diff options
| author | Johannes Weiner <hannes@cmpxchg.org> | 2013-09-12 15:13:42 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-11-21 09:22:56 -0800 |
| commit | 11f34787b50ce71f66b85ad8790beaa5eee3f897 (patch) | |
| tree | adcde8d7963d1426991067916366ae3f5ec11c8a /mm/memcontrol.c | |
| parent | ed368ae78e6eafc10368e97246610d676bec3060 (diff) | |
mm: memcg: enable memcg OOM killer only for user faults
commit 519e52473ebe9db5cdef44670d5a97f1fd53d721 upstream.
System calls and kernel faults (uaccess, gup) can handle an out of memory
situation gracefully and just return -ENOMEM.
Enable the memcg OOM killer only for user faults, where it's really the
only option available.
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Michal Hocko <mhocko@suse.cz>
Cc: David Rientjes <rientjes@google.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: azurIt <azurit@pobox.sk>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'mm/memcontrol.c')
| -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 f45e21ab9cea..c0607d27ce87 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -2613,7 +2613,7 @@ static int mem_cgroup_do_charge(struct mem_cgroup *memcg, gfp_t gfp_mask, return CHARGE_RETRY; /* If we don't need to call oom-killer at el, return immediately */ - if (!oom_check) + if (!oom_check || !current->memcg_oom.may_oom) return CHARGE_NOMEM; /* check OOM */ if (!mem_cgroup_handle_oom(mem_over_limit, gfp_mask, get_order(csize))) |