Paul Menage 839ec5452e cgroup: fix root_count when mount fails due to busy subsystem
root_count was being incremented in cgroup_get_sb() after all error
checking was complete, but decremented in cgroup_kill_sb(), which can be
called on a superblock that we gave up on due to an error.  This patch
changes cgroup_kill_sb() to only decrement root_count if the root was
previously linked into the list of roots.

Signed-off-by: Paul Menage <menage@google.com>
Tested-by: Serge Hallyn <serue@us.ibm.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-29 18:04:45 -08:00
..
2009-01-12 16:39:58 -08:00
2009-01-15 16:39:37 -08:00
2008-10-16 11:21:30 -07:00
2008-07-28 14:37:38 +02:00
2007-07-16 09:05:50 -07:00
2009-01-06 15:59:27 -08:00
2008-12-10 08:01:54 -08:00
2008-08-13 12:55:10 +02:00
2008-10-20 15:43:10 +02:00
2009-01-08 08:31:02 -08:00
2009-01-08 08:31:12 -08:00
2008-09-02 19:21:40 -07:00
2009-01-06 11:07:15 +01:00
2009-01-15 21:07:57 +01:00
2008-11-05 10:30:14 +01:00
2007-07-16 09:05:50 -07:00
2008-02-06 10:41:02 -08:00
2008-10-16 11:21:47 -07:00
2008-10-16 11:21:31 -07:00