Messages in this thread Patch in this message | | | From | Johannes Weiner <> | Subject | [PATCH 1/9] mm: oom_kill: remove unnecessary locking in oom_enable() | Date | Mon, 27 Apr 2015 15:05:47 -0400 |
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Setting oom_killer_disabled to false is atomic, there is no need for further synchronization with ongoing allocations trying to OOM-kill.
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Acked-by: Michal Hocko <mhocko@suse.cz> Acked-by: David Rientjes <rientjes@google.com> --- mm/oom_kill.c | 2 -- 1 file changed, 2 deletions(-)
diff --git a/mm/oom_kill.c b/mm/oom_kill.c index 2b665da..73763e4 100644 --- a/mm/oom_kill.c +++ b/mm/oom_kill.c @@ -488,9 +488,7 @@ 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)) -- 2.3.4
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