DASD_ECKD_PATH_THRHLD;
device->path_interval = DASD_ECKD_PATH_INTERVAL;
device->aq_timeouts = DASD_RETRIES_MAX;
if (private->conf.gneq) {
value = 1;

1
drivers/s390/block/dasd_eer.c
View File

@ -387,6 +387,7 @@ void dasd_eer_write(struct dasd_device *device, struct dasd_ccw_req *cqr,
break;
case DASD_EER_NOPATH:
case DASD_EER_NOSPC:
case DASD_EER_AUTOQUIESCE:
dasd_eer_write_standard_trigger(device, NULL, id);
break;
case DASD_EER_STATECHANGE:

32
drivers/s390/block/dasd_int.h
View File

@ -444,22 +444,22 @@ struct dasd_discipline {
extern struct dasd_discipline *dasd_diag_discipline_pointer;
/*
* Notification numbers for extended error reporting notifications:
* The DASD_EER_DISABLE notification is sent before a dasd_device (and it's
* eer pointer) is freed. The error reporting module needs to do all necessary
* cleanup steps.
* The DASD_EER_TRIGGER notification sends the actual error reports (triggers).
*/
#define DASD_EER_DISABLE 0
#define DASD_EER_TRIGGER 1
/* Trigger IDs for extended error reporting DASD EER and autoquiesce */
enum eer_trigger {
DASD_EER_FATALERROR = 1,
DASD_EER_NOPATH,
DASD_EER_STATECHANGE,
DASD_EER_PPRCSUSPEND,
DASD_EER_NOSPC,
DASD_EER_TIMEOUTS,
DASD_EER_STARTIO,
/* Trigger IDs for extended error reporting DASD_EER_TRIGGER notification */
#define DASD_EER_FATALERROR 1
#define DASD_EER_NOPATH 2
#define DASD_EER_STATECHANGE 3
#define DASD_EER_PPRCSUSPEND 4
#define DASD_EER_NOSPC 5
/* enum end marker, only add new trigger above */
DASD_EER_MAX,
DASD_EER_AUTOQUIESCE = 31, /* internal only */
};
#define DASD_EER_VALID ((1U << DASD_EER_MAX) - 1)
/* DASD path handling */
@ -637,6 +637,8 @@ struct dasd_device {
struct dasd_format_entry format_entry;
struct kset *paths_info;
struct dasd_copy_relation *copy;
unsigned long aq_mask;
unsigned int aq_timeouts;
};
struct dasd_block {

4
include/linux/blk-crypto.h
View File

@ -95,8 +95,8 @@ int blk_crypto_init_key(struct blk_crypto_key *blk_key, const u8 *raw_key,
int blk_crypto_start_using_key(struct block_device *bdev,
const struct blk_crypto_key *key);
int blk_crypto_evict_key(struct block_device *bdev,
const struct blk_crypto_key *key);
void blk_crypto_evict_key(struct block_device *bdev,
const struct blk_crypto_key *key);
bool blk_crypto_config_supported_natively(struct block_device *bdev,
const struct blk_crypto_config *cfg);

11
include/linux/blk-mq-rdma.h
View File

@ -1,11 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_BLK_MQ_RDMA_H
#define _LINUX_BLK_MQ_RDMA_H
struct blk_mq_tag_set;
struct ib_device;
void blk_mq_rdma_map_queues(struct blk_mq_queue_map *map,
struct ib_device *dev, int first_vec);
#endif /* _LINUX_BLK_MQ_RDMA_H */

2
include/linux/blk-mq.h
View File

@ -57,8 +57,6 @@ typedef __u32 __bitwise req_flags_t;
#define RQF_SPECIAL_PAYLOAD ((__force req_flags_t)(1 << 18))
/* The per-zone write lock is held for this request */
#define RQF_ZONE_WRITE_LOCKED ((__force req_flags_t)(1 << 19))
/* already slept for hybrid poll */
#define RQF_MQ_POLL_SLEPT ((__force req_flags_t)(1 << 20))
/* ->timeout has been called, don't expire again */
#define RQF_TIMED_OUT ((__force req_flags_t)(1 << 21))
/* queue has elevator attached */

