diff options
| author | Herton R. Krzesinski <herton@redhat.com> | 2015-08-15 00:35:05 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-08-15 00:56:32 +0200 |
| commit | a97955844807e327df11aa33869009d14d6b7de0 (patch) | |
| tree | 20d83d811aa907898be0b09b6c4c94f8789e7224 /mm/memory-failure.c | |
| parent | ipc,sem: fix use after free on IPC_RMID after a task using same semaphore set... (diff) | |
| download | linux-a97955844807e327df11aa33869009d14d6b7de0.tar.xz linux-a97955844807e327df11aa33869009d14d6b7de0.zip | |
ipc,sem: remove uneeded sem_undo_list lock usage in exit_sem()
After we acquire the sma->sem_perm lock in exit_sem(), we are protected
against a racing IPC_RMID operation. Also at that point, we are the last
user of sem_undo_list. Therefore it isn't required that we acquire or use
ulp->lock.
Signed-off-by: Herton R. Krzesinski <herton@redhat.com>
Acked-by: Manfred Spraul <manfred@colorfullife.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: Rafael Aquini <aquini@redhat.com>
CC: Aristeu Rozanski <aris@redhat.com>
Cc: David Jeffery <djeffery@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/memory-failure.c')
0 files changed, 0 insertions, 0 deletions