tree ba034e2b8bff6b7f3b62a826a0106dc0e1391b46
parent 7460db567bbca76bf087d1694d792a1a96bdaa26
author KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> 1233267913 -0800
committer Linus Torvalds <torvalds@linux-foundation.org> 1233281083 -0800

memcg: fix refcnt handling at swapoff

Now, at swapoff, even while try_charge() fails, commit is executed.  This
is a bug which turns the refcnt of cgroup_subsys_state negative.

Reported-by: Li Zefan <lizf@cn.fujitsu.com>
Tested-by: Li Zefan <lizf@cn.fujitsu.com>
Tested-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Reviewed-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>