diff options
| author | Michal Hocko <mhocko@suse.com> | 2017-09-07 01:24:53 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-09-07 02:27:30 +0200 |
| commit | da99ecf117fce6570bd3989263d68ee0007e1249 (patch) | |
| tree | 01b2db0be6a57d82c6d0a5939fa0c0b5fbc5e6f8 /mm | |
| parent | mm, oom: do not rely on TIF_MEMDIE for memory reserves access (diff) | |
| download | linux-da99ecf117fce6570bd3989263d68ee0007e1249.tar.xz linux-da99ecf117fce6570bd3989263d68ee0007e1249.zip | |
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 '')
| -rw-r--r-- | mm/memcontrol.c | 2 |
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; |