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>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index b2f081f..4b9547b 100644
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -435,8 +435,7 @@
*/
void exit_oom_victim(void)
{
- if (!test_and_clear_thread_flag(TIF_MEMDIE))
- return;
+ clear_thread_flag(TIF_MEMDIE);
down_read(&oom_sem);
/*