Chandra Seetharaman 8a57dfc6f9 dm: avoid destroying table in dm_any_congested ... dm_any_congested() just checks for the DMF_BLOCK_IO and has no code to make sure that suspend waits for dm_any_congested() to complete. This patch adds such a check. Without it, a race can occur with dm_table_put() attempting to destroying the table in the wrong thread, the one running dm_any_congested() which is meant to be quick and return immediately. Two examples of problems: 1. Sleeping functions called from congested code, the caller of which holds a spin lock. 2. An ABBA deadlock between pdflush and multipathd. The two locks in contention are inode lock and kernel lock. Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com> Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>		2008-11-13 23:39:14 +00:00
..
raid6test	md: raid6: clean up the style of raid6test/test.c	2008-02-06 10:41:18 -08:00
.gitignore
bitmap.c	Fix problem with waiting while holding rcu read lock in md/bitmap.c	2008-09-01 12:48:13 +10:00
dm-bio-list.h	dm: bio_list macro renaming	2007-10-20 02:01:11 +01:00
dm-bio-record.h
dm-crypt.c	dm crypt: remove waitqueue	2008-10-21 17:45:03 +01:00
dm-delay.c	dm: remove dm header from targets	2008-10-21 17:44:59 +01:00
dm-exception-store.c	dm: remove dm header from targets	2008-10-21 17:44:59 +01:00
dm-io.c	dm: remove dm header from targets	2008-10-21 17:44:59 +01:00
dm-ioctl.c	[PATCH] introduce fmode_t, do annotations	2008-10-21 07:47:06 -04:00
dm-kcopyd.c	dm: remove dm header from targets	2008-10-21 17:44:59 +01:00
dm-linear.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/viro/bdev	2008-10-23 10:23:07 -07:00
dm-log.c	dm: remove dm header from targets	2008-10-21 17:44:59 +01:00
dm-mpath.c	dm mpath: warn if args ignored	2008-11-13 23:39:06 +00:00
dm-mpath.h	dm mpath: remove is_active from struct dm_path	2008-10-10 13:36:58 +01:00
dm-path-selector.c	dm: remove dm header from targets	2008-10-21 17:44:59 +01:00
dm-path-selector.h
dm-raid1.c	dm raid1: flush workqueue before destruction	2008-11-13 23:38:52 +00:00
dm-region-hash.c	dm raid1: separate region_hash interface part1	2008-10-21 17:45:06 +01:00
dm-round-robin.c	dm: remove dm header from targets	2008-10-21 17:44:59 +01:00
dm-snap.c	dm snapshot: wait for chunks in destructor	2008-10-30 13:33:16 +00:00
dm-snap.h	dm snapshot: wait for chunks in destructor	2008-10-30 13:33:16 +00:00
dm-stripe.c	dm stripe: fix init failure	2008-11-13 23:38:56 +00:00
dm-table.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/viro/bdev	2008-10-23 10:23:07 -07:00
dm-target.c
dm-uevent.c	md: replace remaining __FUNCTION__ occurrences	2008-04-28 08:58:42 -07:00
dm-uevent.h	dm: uevent generate events	2007-10-20 02:01:26 +01:00
dm-zero.c	dm: remove dm header from targets	2008-10-21 17:44:59 +01:00
dm.c	dm: avoid destroying table in dm_any_congested	2008-11-13 23:39:14 +00:00
dm.h	dm: publish array_too_big	2008-10-21 17:44:57 +01:00
faulty.c	md: check for memory allocation failure in faulty personality	2008-10-16 14:16:53 +11:00
Kconfig	raid, fastboot: hide RAID autodetect option if MD is compiled as a module	2008-10-12 08:25:14 -07:00
linear.c	md: linear: Fix a division by zero bug for very small arrays.	2008-11-06 19:41:24 +11:00
Makefile	dm raid1: separate region_hash interface part1	2008-10-21 17:45:06 +01:00
md.c	md: revert the recent addition of a call to the BLKRRPART ioctl.	2008-11-06 17:28:01 +11:00
mktables.c	md: raid6: Fix mktable.c	2008-02-06 10:41:18 -08:00
multipath.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6	2008-10-17 09:00:23 -07:00
raid0.c	md: Remove unnecessary #includes, #defines, and function declarations.	2008-10-13 11:55:12 +11:00
raid1.c	md: build failure due to missing delay.h	2008-10-15 21:57:05 +11:00
raid5.c	md: Relax minimum size restrictions on chunk_size.	2008-10-13 11:55:12 +11:00
raid6.h	md: Remove unnecessary #includes, #defines, and function declarations.	2008-10-13 11:55:12 +11:00
raid6algos.c	drivers/md: use time_before, time_before_eq, etc	2008-04-28 08:58:42 -07:00
raid6altivec.uc
raid6int.uc
raid6mmx.c	x86 merge fallout: uml	2007-10-29 07:41:32 -07:00
raid6recov.c
raid6sse1.c	x86 merge fallout: uml	2007-10-29 07:41:32 -07:00
raid6sse2.c	x86 merge fallout: uml	2007-10-29 07:41:32 -07:00
raid6x86.h	x86 merge fallout: uml	2007-10-29 07:41:32 -07:00
raid10.c	md: fix bug in raid10 recovery.	2008-11-06 17:28:20 +11:00
unroll.pl