diff options
| author | Johannes Weiner <hannes@cmpxchg.org> | 2015-06-24 16:57:04 -0700 |
|---|---|---|
| committer | Moyster <oysterized@gmail.com> | 2019-07-08 13:36:44 +0200 |
| commit | 5dd152d7351b3805f59b2b1f624722ab2f3c5fd8 (patch) | |
| tree | 03cb9d2ede4bb6e9776c7522c3e9197775f1fd7c | |
| parent | 5fc5b1ddee5404a7629dd7045f54eaf8941bc11c (diff) | |
mm: oom_kill: remove unnecessary locking in oom_enable()
Setting oom_killer_disabled to false is atomic, there is no need for
further synchronization with ongoing allocations trying to OOM-kill.
Change-Id: I0d11c89d0949d9e9fbf870d50ef4eb398a78518f
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Michal Hocko <mhocko@suse.cz>
Acked-by: David Rientjes <rientjes@google.com>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | mm/oom_kill.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/mm/oom_kill.c b/mm/oom_kill.c index 885635131..d908addf2 100644 --- a/mm/oom_kill.c +++ b/mm/oom_kill.c @@ -504,9 +504,7 @@ bool oom_killer_disable(void) */ void oom_killer_enable(void) { - down_write(&oom_sem); oom_killer_disabled = false; - up_write(&oom_sem); } #define K(x) ((x) << (PAGE_SHIFT-10)) |