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[PATCH] atomic: inc_not_zero
authorNick Piggin <nickpiggin@yahoo.com.au>
Mon, 14 Nov 2005 00:07:25 +0000 (16:07 -0800)
committerLinus Torvalds <torvalds@g5.osdl.org>
Mon, 14 Nov 2005 02:14:16 +0000 (18:14 -0800)
commit8426e1f6af0fd7f44d040af7263750c5a52f3cc3
tree827bd2588c2b73d11cea6869de8ff42dba134375tree | snapshot
parent4a6dae6d382e9edf3ff440b819e554ed706359bccommit | diff
[PATCH] atomic: inc_not_zero

Introduce an atomic_inc_not_zero operation.  Make this a special case of
atomic_add_unless because lockless pagecache actually wants
atomic_inc_not_negativeone due to its offset refcount.

Signed-off-by: Nick Piggin <npiggin@suse.de>
Cc: "Paul E. McKenney" <paulmck@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
23 files changed:
Documentation/atomic_ops.txt diff | blob | history
arch/sparc/lib/atomic32.c diff | blob | history
include/asm-alpha/atomic.h diff | blob | history
include/asm-arm/atomic.h diff | blob | history
include/asm-arm26/atomic.h diff | blob | history
include/asm-cris/atomic.h diff | blob | history
include/asm-frv/atomic.h diff | blob | history
include/asm-h8300/atomic.h diff | blob | history
include/asm-i386/atomic.h diff | blob | history
include/asm-ia64/atomic.h diff | blob | history
include/asm-m68k/atomic.h diff | blob | history
include/asm-m68knommu/atomic.h diff | blob | history
include/asm-mips/atomic.h diff | blob | history
include/asm-parisc/atomic.h diff | blob | history
include/asm-powerpc/atomic.h diff | blob | history
include/asm-s390/atomic.h diff | blob | history
include/asm-sh/atomic.h diff | blob | history
include/asm-sh64/atomic.h diff | blob | history
include/asm-sparc/atomic.h diff | blob | history
include/asm-sparc64/atomic.h diff | blob | history
include/asm-v850/atomic.h diff | blob | history
include/asm-x86_64/atomic.h diff | blob | history
include/asm-xtensa/atomic.h diff | blob | history
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