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Manfred Spraul ab465df9dd ipc/sem.c: Fix missing wakeups in do_smart_update_queue() ... do_smart_update_queue() is called when an operation (semop, semctl(SETVAL), semctl(SETALL), ...) modified the array. It must check which of the sleeping tasks can proceed. do_smart_update_queue() missed a few wakeups: - if a sleeping complex op was completed, then all per-semaphore queues must be scanned - not only those that were modified by *sops - if a sleeping simple op proceeded, then the global queue must be scanned again And: - the test for "|sops == NULL) before scanning the global queue is not required: If the global queue is empty, then it doesn't need to be scanned - regardless of the reason for calling do_smart_update_queue() The patch is not optimized, i.e. even completing a wait-for-zero operation causes a rescan. This is done to keep the patch as simple as possible. Signed-off-by: Manfred Spraul <manfred@colorfullife.com> Acked-by: Davidlohr Bueso <davidlohr.bueso@hp.com> Cc: Rik van Riel <riel@redhat.com> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		12 years ago
..
Makefile	…
compat.c	get rid of union semop in sys_semctl(2) arguments	12 years ago
compat_mq.c	…
ipc_sysctl.c	ipc: add sysctl to specify desired next object id	12 years ago
ipcns_notifier.c	…
mq_sysctl.c	mqueue: separate mqueue default value from maximum value	13 years ago
mqueue.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace	12 years ago
msg.c	ipc/msg.c: use list_for_each_entry_[safe] for list traversing	12 years ago
msgutil.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	12 years ago
namespace.c	proc: Split the namespace stuff out into linux/proc_ns.h	12 years ago
sem.c	ipc/sem.c: Fix missing wakeups in do_smart_update_queue()	12 years ago
shm.c	shm: fix null pointer deref when userspace specifies invalid hugepage size	12 years ago
syscall.c	get rid of union semop in sys_semctl(2) arguments	12 years ago
util.c	ipc_schedule_free() can do vfree() directly now	12 years ago
util.h	ipc,sem: fine grained locking for semtimedop	12 years ago