[patch 03/12] mm: oom_kill: switch test-and-clear of known TIF_MEMDIE to clear

Johannes Weiner
2015-03-25T06:17:41Z

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>
---
mm/oom_kill.c | 3 +--
1 file changed, 1 insertion(+), 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);
/*
--
2.3.3