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| author | KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> | 2010-06-29 15:05:18 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-06-29 15:29:30 -0700 |
| commit | 4d845ebf4cf9e985b1704b1f08b37f744b4ede13 (patch) | |
| tree | d137f9220a1572c2e3b53ce38950314f5aeb82e4 /mm/rmap.c | |
| parent | 3c26c9d9597f982973b9b3a32364230096ab0d78 (diff) | |
| download | kernel_samsung_smdk4412-4d845ebf4cf9e985b1704b1f08b37f744b4ede13.zip kernel_samsung_smdk4412-4d845ebf4cf9e985b1704b1f08b37f744b4ede13.tar.gz kernel_samsung_smdk4412-4d845ebf4cf9e985b1704b1f08b37f744b4ede13.tar.bz2 | |
memcg: fix wake up in oom wait queue
OOM-waitqueue should be waken up when oom_disable is canceled. This is a
fix for 3c11ecf448eff8f1 ("memcg: oom kill disable and oom status").
How to test:
Create a cgroup A...
1. set memory.limit and memory.memsw.limit to be small value
2. echo 1 > /cgroup/A/memory.oom_control, this disables oom-kill.
3. run a program which must cause OOM.
A program executed in 3 will sleep by oom_waiqueue in memcg. Then, how to
wake it up is problem.
1. echo 0 > /cgroup/A/memory.oom_control (enable OOM-killer)
2. echo big mem > /cgroup/A/memory.memsw.limit_in_bytes(allow more swap)
etc..
Without the patch, a task in slept can not be waken up.
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Cc: Balbir Singh <balbir@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/rmap.c')
0 files changed, 0 insertions, 0 deletions