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| author | David Rientjes <rientjes@google.com> | 2010-05-26 23:42:41 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-05-27 18:12:43 +0200 |
| commit | df64f81bb1e01cbef967a96642dacf208acb7e72 (patch) | |
| tree | accb54ac130b2ac52b3d8644cb6585cf9730975c | |
| parent | memcg: update documentation (diff) | |
| download | linux-df64f81bb1e01cbef967a96642dacf208acb7e72.tar.xz linux-df64f81bb1e01cbef967a96642dacf208acb7e72.zip | |
memcg: make oom killer a no-op when no killable task can be found
It's pointless to try to kill current if select_bad_process() did not find
an eligible task to kill in mem_cgroup_out_of_memory() since it's
guaranteed that current is a member of the memcg that is oom and it is, by
definition, unkillable.
Signed-off-by: David Rientjes <rientjes@google.com>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Cc: Li Zefan <lizf@cn.fujitsu.com>
Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | mm/oom_kill.c | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/mm/oom_kill.c b/mm/oom_kill.c index b68e802a7a7d..709aedfaa014 100644 --- a/mm/oom_kill.c +++ b/mm/oom_kill.c @@ -479,12 +479,9 @@ void mem_cgroup_out_of_memory(struct mem_cgroup *mem, gfp_t gfp_mask) read_lock(&tasklist_lock); retry: p = select_bad_process(&points, mem); - if (PTR_ERR(p) == -1UL) + if (!p || PTR_ERR(p) == -1UL) goto out; - if (!p) - p = current; - if (oom_kill_process(p, gfp_mask, 0, points, mem, "Memory cgroup out of memory")) goto retry; |