mm: oom: do not reap task if there are live threads in threadgroup
authorVladimir Davydov <vdavydov@virtuozzo.com>
Fri, 27 May 2016 21:27:21 +0000 (14:27 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Fri, 27 May 2016 21:49:37 +0000 (14:49 -0700)
commitedd9f7230f591b7988533b1cafb07f3c03555f19
treec925a5057f674e7477e9e652072eb2254e6971b9
parent9ecd10b7a0270803fd5f36ab93173e6d5b41b895
mm: oom: do not reap task if there are live threads in threadgroup

If the current process is exiting, we don't invoke oom killer, instead
we give it access to memory reserves and try to reap its mm in case
nobody is going to use it.  There's a mistake in the code performing
this check - we just ignore any process of the same thread group no
matter if it is exiting or not - see try_oom_reaper.  Fix it.

Link: http://lkml.kernel.org/r/1464087628-7318-1-git-send-email-vdavydov@virtuozzo.com
Fixes: 3ef22dfff239 ("oom, oom_reaper: try to reap tasks which skip regular OOM killer path")Signed-off-by: Vladimir Davydov <vdavydov@virtuozzo.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
mm/oom_kill.c