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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
..
acpi ACPI: increase ACPI_MAX_REFERENCE_COUNT for larger systems 2007-01-02 00:18:52 -05:00
asm-alpha [PATCH] FD_ZERO build fix 2007-01-11 18:18:22 -08:00
asm-arm [ARM] Resolve fuse and direct-IO failures due to missing cache flushes 2007-01-08 19:49:58 +00:00
asm-arm26 [PATCH] Optimize D-cache alias handling on fork 2006-12-13 09:27:08 -08:00
asm-avr32 [PATCH] Optimize D-cache alias handling on fork 2006-12-13 09:27:08 -08:00
asm-cris [PATCH] Optimize D-cache alias handling on fork 2006-12-13 09:27:08 -08:00
asm-frv [PATCH] Optimize D-cache alias handling on fork 2006-12-13 09:27:08 -08:00
asm-generic [PATCH] change WARN_ON back to "BUG: at ..." 2006-12-30 10:55:54 -08:00
asm-h8300 [PATCH] Optimize D-cache alias handling on fork 2006-12-13 09:27:08 -08:00
asm-i386 [PATCH] i386 vDSO: use VM_ALWAYSDUMP 2007-01-26 13:50:58 -08:00
asm-ia64 [PATCH] fix prototype of csum_ipv6_magic() (ia64) 2007-01-23 11:09:49 -08:00
asm-m32r [PATCH] Optimize D-cache alias handling on fork 2006-12-13 09:27:08 -08:00
asm-m68k [PATCH] Optimize D-cache alias handling on fork 2006-12-13 09:27:08 -08:00
asm-m68knommu [PATCH] Optimize D-cache alias handling on fork 2006-12-13 09:27:08 -08:00
asm-mips [MIPS] Fix wrong checksum calculation on 64-bit MIPS 2007-01-24 19:23:22 +00:00
asm-parisc [ARM] pass vma for flush_anon_page() 2007-01-08 19:49:54 +00:00
asm-powerpc [POWERPC] atomic_dec_if_positive sign extension fix 2007-01-22 21:27:36 +11:00
asm-ppc Merge branch 'for_paulus' of master.kernel.org:/pub/scm/linux/kernel/git/galak/powerpc 2006-12-11 16:31:42 +11:00
asm-s390 [PATCH] FD_ZERO build fix 2007-01-11 18:18:22 -08:00
asm-sh [PATCH] Optimize D-cache alias handling on fork 2006-12-13 09:27:08 -08:00
asm-sh64 [PATCH] Optimize D-cache alias handling on fork 2006-12-13 09:27:08 -08:00
asm-sparc [SPARC64]: Fix of_iounmap() region release. 2006-12-31 14:06:05 -08:00
asm-sparc64 [SPARC64]: Fix of_iounmap() region release. 2006-12-31 14:06:05 -08:00
asm-um [PATCH] UML: add generic BUG support 2006-12-08 08:28:39 -08:00
asm-v850 [PATCH] Optimize D-cache alias handling on fork 2006-12-13 09:27:08 -08:00
asm-x86_64 [PATCH] x86_64: fix put_user for 64-bit constant 2007-01-25 17:50:37 -08:00
asm-xtensa [PATCH] FD_ZERO build fix 2007-01-11 18:18:22 -08:00
crypto [CRYPTO] lib: table driven multiplications in GF(2^128) 2006-12-06 18:38:55 -08:00
keys
linux [PATCH] md: fix potential memalloc deadlock in md 2007-01-26 13:51:00 -08:00
math-emu
media V4L/DVB (5001): Add two required headers on kernel 2.6.20-rc1 2006-12-27 14:20:46 -02:00
mtd
net [SCTP]: Correctly handle unexpected INIT-ACK chunk. 2007-01-23 20:25:46 -08:00
pcmcia [PATCH] pcmcia: multifunction card handling fixes 2006-12-04 20:09:15 -05:00
rdma IB: Fix ib_dma_alloc_coherent() wrapper 2006-12-15 13:57:26 -08:00
rxrpc
scsi [PATCH] slab: remove kmem_cache_t 2006-12-07 08:39:25 -08:00
sound [ALSA] version 1.0.14rc1 2007-01-09 10:57:25 +01:00
video [PATCH] sstfb: add sysfs interface 2006-12-13 09:05:55 -08:00
Kbuild