Bart Van Assche 1c23484c35 dm mpath: do not lock up a CPU with requeuing activity ...

When using the block layer in single queue mode, get_request()
returns ERR_PTR(-EAGAIN) if the queue is dying and the REQ_NOWAIT
flag has been passed to get_request(). Avoid that the kernel
reports soft lockup complaints in this case due to continuous
requeuing activity.

Fixes: 7083abbbf ("dm mpath: avoid that path removal can trigger an infinite loop")
Cc: stable@vger.kernel.org
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Tested-by: Laurence Oberman <loberman@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>

2017-08-28 09:58:27 -04:00

..

bcache

Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2017-07-03 13:08:04 -07:00

persistent-data

dm space map disk: fix some book keeping in the disk space map

2017-05-15 15:09:50 -04:00

bitmap.c

md/bitmap: don't read page from device with Bitmap_sync

2017-07-10 10:30:41 -07:00

bitmap.h

md: move bitmap_destroy to the beginning of __md_stop

2017-03-16 16:55:58 -07:00

dm-bio-prison-v1.c

dm bio prison: use rb_entry() rather than container_of()

2017-06-19 11:03:50 -04:00

dm-bio-prison-v1.h

block: switch bios to blk_status_t

2017-06-09 09:27:32 -06:00

dm-bio-prison-v2.c

dm bio prison: use rb_entry() rather than container_of()

2017-06-19 11:03:50 -04:00

dm-bio-prison-v2.h

dm bio prison v2: new interface for the bio prison

2017-03-07 11:30:16 -05:00

dm-bio-record.h

dm: Refactor for new bio cloning/splitting

2013-11-23 22:33:55 -08:00

dm-bufio.c

dm bufio: fix error code in dm_bufio_write_dirty_buffers()

2017-07-25 10:11:15 -04:00

dm-bufio.h

dm bufio: add sector start offset to dm-bufio interface

2017-03-07 13:28:33 -05:00

dm-builtin.c

dm: move request-based code out to dm-rq.[hc]

2016-06-10 15:15:44 -04:00

dm-cache-background-tracker.c

dm cache: handle kmalloc failure allocating background_tracker struct

2017-05-17 09:44:53 -04:00

dm-cache-background-tracker.h

dm cache: significant rework to leverage dm-bio-prison-v2

2017-03-07 13:28:31 -05:00

dm-cache-block-types.h

linux: drop __bitwise__ everywhere

2016-12-16 00:13:41 +02:00

dm-cache-metadata.c

dm cache metadata: fail operations if fail_io mode has been established

2017-05-05 14:40:13 -04:00

dm-cache-metadata.h

dm cache: significant rework to leverage dm-bio-prison-v2

2017-03-07 13:28:31 -05:00

dm-cache-policy-internal.h

dm cache: significant rework to leverage dm-bio-prison-v2

2017-03-07 13:28:31 -05:00

dm-cache-policy-smq.c

dm cache policy smq: don't do any writebacks unless IDLE

2017-05-14 21:54:33 -04:00

dm-cache-policy.c

dm cache: add policy name to status output

2014-01-16 13:44:11 -05:00

dm-cache-policy.h

dm cache: significant rework to leverage dm-bio-prison-v2

2017-03-07 13:28:31 -05:00

dm-cache-target.c

block: switch bios to blk_status_t

2017-06-09 09:27:32 -06:00

dm-core.h

dm: add basic support for using the select or poll function

2017-06-19 11:03:49 -04:00

dm-crypt.c

dm crypt: add big-endian variant of plain64 IV

2017-06-19 11:03:50 -04:00

dm-delay.c

dm: mark targets that pass integrity data

2017-04-24 12:04:32 -04:00

dm-era-target.c

dm block manager: remove an unused argument from dm_block_manager_create()

