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linux-2.6/include/linux/raid
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
..
bitmap.h [PATCH] md: endian annotations for the bitmap superblock 2006-10-21 13:35:05 -07:00
Kbuild
linear.h
md.h [PATCH] md: fix potential memalloc deadlock in md 2007-01-26 13:51:00 -08:00
md_k.h
md_p.h
md_u.h
multipath.h
raid0.h
raid1.h
raid5.h [PATCH] md: allow reads that have bypassed the cache to be retried on failure 2006-12-10 09:57:20 -08:00
raid10.h
xor.h