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authorJohannes Weiner <hannes@cmpxchg.org>2015-05-29 10:15:28 +1000
committerStephen Rothwell <sfr@canb.auug.org.au>2015-05-29 10:15:28 +1000
commit93c4ae3019787b4f0590bfa36a63e3aabb1c02bb (patch)
treeb273e5b81575f73a9a47fc37bd32e6b1868471de /mm
parentad2a6447a670645f6610bfc1511489fad94cc1b2 (diff)
mm: oom_kill: switch test-and-clear of known TIF_MEMDIE to clear
exit_oom_victim() already knows that TIF_MEMDIE is set, and nobody else can clear it concurrently. Use clear_thread_flag() directly. Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Acked-by: David Rientjes <rientjes@google.com> Acked-by: Michal Hocko <mhocko@suse.cz> 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>
Diffstat (limited to 'mm')
-rw-r--r--mm/oom_kill.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index b2f081fe4b1a..4b9547be9170 100644
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -435,8 +435,7 @@ void mark_oom_victim(struct task_struct *tsk)
*/
void exit_oom_victim(void)
{
- if (!test_and_clear_thread_flag(TIF_MEMDIE))
- return;
+ clear_thread_flag(TIF_MEMDIE);
down_read(&oom_sem);
/*