tree 7e738e46ba5e384fc6bc984196ed2d09a0ea8102
parent 9d96d82da437ed5f2053821779ed5d7797ed1f81
author Li Zefan <lizf@cn.fujitsu.com> 1216975614 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1217008415 -0700

cgroup: use read lock to guard find_existing_css_set()

The function does not modify anything (except the temporary css template), so
it's sufficient to hold read lock.

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Acked-by: Paul Menage <menage@google.com>
Cc: Balbir Singh <balbir@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>