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authorMichal Hocko <mhocko@suse.com>2017-09-06 16:24:53 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2017-09-06 17:27:30 -0700
commitda99ecf117fce6570bd3989263d68ee0007e1249 (patch)
tree01b2db0be6a57d82c6d0a5939fa0c0b5fbc5e6f8 /mm/memcontrol.c
parentcd04ae1e2dc8e3651b8c427ec1b9500c6eed7b90 (diff)
downloadlinux-da99ecf117fce6570bd3989263d68ee0007e1249.tar.bz2
mm: replace TIF_MEMDIE checks by tsk_is_oom_victim
TIF_MEMDIE is set only to the tasks whick were either directly selected by the OOM killer or passed through mark_oom_victim from the allocator path. tsk_is_oom_victim is more generic and allows to identify all tasks (threads) which share the mm with the oom victim. Please note that the freezer still needs to check TIF_MEMDIE because we cannot thaw tasks which do not participage in oom_victims counting otherwise a !TIF_MEMDIE task could interfere after oom_disbale returns. Link: http://lkml.kernel.org/r/20170810075019.28998-3-mhocko@kernel.org Signed-off-by: Michal Hocko <mhocko@suse.com> Cc: Mel Gorman <mgorman@techsingularity.net> Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Cc: David Rientjes <rientjes@google.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Roman Gushchin <guro@fb.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/memcontrol.c')
-rw-r--r--mm/memcontrol.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index c1f9b79817d7..ad15850ee157 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -1917,7 +1917,7 @@ retry:
* bypass the last charges so that they can exit quickly and
* free their memory.
*/
- if (unlikely(test_thread_flag(TIF_MEMDIE) ||
+ if (unlikely(tsk_is_oom_victim(current) ||
fatal_signal_pending(current) ||
current->flags & PF_EXITING))
goto force;