23
include/linux/blk_types.h
View File

@ -40,26 +40,26 @@ struct bio_crypt_ctx;
struct block_device {
sector_t bd_start_sect;
sector_t bd_nr_sectors;
struct gendisk * bd_disk;
struct request_queue * bd_queue;
struct disk_stats __percpu *bd_stats;
unsigned long bd_stamp;
bool bd_read_only; /* read-only policy */
u8 bd_partno;
bool bd_write_holder;
bool bd_has_submit_bio;
dev_t bd_dev;
atomic_t bd_openers;
spinlock_t bd_size_lock; /* for bd_inode->i_size updates */
struct inode * bd_inode; /* will die */
struct super_block * bd_super;
void * bd_claiming;
struct device bd_device;
void * bd_holder;
int bd_holders;
bool bd_write_holder;
struct kobject *bd_holder_dir;
u8 bd_partno;
spinlock_t bd_size_lock; /* for bd_inode->i_size updates */
struct gendisk * bd_disk;
struct request_queue * bd_queue;
/* The counter of freeze processes */
int bd_fsfreeze_count;
int bd_holders;
struct kobject *bd_holder_dir;
/* Mutex for freeze */
struct mutex bd_fsfreeze_mutex;
struct super_block *bd_fsfreeze_sb;
@ -68,6 +68,11 @@ struct block_device {
#ifdef CONFIG_FAIL_MAKE_REQUEST
bool bd_make_it_fail;
#endif
/*
* keep this out-of-line as it's both big and not needed in the fast
* path
*/
struct device bd_device;
} __randomize_layout;
#define bdev_whole(_bdev) \

12
include/linux/blkdev.h
View File

@ -44,12 +44,6 @@ extern const struct device_type disk_type;
extern struct device_type part_type;
extern struct class block_class;
/* Must be consistent with blk_mq_poll_stats_bkt() */
#define BLK_MQ_POLL_STATS_BKTS 16
/* Doing classic polling */
#define BLK_MQ_POLL_CLASSIC -1
/*
* Maximum number of blkcg policies allowed to be registered concurrently.
* Defined here to simplify include dependency.
@ -468,10 +462,6 @@ struct request_queue {
#endif
unsigned int rq_timeout;
int poll_nsec;
struct blk_stat_callback *poll_cb;
struct blk_rq_stat *poll_stat;
struct timer_list timeout;
struct work_struct timeout_work;
@ -870,8 +860,6 @@ blk_status_t errno_to_blk_status(int errno);
/* only poll the hardware once, don't continue until a completion was found */
#define BLK_POLL_ONESHOT (1 << 0)
/* do not sleep to wait for the expected completion time */
#define BLK_POLL_NOSLEEP (1 << 1)
int bio_poll(struct bio *bio, struct io_comp_batch *iob, unsigned int flags);
int iocb_bio_iopoll(struct kiocb *kiocb, struct io_comp_batch *iob,
unsigned int flags);

22
include/linux/fault-inject.h
View File

@ -6,6 +6,7 @@
#include <linux/types.h>
#include <linux/debugfs.h>
#include <linux/configfs.h>
#include <linux/ratelimit.h>
#include <linux/atomic.h>
@ -65,6 +66,27 @@ static inline struct dentry *fault_create_debugfs_attr(const char *name,
#endif /* CONFIG_FAULT_INJECTION_DEBUG_FS */
#ifdef CONFIG_FAULT_INJECTION_CONFIGFS
struct fault_config {
struct fault_attr attr;
struct config_group group;
};
void fault_config_init(struct fault_config *config, const char *name);
#else /* CONFIG_FAULT_INJECTION_CONFIGFS */
struct fault_config {
};
static inline void fault_config_init(struct fault_config *config,
const char *name)
{
}
#endif /* CONFIG_FAULT_INJECTION_CONFIGFS */
#endif /* CONFIG_FAULT_INJECTION */
struct kmem_cache;

