Joe Thornber 66cb1910df dm cache: fix a race condition between queuing new migrations and quiescing for a shutdown ... The code that was trying to do this was inadequate. The postsuspend method (in ioctl context), needs to wait for the worker thread to acknowledge the request to quiesce. Otherwise the migration count may drop to zero temporarily before the worker thread realises we're quiescing. In this case the target will be taken down, but the worker thread may have issued a new migration, which will cause an oops when it completes. Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> Cc: stable@vger.kernel.org # 3.9+		2013-11-09 17:55:50 -05:00
..
bcache	bcache: Fix a null ptr deref regression	2013-10-10 18:17:39 -07:00
persistent-data	dm array: fix bug in growing array	2013-11-05 11:20:50 -05:00
bitmap.c	md: replace strict_strto*() with kstrto*()	2013-06-14 08:10:26 +10:00
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: add cache target	2013-03-01 22:45:51 +00:00
dm-bio-prison.h	dm: add cache target	2013-03-01 22:45:51 +00:00
dm-bio-record.h
dm-bufio.c	drivers: convert shrinkers to new count/scan API	2013-09-10 18:56:32 -04:00
dm-bufio.h
dm-cache-block-types.h	dm: add cache target	2013-03-01 22:45:51 +00:00
dm-cache-metadata.c	dm cache: replace memcpy with struct assignment	2013-05-10 14:37:18 +01:00
dm-cache-metadata.h	dm cache: policy ignore hints if generated by different version	2013-03-20 17:21:28 +00:00
dm-cache-policy-cleaner.c	dm cache: policy change version from string to integer set	2013-03-20 17:21:27 +00:00
dm-cache-policy-internal.h	dm cache: policy change version from string to integer set	2013-03-20 17:21:27 +00:00
dm-cache-policy-mq.c	dm cache policy mq: protect residency method with existing mutex	2013-11-09 17:54:34 -05:00
dm-cache-policy.c	dm cache: policy change version from string to integer set	2013-03-20 17:21:27 +00:00
dm-cache-policy.h	dm cache policy: fix description of lookup fn	2013-05-10 14:37:17 +01:00
dm-cache-target.c	dm cache: fix a race condition between queuing new migrations and quiescing for a shutdown	2013-11-09 17:55:50 -05:00
dm-crypt.c	dm: stop using WQ_NON_REENTRANT	2013-08-23 09:02:13 -04:00
dm-delay.c	dm: rename request variables to bios	2013-03-01 22:45:47 +00:00
dm-exception-store.c	dm: replace simple_strtoul	2012-07-27 15:07:59 +01:00
dm-exception-store.h
dm-flakey.c	dm flakey: correct ctr alloc failure mesg	2013-07-10 23:41:17 +01:00
dm-io.c	dm: add reserved_bio_based_ios module parameter	2013-09-23 10:42:24 -04:00
dm-ioctl.c	dm: add statistics support	2013-09-05 20:46:06 -04:00
dm-kcopyd.c	dm: stop using WQ_NON_REENTRANT	2013-08-23 09:02:13 -04:00
dm-linear.c	dm: rename request variables to bios	2013-03-01 22:45:47 +00:00
dm-log-userspace-base.c
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: requeue I/O during pg_init	2013-11-05 11:20:34 -05:00
dm-mpath.h
dm-path-selector.c
dm-path-selector.h
dm-queue-length.c
dm-raid.c	MD: Remember the last sync operation that was performed	2013-06-26 12:38:24 +10:00
dm-raid1.c	dm: stop using WQ_NON_REENTRANT	2013-08-23 09:02:13 -04:00
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-service-time.c
dm-snap-persistent.c	dm snapshot: workaround for a false positive lockdep warning	2013-09-20 10:36:34 -04:00
dm-snap-transient.c
dm-snap.c	dm-snapshot: fix performance degradation due to small hash size	2013-09-20 10:36:34 -04:00
dm-stats.c	dm stats: fix possible counter corruption on 32-bit systems	2013-09-18 14:41:06 -04:00
dm-stats.h	dm: add statistics support	2013-09-05 20:46:06 -04:00
dm-stripe.c	dm stripe: silence a couple sparse warnings	2013-09-06 11:36:01 -04:00
dm-switch.c	dm: add switch target	2013-07-10 23:41:19 +01:00
dm-sysfs.c
dm-table.c	dm: allocate buffer for messages with small number of arguments using GFP_NOIO	2013-10-31 13:55:45 -04:00
dm-target.c	dm: allow error target to replace bio-based and request-based targets	2013-09-05 20:46:05 -04:00
dm-thin-metadata.c	dm thin: generate event when metadata threshold passed	2013-05-10 14:37:21 +01:00
dm-thin-metadata.h	dm thin: generate event when metadata threshold passed	2013-05-10 14:37:21 +01:00
dm-thin.c	dm thin: do not expose non-zero discard limits if discards disabled	2013-09-23 10:42:06 -04:00
dm-uevent.c
dm-uevent.h
dm-verity.c	dm verity: use __ffs and __fls	2013-07-10 23:41:17 +01:00
dm-zero.c	dm: rename request variables to bios	2013-03-01 22:45:47 +00:00
dm.c	dm: add reserved_bio_based_ios module parameter	2013-09-23 10:42:24 -04:00
dm.h	dm: add reserved_bio_based_ios module parameter	2013-09-23 10:42:24 -04:00
faulty.c	block: Add bio_end_sector()	2013-03-23 14:15:29 -07:00
Kconfig	dm: add switch target	2013-07-10 23:41:19 +01:00
linear.c	block: Add bio_end_sector()	2013-03-23 14:15:29 -07:00
linear.h
Makefile	dm: add statistics support	2013-09-05 20:46:06 -04:00
md.c	md: avoid deadlock when dirty buffers during md_stop.	2013-08-27 16:45:00 +10:00
md.h	md: avoid deadlock when dirty buffers during md_stop.	2013-08-27 16:45:00 +10:00
multipath.c	MD: change the parameter of md thread	2012-10-11 13:34:00 +11:00
multipath.h
raid0.c	md: fix buglet in RAID5 -> RAID0 conversion.	2013-06-26 12:38:19 +10:00
raid0.h
raid1.c	md/raid1: fix bio handling problems in process_checks()	2013-07-18 14:18:04 +10:00
raid1.h	md/raid1: prevent merging too large request	2012-07-31 10:03:53 +10:00
raid5.c	raid5: only wakeup necessary threads	2013-09-02 10:31:29 +10:00
raid5.h	raid5: only wakeup necessary threads	2013-09-02 10:31:29 +10:00
raid10.c	md/raid10: remove use-after-free bug.	2013-07-25 16:46:53 +10:00
raid10.h	MD RAID10: Improve redundancy for 'far' and 'offset' algorithms (part 1)	2013-02-26 11:55:30 +11:00