cgroups: use hierarchy mutex in creation failure path
authorKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Thu, 29 Jan 2009 22:25:10 +0000 (14:25 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Fri, 30 Jan 2009 02:04:43 +0000 (18:04 -0800)
Now, cgrp->sibling is handled under hierarchy mutex.
error route should do so, too.

Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Li Zefan <lizf@cn.fujitsu.com>
Acked-by Paul Menage <menage@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

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