2
include/linux/genl_magic_func.h
View File

@ -209,7 +209,7 @@ static int s_name ## _from_attrs_for_change(struct s_name *s, \
* Magic: define op number to op name mapping {{{1
* {{{2
*/
const char *CONCAT_(GENL_MAGIC_FAMILY, _genl_cmd_to_str)(__u8 cmd)
static const char *CONCAT_(GENL_MAGIC_FAMILY, _genl_cmd_to_str)(__u8 cmd)
{
switch (cmd) {
#undef GENL_op

2
include/linux/sed-opal.h
View File

@ -45,6 +45,8 @@ static inline bool is_sed_ioctl(unsigned int cmd)
case IOC_OPAL_WRITE_SHADOW_MBR:
case IOC_OPAL_GENERIC_TABLE_RW:
case IOC_OPAL_GET_STATUS:
case IOC_OPAL_GET_LR_STATUS:
case IOC_OPAL_GET_GEOMETRY:
return true;
}
return false;

24
include/uapi/linux/sed-opal.h
View File

@ -78,6 +78,16 @@ struct opal_user_lr_setup {
struct opal_session_info session;
};
struct opal_lr_status {
struct opal_session_info session;
__u64 range_start;
__u64 range_length;
__u32 RLE; /* Read Lock enabled */
__u32 WLE; /* Write Lock Enabled */
__u32 l_state;
__u8 align[4];
};
struct opal_lock_unlock {
struct opal_session_info session;
__u32 l_state;
@ -151,6 +161,18 @@ struct opal_status {
__u32 reserved;
};
/*
* Geometry Reporting per TCG Storage OPAL SSC
* section 3.1.1.4
*/
struct opal_geometry {
__u8 align;
__u32 logical_block_size;
__u64 alignment_granularity;
__u64 lowest_aligned_lba;
__u8 __align[3];
};
#define IOC_OPAL_SAVE _IOW('p', 220, struct opal_lock_unlock)
#define IOC_OPAL_LOCK_UNLOCK _IOW('p', 221, struct opal_lock_unlock)
#define IOC_OPAL_TAKE_OWNERSHIP _IOW('p', 222, struct opal_key)
@ -168,5 +190,7 @@ struct opal_status {
#define IOC_OPAL_WRITE_SHADOW_MBR _IOW('p', 234, struct opal_shadow_mbr)
#define IOC_OPAL_GENERIC_TABLE_RW _IOW('p', 235, struct opal_read_write_table)
#define IOC_OPAL_GET_STATUS _IOR('p', 236, struct opal_status)
#define IOC_OPAL_GET_LR_STATUS _IOW('p', 237, struct opal_lr_status)
#define IOC_OPAL_GET_GEOMETRY _IOR('p', 238, struct opal_geometry)
#endif /* _UAPI_SED_OPAL_H */

