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mm: oom_kill: switch test-and-clear of known TIF_MEMDIE to clear

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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 <[email protected]>
Acked-by: David Rientjes <[email protected]>
Acked-by: Michal Hocko <[email protected]>
Cc: Tetsuo Handa <[email protected]>
Cc: Andrea Arcangeli <[email protected]>
Cc: Dave Chinner <[email protected]>
Cc: Vlastimil Babka <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Johannes Weiner authored and Linus Torvalds committed 2015-06-24 17:49:43 -07:00
1 parent 16e951966f
commit 464027785f
1 file changed
+1 -2
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mm/oom_kill.c
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@@ -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);
/*