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block-5.14-2021-07-24

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Merge tag 'block-5.14-2021-07-24' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:

 - NVMe pull request (Christoph):
    - tracing fix (Keith Busch)
    - fix multipath head refcounting (Hannes Reinecke)
    - Write Zeroes vs PI fix (me)
    - drop a bogus WARN_ON (Zhihao Cheng)

 - Increase max blk-cgroup policy size, now that mq-deadline
   uses it too (Oleksandr)

* tag 'block-5.14-2021-07-24' of git://git.kernel.dk/linux-block:
  nvme: set the PRACT bit when using Write Zeroes with T10 PI
  nvme: fix nvme_setup_command metadata trace event
  nvme: fix refcounting imbalance when all paths are down
  nvme-pci: don't WARN_ON in nvme_reset_work if ctrl.state is not RESETTING
  block: increase BLKCG_MAX_POLS
This commit is contained in:
Linus Torvalds 2021-07-24 12:57:06 -07:00
commit 4d4a60cede
6 changed files with 32 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

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

@ -900,7 +900,10 @@ static inline blk_status_t nvme_setup_write_zeroes(struct nvme_ns *ns,
cpu_to_le64(nvme_sect_to_lba(ns, blk_rq_pos(req)));
cmnd->write_zeroes.length =
cpu_to_le16((blk_rq_bytes(req) >> ns->lba_shift) - 1);
cmnd->write_zeroes.control = 0;
if (nvme_ns_has_pi(ns))
cmnd->write_zeroes.control = cpu_to_le16(NVME_RW_PRINFO_PRACT);
else
cmnd->write_zeroes.control = 0;
return BLK_STS_OK;
}
@ -3807,6 +3810,8 @@ static void nvme_alloc_ns(struct nvme_ctrl *ctrl, unsigned nsid,
static void nvme_ns_remove(struct nvme_ns *ns)
{
bool last_path = false;
if (test_and_set_bit(NVME_NS_REMOVING, &ns->flags))
return;
@ -3815,8 +3820,6 @@ static void nvme_ns_remove(struct nvme_ns *ns)
mutex_lock(&ns->ctrl->subsys->lock);
list_del_rcu(&ns->siblings);
if (list_empty(&ns->head->list))
list_del_init(&ns->head->entry);
mutex_unlock(&ns->ctrl->subsys->lock);
synchronize_rcu(); /* guarantee not available in head->list */
@ -3836,7 +3839,15 @@ static void nvme_ns_remove(struct nvme_ns *ns)
list_del_init(&ns->list);
up_write(&ns->ctrl->namespaces_rwsem);
nvme_mpath_check_last_path(ns);
/* Synchronize with nvme_init_ns_head() */
mutex_lock(&ns->head->subsys->lock);
if (list_empty(&ns->head->list)) {
list_del_init(&ns->head->entry);
last_path = true;
}
mutex_unlock(&ns->head->subsys->lock);
if (last_path)
nvme_mpath_shutdown_disk(ns->head);
nvme_put_ns(ns);
}

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

@ -760,14 +760,21 @@ void nvme_mpath_add_disk(struct nvme_ns *ns, struct nvme_id_ns *id)
#endif
}
void nvme_mpath_remove_disk(struct nvme_ns_head *head)
void nvme_mpath_shutdown_disk(struct nvme_ns_head *head)
{
if (!head->disk)
return;
kblockd_schedule_work(&head->requeue_work);
if (head->disk->flags & GENHD_FL_UP) {
nvme_cdev_del(&head->cdev, &head->cdev_device);
del_gendisk(head->disk);
}
}
void nvme_mpath_remove_disk(struct nvme_ns_head *head)
{
if (!head->disk)
return;
blk_set_queue_dying(head->disk->queue);
/* make sure all pending bios are cleaned up */
kblockd_schedule_work(&head->requeue_work);

11
drivers/nvme/host/nvme.h
View File

@ -716,14 +716,7 @@ void nvme_mpath_uninit(struct nvme_ctrl *ctrl);
void nvme_mpath_stop(struct nvme_ctrl *ctrl);
bool nvme_mpath_clear_current_path(struct nvme_ns *ns);
void nvme_mpath_clear_ctrl_paths(struct nvme_ctrl *ctrl);
static inline void nvme_mpath_check_last_path(struct nvme_ns *ns)
{
struct nvme_ns_head *head = ns->head;
if (head->disk && list_empty(&head->list))
kblockd_schedule_work(&head->requeue_work);
}
void nvme_mpath_shutdown_disk(struct nvme_ns_head *head);
static inline void nvme_trace_bio_complete(struct request *req)
{
@ -772,7 +765,7 @@ static inline bool nvme_mpath_clear_current_path(struct nvme_ns *ns)
static inline void nvme_mpath_clear_ctrl_paths(struct nvme_ctrl *ctrl)
{
}
static inline void nvme_mpath_check_last_path(struct nvme_ns *ns)
static inline void nvme_mpath_shutdown_disk(struct nvme_ns_head *head)
{
}
static inline void nvme_trace_bio_complete(struct request *req)

4
drivers/nvme/host/pci.c
View File

@ -2631,7 +2631,9 @@ static void nvme_reset_work(struct work_struct *work)
bool was_suspend = !!(dev->ctrl.ctrl_config & NVME_CC_SHN_NORMAL);
int result;
if (WARN_ON(dev->ctrl.state != NVME_CTRL_RESETTING)) {
if (dev->ctrl.state != NVME_CTRL_RESETTING) {
dev_warn(dev->ctrl.device, "ctrl state %d is not RESETTING\n",
dev->ctrl.state);
result = -ENODEV;
goto out;
}

6
drivers/nvme/host/trace.h
View File

@ -56,7 +56,7 @@ TRACE_EVENT(nvme_setup_cmd,
__field(u8, fctype)
__field(u16, cid)
__field(u32, nsid)
__field(u64, metadata)
__field(bool, metadata)
__array(u8, cdw10, 24)
),
TP_fast_assign(
@ -66,13 +66,13 @@ TRACE_EVENT(nvme_setup_cmd,
__entry->flags = cmd->common.flags;
__entry->cid = cmd->common.command_id;
__entry->nsid = le32_to_cpu(cmd->common.nsid);
__entry->metadata = le64_to_cpu(cmd->common.metadata);
__entry->metadata = !!blk_integrity_rq(req);
__entry->fctype = cmd->fabrics.fctype;
__assign_disk_name(__entry->disk, req->rq_disk);
memcpy(__entry->cdw10, &cmd->common.cdw10,
sizeof(__entry->cdw10));
),
TP_printk("nvme%d: %sqid=%d, cmdid=%u, nsid=%u, flags=0x%x, meta=0x%llx, cmd=(%s %s)",
TP_printk("nvme%d: %sqid=%d, cmdid=%u, nsid=%u, flags=0x%x, meta=0x%x, cmd=(%s %s)",
__entry->ctrl_id, __print_disk_name(__entry->disk),
__entry->qid, __entry->cid, __entry->nsid,
__entry->flags, __entry->metadata,

2
include/linux/blkdev.h
View File

@ -57,7 +57,7 @@ struct blk_keyslot_manager;
* Maximum number of blkcg policies allowed to be registered concurrently.
* Defined here to simplify include dependency.
*/
#define BLKCG_MAX_POLS 5
#define BLKCG_MAX_POLS 6
typedef void (rq_end_io_fn)(struct request *, blk_status_t);