Manfred Spraul b6e90822e7 ipc/sem.c: optimize if semops fail ...

Reduce the amount of scanning of the list of pending semaphore operations:
If try_atomic_semop failed, then no changes were applied.  Thus no need to
restart.

Additionally, this patch correct an incorrect comment: It's possible to
wait for arbitrary semaphore values (do a dec by <x>, wait-for-zero, inc
by <x> in one atomic operation)

Both changes are from Nick Piggin, the patch is the result of a different
split of the individual changes.

Signed-off-by: Manfred Spraul <manfred@colorfullife.com>
Cc: Nick Piggin <npiggin@suse.de>
Cc: Pierre Peiffer <peifferp@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2009-12-16 07:20:09 -08:00

..

compat_mq.c

Linux-2.6.12-rc2

2005-04-16 15:20:36 -07:00

compat.c

fix logic error in ipc compat semctl()

2007-07-06 10:23:43 -07:00

ipc_sysctl.c

sysctl ipc: Remove dead binary sysctl support code.

2009-11-12 02:04:54 -08:00

ipcns_notifier.c

ipc: do not use a negative value to re-enable msgmni automatic recomputing

2008-07-25 10:53:42 -07:00

Makefile

namespaces: mqueue namespace: adapt sysctl

2009-04-07 08:31:09 -07:00

mq_sysctl.c

sysctl ipc: Remove dead binary sysctl support code.

2009-11-12 02:04:54 -08:00

mqueue.c

const: mark remaining super_operations const

2009-09-22 07:17:24 -07:00

msg.c

ipc ns: fix memory leak (idr)

2009-12-16 07:20:09 -08:00

msgutil.c

namespaces: ipc namespaces: implement support for posix msqueues

2009-04-07 08:31:09 -07:00

namespace.c

ipcns: make free_ipc_ns() static

2009-06-18 13:03:56 -07:00

sem.c

ipc/sem.c: optimize if semops fail

2009-12-16 07:20:09 -08:00

shm.c

ipc ns: fix memory leak (idr)

2009-12-16 07:20:09 -08:00

util.c

seq_file: constify seq_operations

2009-09-23 07:39:29 -07:00

util.h

ipc: unbreak 32-bit shmctl/semctl/msgctl

2009-06-21 12:48:43 -07:00