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NeilBrown d63a5a74de [PATCH] lockdep: avoid lockdep warning in md 
md_open takes ->reconfig_mutex which causes lockdep to complain.  This
(normally) doesn't have deadlock potential as the possible conflict is with a
reconfig_mutex in a different device.

I say "normally" because if a loop were created in the array->member hierarchy
a deadlock could happen.  However that causes bigger problems than a deadlock
and should be fixed independently.

So we flag the lock in md_open as a nested lock.  This requires defining
mutex_lock_interruptible_nested.

Cc: Ingo Molnar <mingo@elte.hu>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-08 08:28:39 -08:00
..
acpi [PATCH] slab: remove kmem_cache_t 2006-12-07 08:39:25 -08:00
asm-alpha [PATCH] Pass struct dev pointer to dma_cache_sync() 2006-12-07 08:39:41 -08:00
asm-arm Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm 2006-12-07 15:40:39 -08:00
asm-arm26 [PATCH] cleanup asm/setup.h userspace visibility 2006-12-07 08:39:46 -08:00
asm-avr32 Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm 2006-12-07 15:40:39 -08:00
asm-cris [PATCH] include/asm-cris/: "extern inline" -> "static inline" 2006-12-07 08:39:45 -08:00
asm-frv [PATCH] cleanup asm/setup.h userspace visibility 2006-12-07 08:39:46 -08:00
asm-generic Merge branch 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6 2006-12-07 08:59:11 -08:00
asm-h8300 [PATCH] include/asm-h8300/: "extern inline" -> "static inline" 2006-12-07 08:39:45 -08:00
asm-i386 Merge branch 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6 2006-12-07 08:59:11 -08:00
asm-ia64 Merge branch 'release' of master.kernel.org:/pub/scm/linux/kernel/git/aegl/linux-2.6 2006-12-07 15:39:22 -08:00
asm-m32r [PATCH] m32r: bootloader support for OPSPUT platform 2006-12-08 08:28:37 -08:00
asm-m68k [PATCH] cleanup asm/setup.h userspace visibility 2006-12-07 08:39:46 -08:00
asm-m68knommu [PATCH] cleanup asm/setup.h userspace visibility 2006-12-07 08:39:46 -08:00
asm-mips [PATCH] cleanup asm/setup.h userspace visibility 2006-12-07 08:39:46 -08:00
asm-parisc [PATCH] Pass struct dev pointer to dma_cache_sync() 2006-12-07 08:39:41 -08:00
asm-powerpc [PATCH] cleanup asm/setup.h userspace visibility 2006-12-07 08:39:46 -08:00
asm-ppc [PATCH] mm: pagefault_{disable,enable}() 2006-12-07 08:39:21 -08:00
asm-s390 [PATCH] cleanup asm/setup.h userspace visibility 2006-12-07 08:39:46 -08:00
asm-sh [PATCH] cleanup asm/setup.h userspace visibility 2006-12-07 08:39:46 -08:00
asm-sh64 [PATCH] cleanup asm/setup.h userspace visibility 2006-12-07 08:39:46 -08:00
asm-sparc [PATCH] remove kernel syscalls 2006-12-07 08:39:37 -08:00
asm-sparc64 [PATCH] Pass struct dev pointer to dma_cache_sync() 2006-12-07 08:39:41 -08:00
asm-um [PATCH] Pass struct dev pointer to dma_cache_sync() 2006-12-07 08:39:41 -08:00
asm-v850 [PATCH] remove kernel syscalls 2006-12-07 08:39:37 -08:00
asm-x86_64 Merge branch 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6 2006-12-07 08:59:11 -08:00
asm-xtensa [PATCH] Pass struct dev pointer to dma_cache_sync() 2006-12-07 08:39:41 -08:00
crypto [CRYPTO] lib: table driven multiplications in GF(2^128) 2006-12-06 18:38:55 -08:00
keys
linux [PATCH] lockdep: avoid lockdep warning in md 2006-12-08 08:28:39 -08:00
math-emu
media V4L/DVB (4666): Ensure the WM8775 driver is loaded generically for any board. 2006-10-03 15:13:48 -03:00
mtd Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 2006-10-01 17:55:53 +01:00
net Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2006-12-07 09:05:15 -08:00
pcmcia [PATCH] pcmcia: multifunction card handling fixes 2006-12-04 20:09:15 -05:00
rdma IB/cm: Fix automatic path migration support 2006-11-29 15:33:10 -08:00
rxrpc
scsi [PATCH] slab: remove kmem_cache_t 2006-12-07 08:39:25 -08:00
sound Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 2006-12-05 17:01:28 +00:00
video fix file specification in comments 2006-10-03 23:01:26 +02:00
Kbuild