Tetsuo Handa 9df10fb7b8 oom_reaper: avoid pointless atomic_inc_not_zero usage.
Since commit 36324a990cf5 ("oom: clear TIF_MEMDIE after oom_reaper
managed to unmap the address space") changed to use find_lock_task_mm()
for finding a mm_struct to reap, it is guaranteed that mm->mm_users > 0
because find_lock_task_mm() returns a task_struct with ->mm != NULL.
Therefore, we can safely use atomic_inc().

Link: http://lkml.kernel.org/r/1465024759-8074-1-git-send-email-penguin-kernel@I-love.SAKURA.ne.jp
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-06-24 17:23:52 -07:00
..
2016-05-26 20:00:28 -07:00
2015-06-24 17:49:45 -07:00
2016-05-23 11:18:01 -07:00
2016-05-23 17:04:14 -07:00
2016-03-17 15:09:34 -07:00
2016-05-26 20:00:28 -07:00
2015-09-08 15:35:28 -07:00
2016-05-27 15:57:31 -07:00
2016-03-17 15:09:34 -07:00
2015-11-05 19:34:48 -08:00
2016-05-27 15:57:31 -07:00
2016-03-17 15:09:34 -07:00
2016-05-19 15:20:54 -06:00
2016-05-23 17:04:14 -07:00
2016-06-03 15:06:22 -07:00
2016-05-20 17:58:30 -07:00