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| author | Johannes Weiner <hannes@cmpxchg.org> | 2013-09-12 15:13:42 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-09-12 15:38:01 -0700 |
| commit | 519e52473ebe9db5cdef44670d5a97f1fd53d721 (patch) | |
| tree | 635fce64ff3658250745b9c8dfebd47e981a5b16 /include/linux/sched.h | |
| parent | 3a13c4d761b4b979ba8767f42345fed3274991b0 (diff) | |
| download | lwn-519e52473ebe9db5cdef44670d5a97f1fd53d721.tar.gz lwn-519e52473ebe9db5cdef44670d5a97f1fd53d721.zip | |
mm: memcg: enable memcg OOM killer only for user faults
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>
Diffstat (limited to 'include/linux/sched.h')
| -rw-r--r-- | include/linux/sched.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index 45f254dddafc..9ce1fa53031f 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1393,6 +1393,9 @@ struct task_struct { unsigned long memsw_nr_pages; /* uncharged mem+swap usage */ } memcg_batch; unsigned int memcg_kmem_skip_account; + struct memcg_oom_info { + unsigned int may_oom:1; + } memcg_oom; #endif #ifdef CONFIG_UPROBES struct uprobe_task *utask; |