Jens Axboe a8c32a5c98 dm: fix deadlock with request based dm and queue request_fn recursion ...

Request based dm attempts to re-run the request queue off the
request completion path. If used with a driver that potentially does
end_io from its request_fn, we could deadlock trying to recurse
back into request dispatch. Fix this by punting the request queue
run to kblockd.

Tested to fix a quickly reproducible deadlock in such a scenario.

Cc: stable@kernel.org
Acked-by: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

2012-11-23 14:32:54 +01:00

..

persistent-data

dm persistent data: convert to use le32_add_cpu

2012-10-12 16:59:47 +01:00

bitmap.c

md/bitmap:Don't use IS_ERR to judge alloc_page().

2012-10-11 13:45:36 +11:00

bitmap.h

md/bitmap: record the space available for the bitmap in the superblock.

2012-05-22 13:55:34 +10:00

dm-bio-prison.c

dm thin: move bio_prison code to separate module

2012-10-12 21:02:13 +01:00

dm-bio-prison.h

dm thin: move bio_prison code to separate module

2012-10-12 21:02:13 +01:00

dm-bio-record.h

…

dm-bufio.c

dm: use ACCESS_ONCE for sysfs values

2012-10-12 16:59:46 +01:00

dm-bufio.h

dm bufio: prefetch

2012-03-28 18:41:29 +01:00

dm-crypt.c

block: Add bio_clone_bioset(), bio_clone_kmalloc()

2012-09-09 10:35:39 +02:00

dm-delay.c

dm thin: commit before gathering status

2012-07-27 15:08:16 +01:00

dm-exception-store.c

dm: replace simple_strtoul

2012-07-27 15:07:59 +01:00

dm-exception-store.h

dm snapshot: test chunk size against both origin and snapshot

2010-08-12 04:13:51 +01:00

dm-flakey.c

dm thin: commit before gathering status

2012-07-27 15:08:16 +01:00

dm-io.c

block: Generalized bio pool freeing

2012-09-09 10:35:38 +02:00

dm-ioctl.c

dm thin: commit before gathering status

2012-07-27 15:08:16 +01:00

dm-kcopyd.c

dm kcopyd: add dm_kcopyd_zero to zero an area

2011-10-31 20:18:58 +00:00

dm-linear.c

dm thin: commit before gathering status

2012-07-27 15:08:16 +01:00

dm-log-userspace-base.c

Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux

2011-11-06 19:44:47 -08:00

dm-log-userspace-transfer.c

connector/userns: replace netlink uses of cap_raised() with capable()

2012-05-10 23:21:39 -04:00

dm-log-userspace-transfer.h

…

dm-log.c

dm: use memweight()

2012-07-30 17:25:16 -07:00

dm-mpath.c

dm mpath: fix check for null mpio in end_io fn

2012-10-12 16:59:42 +01:00

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-queue-length.c

dm: reject trailing characters in sccanf input

2012-03-28 18:41:26 +01:00

dm-raid1.c

workqueue: deprecate flush[_delayed]_work_sync()

2012-08-20 14:51:24 -07:00

dm-raid.c

DM RAID: Fix for "sync" directive ineffectiveness

2012-10-11 13:42:19 +11:00

dm-region-hash.c

dm raid1: fix crash with mirror recovery and discard

2012-07-20 14:25:03 +01:00

dm-round-robin.c

dm: reject trailing characters in sccanf input

2012-03-28 18:41:26 +01:00

dm-service-time.c

dm: reject trailing characters in sccanf input

2012-03-28 18:41:26 +01:00

dm-snap-persistent.c

md: Add in export.h for files using EXPORT_SYMBOL

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

dm-snap-transient.c

md: Add in export.h for files using EXPORT_SYMBOL

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

dm-snap.c

dm thin: commit before gathering status

2012-07-27 15:08:16 +01:00

dm-stripe.c

workqueue: deprecate flush[_delayed]_work_sync()

2012-08-20 14:51:24 -07:00

dm-sysfs.c

Driver core: Constify struct sysfs_ops in struct kobj_type

2010-03-07 17:04:49 -08:00

dm-table.c

dm: retain table limits when swapping to new table with no devices

2012-09-26 23:45:45 +01:00

dm-target.c

dm: error return error for discards

2010-08-12 04:14:14 +01:00

dm-thin-metadata.c

dm thin metadata: introduce dm_pool_abort_metadata

2012-07-27 15:08:15 +01:00

dm-thin-metadata.h

dm thin metadata: introduce dm_pool_abort_metadata

2012-07-27 15:08:15 +01:00

dm-thin.c

dm thin: move bio_prison code to separate module

2012-10-12 21:02:13 +01:00

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.c

dm: use ACCESS_ONCE for sysfs values

2012-10-12 16:59:46 +01:00

dm-zero.c

dm: zero silently drop discards

2010-08-12 04:14:12 +01:00

dm.c

dm: fix deadlock with request based dm and queue request_fn recursion

2012-11-23 14:32:54 +01:00

dm.h

dm: retain table limits when swapping to new table with no devices

2012-09-26 23:45:45 +01:00

faulty.c

md faulty: use disk_stack_limits()

2012-10-22 10:44:55 +11:00

Kconfig

dm thin: move bio_prison code to separate module

2012-10-12 21:02:13 +01:00

linear.c

md: linear supports TRIM

2012-10-11 13:08:44 +11:00

linear.h

md/linear: typedef removal: linear_conf_t -> struct linear_conf

2011-10-11 16:48:54 +11:00

Makefile

dm thin: move bio_prison code to separate module

2012-10-12 21:02:13 +01:00

md.c

md updates for 3.7

2012-10-13 13:22:01 -07:00

md.h

Subject: [PATCH] md:change resync_mismatches to atomic64_t to avoid races

2012-10-11 14:17:59 +11:00

multipath.c

MD: change the parameter of md thread

2012-10-11 13:34:00 +11:00

multipath.h

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

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

raid0.c

md: raid 0 supports TRIM

2012-10-11 13:25:44 +11:00

raid0.h

md: add proper merge_bvec handling to RAID0 and Linear.

2012-03-19 12:46:39 +11:00

raid1.c

md/raid1: Fix assembling of arrays containing Replacements.

2012-10-31 11:42:03 +11:00

raid1.h

md/raid1: prevent merging too large request

2012-07-31 10:03:53 +10:00

raid5.c

md updates for 3.7

2012-10-13 13:22:01 -07:00

raid5.h

MD: raid5 trim support

2012-10-11 13:49:05 +11:00

raid10.c

MD RAID10: Fix oops when creating RAID10 arrays via dm-raid.c

2012-10-31 11:42:30 +11:00

raid10.h

md/raid10: fix problem with on-stack allocation of r10bio structure.

2012-08-18 09:51:42 +10:00