43
include/uapi/linux/ublk_cmd.h
View File

@ -8,6 +8,9 @@
/*
* Admin commands, issued by ublk server, and handled by ublk driver.
*
* Legacy command definition, don't use in new application, and don't
* add new such definition any more
*/
#define UBLK_CMD_GET_QUEUE_AFFINITY 0x01
#define UBLK_CMD_GET_DEV_INFO 0x02
@ -21,6 +24,30 @@
#define UBLK_CMD_END_USER_RECOVERY 0x11
#define UBLK_CMD_GET_DEV_INFO2 0x12
/* Any new ctrl command should encode by __IO*() */
#define UBLK_U_CMD_GET_QUEUE_AFFINITY \
_IOR('u', UBLK_CMD_GET_QUEUE_AFFINITY, struct ublksrv_ctrl_cmd)
#define UBLK_U_CMD_GET_DEV_INFO \
_IOR('u', UBLK_CMD_GET_DEV_INFO, struct ublksrv_ctrl_cmd)
#define UBLK_U_CMD_ADD_DEV \
_IOWR('u', UBLK_CMD_ADD_DEV, struct ublksrv_ctrl_cmd)
#define UBLK_U_CMD_DEL_DEV \
_IOWR('u', UBLK_CMD_DEL_DEV, struct ublksrv_ctrl_cmd)
#define UBLK_U_CMD_START_DEV \
_IOWR('u', UBLK_CMD_START_DEV, struct ublksrv_ctrl_cmd)
#define UBLK_U_CMD_STOP_DEV \
_IOWR('u', UBLK_CMD_STOP_DEV, struct ublksrv_ctrl_cmd)
#define UBLK_U_CMD_SET_PARAMS \
_IOWR('u', UBLK_CMD_SET_PARAMS, struct ublksrv_ctrl_cmd)
#define UBLK_U_CMD_GET_PARAMS \
_IOR('u', UBLK_CMD_GET_PARAMS, struct ublksrv_ctrl_cmd)
#define UBLK_U_CMD_START_USER_RECOVERY \
_IOWR('u', UBLK_CMD_START_USER_RECOVERY, struct ublksrv_ctrl_cmd)
#define UBLK_U_CMD_END_USER_RECOVERY \
_IOWR('u', UBLK_CMD_END_USER_RECOVERY, struct ublksrv_ctrl_cmd)
#define UBLK_U_CMD_GET_DEV_INFO2 \
_IOR('u', UBLK_CMD_GET_DEV_INFO2, struct ublksrv_ctrl_cmd)
/*
* IO commands, issued by ublk server, and handled by ublk driver.
*
@ -41,10 +68,23 @@
* It is only used if ublksrv set UBLK_F_NEED_GET_DATA flag
* while starting a ublk device.
*/
/*
* Legacy IO command definition, don't use in new application, and don't
* add new such definition any more
*/
#define UBLK_IO_FETCH_REQ 0x20
#define UBLK_IO_COMMIT_AND_FETCH_REQ 0x21
#define UBLK_IO_NEED_GET_DATA 0x22
/* Any new IO command should encode by __IOWR() */
#define UBLK_U_IO_FETCH_REQ \
_IOWR('u', UBLK_IO_FETCH_REQ, struct ublksrv_io_cmd)
#define UBLK_U_IO_COMMIT_AND_FETCH_REQ \
_IOWR('u', UBLK_IO_COMMIT_AND_FETCH_REQ, struct ublksrv_io_cmd)
#define UBLK_U_IO_NEED_GET_DATA \
_IOWR('u', UBLK_IO_NEED_GET_DATA, struct ublksrv_io_cmd)
/* only ABORT means that no re-fetch */
#define UBLK_IO_RES_OK 0
#define UBLK_IO_RES_NEED_GET_DATA 1
@ -102,6 +142,9 @@
*/
#define UBLK_F_UNPRIVILEGED_DEV (1UL << 5)
/* use ioctl encoding for uring command */
#define UBLK_F_CMD_IOCTL_ENCODE (1UL << 6)
/* device state */
#define UBLK_S_DEV_DEAD 0
#define UBLK_S_DEV_LIVE 1

2
io_uring/rw.c
View File

@ -1001,7 +1001,7 @@ void io_rw_fail(struct io_kiocb *req)
int io_do_iopoll(struct io_ring_ctx *ctx, bool force_nonspin)
{
struct io_wq_work_node *pos, *start, *prev;
unsigned int poll_flags = BLK_POLL_NOSLEEP;
unsigned int poll_flags = 0;
DEFINE_IO_COMP_BATCH(iob);
int nr_events = 0;