2017-04-27 17:08:41 -04:00

dm-exception-store.c

- Revert a dm-multipath change that caused a regression for unprivledged

2015-11-04 21:19:53 -08:00

dm-exception-store.h

dm snapshot: fix hung bios when copy error occurs

2016-01-08 20:03:05 -05:00

dm-flakey.c

dm flakey: add support for zoned block devices

2017-06-19 11:03:51 -04:00

dm-integrity.c

dm integrity: test for corrupted disk format during table load

2017-07-25 10:11:14 -04:00

dm-io.c

Merge branch 'for-4.13/block' of git://git.kernel.dk/linux-block

2017-07-03 10:34:51 -07:00

dm-ioctl.c

dm ioctl: report event number in DM_LIST_DEVICES

2017-06-19 11:03:50 -04:00

dm-kcopyd.c

dm kcopyd: add sequential write feature

2017-06-19 11:03:51 -04:00

dm-linear.c

libnvdimm for 4.13

2017-07-07 09:44:06 -07:00

dm-log-userspace-base.c

dm: drop NULL test before kmem_cache_destroy() and mempool_destroy()

2015-10-31 19:06:00 -04:00

dm-log-userspace-transfer.c

dm log userspace transfer: match wait_for_completion_timeout return type

2015-04-15 12:10:20 -04:00

dm-log-userspace-transfer.h

…

dm-log-writes.c

block: switch bios to blk_status_t

2017-06-09 09:27:32 -06:00

dm-log.c

block,fs: use REQ_* flags directly

2016-11-01 09:43:26 -06:00

dm-mpath.c

dm mpath: do not lock up a CPU with requeuing activity

2017-08-28 09:58:27 -04:00

dm-mpath.h

…

dm-path-selector.c

md: Add module.h to all files using it implicitly

2011-10-31 19:31:18 -04:00

dm-path-selector.h

dm path selector: remove 'repeat_count' return from .select_path hook

2016-02-22 22:34:42 -05:00

dm-queue-length.c

dm path selector: remove 'repeat_count' return from .select_path hook

2016-02-22 22:34:42 -05:00

dm-raid1.c

Merge branch 'for-4.13/block' of git://git.kernel.dk/linux-block

2017-07-03 10:34:51 -07:00

dm-raid.c

dm raid: bump target version

2017-07-25 14:54:20 -04:00

dm-region-hash.c

block: rename bio bi_rw to bi_opf

2016-08-07 14:41:02 -06:00

dm-round-robin.c

dm round robin: revert "use percpu 'repeat_count' and 'current_path'"

2017-02-17 00:54:09 -05:00

dm-rq.c

blk-mq: use the introduced blk_mq_unquiesce_queue()

2017-06-18 14:20:04 -06:00

dm-rq.h

block: introduce new block status code type

2017-06-09 09:27:32 -06:00

dm-service-time.c

dm path selector: remove 'repeat_count' return from .select_path hook

2016-02-22 22:34:42 -05:00

dm-snap-persistent.c

dm: make flush bios explicitly sync

2017-05-31 10:50:23 -04:00

dm-snap-transient.c

dm snapshot: fix hung bios when copy error occurs

2016-01-08 20:03:05 -05:00

dm-snap.c

block: switch bios to blk_status_t

2017-06-09 09:27:32 -06:00

dm-stats.c

mm: introduce kv[mz]alloc helpers

2017-05-08 17:15:12 -07:00

dm-stats.h

dm stats: support precise timestamps

2015-06-17 12:40:40 -04:00

dm-stripe.c

libnvdimm for 4.13

2017-07-07 09:44:06 -07:00

dm-switch.c

dm switch: simplify conditional in alloc_region_table()

2015-10-31 19:06:06 -04:00

dm-sysfs.c

dm: move request-based code out to dm-rq.[hc]

2016-06-10 15:15:44 -04:00

dm-table.c

dm, dax: Make sure dm_dax_flush() is called if device supports it

2017-07-26 15:55:44 -04:00

dm-target.c

dm: don't return errnos from ->map

2017-06-09 09:27:32 -06:00

dm-thin-metadata.c

dm thin metadata: call precommit before saving the roots

2017-05-15 15:09:49 -04:00

dm-thin-metadata.h

dm thin: fix a race condition between discarding and provisioning a block

2016-07-20 12:43:35 -04:00

dm-thin.c

Merge branch 'for-4.13/block' of git://git.kernel.dk/linux-block

2017-07-03 10:34:51 -07:00

dm-uevent.c

md: Add in export.h for files using EXPORT_SYMBOL

2011-10-31 19:31:19 -04:00

dm-uevent.h

…

dm-verity-fec.c

dm verity fec: fix GFP flags used with mempool_alloc()

