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2a2275d630
linux_dsm_epyc7002/drivers/md
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NeilBrown 2a2275d630 [PATCH] md: fix potential memalloc deadlock in md 
If a GFP_KERNEL allocation is attempted in md while the mddev_lock is held,
it is possible for a deadlock to eventuate.

This happens if the array was marked 'clean', and the memalloc triggers a
write-out to the md device.

For the writeout to succeed, the array must be marked 'dirty', and that
requires getting the mddev_lock.

So, before attempting a GFP_KERNEL allocation while holding the lock, make
sure the array is marked 'dirty' (unless it is currently read-only).

Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-01-26 13:51:00 -08:00
..
raid6test [PATCH] RAID6 Altivec fix 2005-09-17 11:49:58 -07:00
.gitignore gitignore: misc files 2006-01-01 22:21:50 +01:00
bitmap.c [PATCH] md: avoid reading past the end of a bitmap file 2007-01-26 13:50:59 -08:00
dm-bio-list.h [PATCH] dm: suspend: add noflush pushback 2006-12-08 08:29:09 -08:00
dm-bio-record.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
dm-crypt.c [PATCH] dm: map and endio symbolic return codes 2006-12-08 08:29:09 -08:00
dm-emc.c [PATCH] struct path: rename DM's struct path 2006-12-08 08:28:40 -08:00
dm-exception-store.c [PATCH] dm snapshot: fix metadata writing when suspending 2006-10-03 08:04:14 -07:00
dm-hw-handler.c BUG_ON() Conversion in md/dm-hw-handler.c 2006-03-24 18:36:27 +01:00
dm-hw-handler.h [PATCH] struct path: rename DM's struct path 2006-12-08 08:28:40 -08:00
dm-io.c [PATCH] dm io: fix bi_max_vecs 2006-12-08 08:29:08 -08:00
dm-io.h [PATCH] device-mapper: remove unused definition 2006-01-06 08:34:00 -08:00
dm-ioctl.c [PATCH] dm: ioctl: add noflush suspend 2006-12-08 08:29:09 -08:00
dm-linear.c [PATCH] dm: map and endio symbolic return codes 2006-12-08 08:29:09 -08:00
dm-log.c [PATCH] dm: raid1: reset sync_search on resume 2006-12-08 08:29:09 -08:00
dm-log.h [PATCH] dm: log: rename complete_resync_work 2006-12-08 08:29:09 -08:00
dm-mpath.c [PATCH] dm: mpath: use noflush suspending 2006-12-08 08:29:09 -08:00
dm-mpath.h [PATCH] struct path: rename DM's struct path 2006-12-08 08:28:40 -08:00
dm-path-selector.c BUG_ON() Conversion in md/dm-path-selector.c 2006-03-26 18:21:58 +02:00
dm-path-selector.h [PATCH] struct path: rename DM's struct path 2006-12-08 08:28:40 -08:00
dm-raid1.c [PATCH] dm: log: rename complete_resync_work 2006-12-08 08:29:09 -08:00
dm-round-robin.c [PATCH] struct path: rename DM's struct path 2006-12-08 08:28:40 -08:00
dm-snap.c [PATCH] make drivers/md/dm-snap.c:ksnapd static 2006-12-08 08:29:09 -08:00
dm-snap.h [PATCH] dm snapshot: add workqueue 2006-10-03 08:04:14 -07:00
dm-stripe.c [PATCH] dm: map and endio symbolic return codes 2006-12-08 08:29:09 -08:00
dm-table.c [PATCH] dm table: add target flush 2006-10-03 08:04:16 -07:00
dm-target.c [PATCH] dm: improve error message consistency 2006-06-26 09:58:36 -07:00
dm-zero.c [PATCH] dm: map and endio symbolic return codes 2006-12-08 08:29:09 -08:00
dm.c [PATCH] dm-multipath: fix stall on noflush suspend/resume 2007-01-26 13:51:00 -08:00
dm.h [PATCH] dm: suspend: add noflush pushback 2006-12-08 08:29:09 -08:00
faulty.c [PATCH] md: Don't assume that READ==0 and WRITE==1 - use the names explicitly 2006-12-13 09:05:48 -08:00
Kconfig [CRYPTO] dm-crypt: Select CRYPTO_CBC 2006-12-10 10:18:57 -08:00
kcopyd.c [PATCH] slab: remove kmem_cache_t 2006-12-07 08:39:25 -08:00
kcopyd.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
linear.c [PATCH] md: define backing_dev_info.congested_fn for raid0 and linear 2006-10-03 08:04:18 -07:00
Makefile [PATCH] md: merge raid5 and raid6 code 2006-06-26 09:58:37 -07:00
md.c [PATCH] md: fix potential memalloc deadlock in md 2007-01-26 13:51:00 -08:00
mktables.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
multipath.c [PATCH] md: fix up maintenance of ->degraded in multipath 2006-10-28 11:30:51 -07:00
raid0.c [PATCH] md: define backing_dev_info.congested_fn for raid0 and linear 2006-10-03 08:04:18 -07:00
raid1.c [PATCH] md: fix potential memalloc deadlock in md 2007-01-26 13:51:00 -08:00
raid5.c [PATCH] md: fix potential memalloc deadlock in md 2007-01-26 13:51:00 -08:00
raid6.h [PATCH] RAID6 Altivec fix 2005-09-17 11:49:58 -07:00
raid6algos.c [PATCH] drivers/md/raid6algos.c: fix a NULL dereference 2006-06-23 07:43:08 -07:00
raid6altivec.uc [PATCH] RAID6 Altivec fix 2005-09-17 11:49:58 -07:00
raid6int.uc Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
raid6mmx.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
raid6recov.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
raid6sse1.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
raid6sse2.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
raid6x86.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
raid10.c [PATCH] md: pass down BIO_RW_SYNC in raid{1,10} 2007-01-11 18:18:21 -08:00
unroll.pl Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
xor.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00