14
lib/Kconfig.debug
View File

@ -1958,9 +1958,21 @@ config FAIL_SUNRPC
Provide fault-injection capability for SunRPC and
its consumers.
config FAULT_INJECTION_CONFIGFS
bool "Configfs interface for fault-injection capabilities"
depends on FAULT_INJECTION
select CONFIGFS_FS
help
This option allows configfs-based drivers to dynamically configure
fault-injection via configfs. Each parameter for driver-specific
fault-injection can be made visible as a configfs attribute in a
configfs group.
config FAULT_INJECTION_STACKTRACE_FILTER
bool "stacktrace filter for fault-injection capabilities"
depends on FAULT_INJECTION_DEBUG_FS && STACKTRACE_SUPPORT
depends on FAULT_INJECTION
depends on (FAULT_INJECTION_DEBUG_FS || FAULT_INJECTION_CONFIGFS) && STACKTRACE_SUPPORT
select STACKTRACE
depends on FRAME_POINTER || MIPS || PPC || S390 || MICROBLAZE || ARM || ARC || X86
help

191
lib/fault-inject.c
View File

@ -244,3 +244,194 @@ struct dentry *fault_create_debugfs_attr(const char *name,
EXPORT_SYMBOL_GPL(fault_create_debugfs_attr);
#endif /* CONFIG_FAULT_INJECTION_DEBUG_FS */
#ifdef CONFIG_FAULT_INJECTION_CONFIGFS
/* These configfs attribute utilities are copied from drivers/block/null_blk/main.c */
static ssize_t fault_uint_attr_show(unsigned int val, char *page)
{
return snprintf(page, PAGE_SIZE, "%u\n", val);
}
static ssize_t fault_ulong_attr_show(unsigned long val, char *page)
{
return snprintf(page, PAGE_SIZE, "%lu\n", val);
}
static ssize_t fault_bool_attr_show(bool val, char *page)
{
return snprintf(page, PAGE_SIZE, "%u\n", val);
}
static ssize_t fault_atomic_t_attr_show(atomic_t val, char *page)
{
return snprintf(page, PAGE_SIZE, "%d\n", atomic_read(&val));
}
static ssize_t fault_uint_attr_store(unsigned int *val, const char *page, size_t count)
{
unsigned int tmp;
int result;
result = kstrtouint(page, 0, &tmp);
if (result < 0)
return result;
*val = tmp;
return count;
}
static ssize_t fault_ulong_attr_store(unsigned long *val, const char *page, size_t count)
{
int result;
unsigned long tmp;
result = kstrtoul(page, 0, &tmp);
if (result < 0)
return result;
*val = tmp;
return count;
}
static ssize_t fault_bool_attr_store(bool *val, const char *page, size_t count)
{
bool tmp;
int result;
result = kstrtobool(page, &tmp);
if (result < 0)
return result;
*val = tmp;
return count;
}
static ssize_t fault_atomic_t_attr_store(atomic_t *val, const char *page, size_t count)
{
int tmp;
int result;
result = kstrtoint(page, 0, &tmp);
if (result < 0)
return result;
atomic_set(val, tmp);
return count;
}
#define CONFIGFS_ATTR_NAMED(_pfx, _name, _attr_name) \
static struct configfs_attribute _pfx##attr_##_name = { \
.ca_name = _attr_name, \
.ca_mode = 0644, \
.ca_owner = THIS_MODULE, \
.show = _pfx##_name##_show, \
.store = _pfx##_name##_store, \
}
static struct fault_config *to_fault_config(struct config_item *item)
{
return container_of(to_config_group(item), struct fault_config, group);
}
#define FAULT_CONFIGFS_ATTR_NAMED(NAME, ATTR_NAME, MEMBER, TYPE) \
static ssize_t fault_##NAME##_show(struct config_item *item, char *page) \