2017-07-26 15:55:44 -04:00

dm-verity-fec.h

dm verity fec: limit error correction recursion

2017-03-16 09:37:31 -04:00

dm-verity-target.c

Linux 4.12-rc5

2017-06-12 08:30:13 -06:00

dm-verity.h

dm verity: switch to using asynchronous hash crypto API

2017-04-24 15:37:04 -04:00

dm-zero.c

dm: don't return errnos from ->map

2017-06-09 09:27:32 -06:00

dm-zoned-metadata.c

dm zoned: use GFP_NOIO in I/O path

2017-07-26 15:55:43 -04:00

dm-zoned-reclaim.c

dm zoned: use GFP_NOIO in I/O path

2017-07-26 15:55:43 -04:00

dm-zoned-target.c

dm zoned: use GFP_NOIO in I/O path

2017-07-26 15:55:43 -04:00

dm-zoned.h

dm zoned: drive-managed zoned block device target

2017-06-19 11:05:20 -04:00

dm.c

dm: fix printk() rate limiting code

2017-08-28 09:58:27 -04:00

dm.h

dm: introduce enum dm_queue_mode to cleanup related code

2017-04-27 17:08:44 -04:00

faulty.c

md: fix deadlock between mddev_suspend() and md_write_start()

2017-06-13 10:18:01 -07:00

Kconfig

dm zoned: drive-managed zoned block device target

2017-06-19 11:05:20 -04:00

linear.c

md: fix deadlock between mddev_suspend() and md_write_start()

2017-06-13 10:18:01 -07:00

linear.h

md linear: fix a race between linear_add() and linear_congested()

2017-02-13 09:17:50 -08:00

Makefile

dm zoned: drive-managed zoned block device target

2017-06-19 11:05:20 -04:00

md-cluster.c

md-cluster: fix potential lock issue in add_new_disk

2017-05-21 20:37:09 -07:00

md-cluster.h

md-cluster: add the support for resize

2017-03-16 16:55:50 -07:00

md.c

MD: not clear ->safemode for external metadata array

2017-08-11 20:42:06 -07:00

md.h

md: raid1-10: move raid1/raid10 common code into raid1-10.c

2017-07-21 12:47:20 -07:00

multipath.c

Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md

2017-07-08 12:50:18 -07:00

multipath.h

md/multipath: typedef removal: multipath_conf_t -> struct mpconf

2011-10-11 16:48:57 +11:00

raid0.c

md: fix deadlock between mddev_suspend() and md_write_start()

2017-06-13 10:18:01 -07:00

raid0.h

block: kill merge_bvec_fn() completely

2015-08-13 12:31:57 -06:00

raid1-10.c

md: raid1-10: move raid1/raid10 common code into raid1-10.c

2017-07-21 12:47:20 -07:00

raid1.c

md: simplify code with bio_io_error

2017-07-21 13:16:52 -07:00

raid1.h

md/raid1: Use a new variable to count flighting sync requests

2017-04-27 14:01:16 -07:00

raid5-cache.c

md/r5cache: fix io_unit handling in r5l_log_endio()

2017-08-08 07:42:37 -07:00

raid5-log.h

md/r5cache: gracefully handle journal device errors for writeback mode

2017-05-11 22:11:11 -07:00

raid5-ppl.c

raid5-ppl: use BIOSET_NEED_BVECS when creating bioset

2017-07-12 09:26:37 -07:00

raid5.c

md/raid5: add thread_group worker async_tx_issue_pending_all

2017-07-24 07:49:15 -07:00

raid5.h

- A major update for DM cache that reduces the latency for deciding

2017-05-03 10:31:20 -07:00

raid10.c

md: simplify code with bio_io_error

2017-07-21 13:16:52 -07:00

raid10.h

md/raid10: simplify the splitting of requests.

2017-04-11 10:13:02 -07:00