{ \
return fault_##TYPE##_attr_show(to_fault_config(item)->attr.MEMBER, page); \
} \
static ssize_t fault_##NAME##_store(struct config_item *item, const char *page, size_t count) \
{ \
struct fault_config *config = to_fault_config(item); \
return fault_##TYPE##_attr_store(&config->attr.MEMBER, page, count); \
} \
CONFIGFS_ATTR_NAMED(fault_, NAME, ATTR_NAME)
#define FAULT_CONFIGFS_ATTR(NAME, TYPE) \
FAULT_CONFIGFS_ATTR_NAMED(NAME, __stringify(NAME), NAME, TYPE)
FAULT_CONFIGFS_ATTR(probability, ulong);
FAULT_CONFIGFS_ATTR(interval, ulong);
FAULT_CONFIGFS_ATTR(times, atomic_t);
FAULT_CONFIGFS_ATTR(space, atomic_t);
FAULT_CONFIGFS_ATTR(verbose, ulong);
FAULT_CONFIGFS_ATTR_NAMED(ratelimit_interval, "verbose_ratelimit_interval_ms",
ratelimit_state.interval, uint);
FAULT_CONFIGFS_ATTR_NAMED(ratelimit_burst, "verbose_ratelimit_burst",
ratelimit_state.burst, uint);
FAULT_CONFIGFS_ATTR_NAMED(task_filter, "task-filter", task_filter, bool);
#ifdef CONFIG_FAULT_INJECTION_STACKTRACE_FILTER
static ssize_t fault_stacktrace_depth_show(struct config_item *item, char *page)
{
return fault_ulong_attr_show(to_fault_config(item)->attr.stacktrace_depth, page);
}
static ssize_t fault_stacktrace_depth_store(struct config_item *item, const char *page,
size_t count)
{
int result;
unsigned long tmp;
result = kstrtoul(page, 0, &tmp);
if (result < 0)
return result;
to_fault_config(item)->attr.stacktrace_depth =
min_t(unsigned long, tmp, MAX_STACK_TRACE_DEPTH);
return count;
}
CONFIGFS_ATTR_NAMED(fault_, stacktrace_depth, "stacktrace-depth");
static ssize_t fault_xul_attr_show(unsigned long val, char *page)
{
return snprintf(page, PAGE_SIZE,
sizeof(val) == sizeof(u32) ? "0x%08lx\n" : "0x%016lx\n", val);
}
static ssize_t fault_xul_attr_store(unsigned long *val, const char *page, size_t count)
{
return fault_ulong_attr_store(val, page, count);
}
FAULT_CONFIGFS_ATTR_NAMED(require_start, "require-start", require_start, xul);
FAULT_CONFIGFS_ATTR_NAMED(require_end, "require-end", require_end, xul);
FAULT_CONFIGFS_ATTR_NAMED(reject_start, "reject-start", reject_start, xul);
FAULT_CONFIGFS_ATTR_NAMED(reject_end, "reject-end", reject_end, xul);
#endif /* CONFIG_FAULT_INJECTION_STACKTRACE_FILTER */
static struct configfs_attribute *fault_config_attrs[] = {
&fault_attr_probability,
&fault_attr_interval,
&fault_attr_times,
&fault_attr_space,
&fault_attr_verbose,
&fault_attr_ratelimit_interval,
&fault_attr_ratelimit_burst,
&fault_attr_task_filter,
#ifdef CONFIG_FAULT_INJECTION_STACKTRACE_FILTER
&fault_attr_stacktrace_depth,
&fault_attr_require_start,
&fault_attr_require_end,
&fault_attr_reject_start,
&fault_attr_reject_end,
#endif /* CONFIG_FAULT_INJECTION_STACKTRACE_FILTER */
NULL,
};
static const struct config_item_type fault_config_type = {
.ct_attrs = fault_config_attrs,
.ct_owner = THIS_MODULE,
};
void fault_config_init(struct fault_config *config, const char *name)
{
config_group_init_type_name(&config->group, name, &fault_config_type);
}
EXPORT_SYMBOL_GPL(fault_config_init);
#endif /* CONFIG_FAULT_INJECTION_CONFIGFS */