cgroup: use read lock to guard find_existing_css_set()
authorLi Zefan <lizf@cn.fujitsu.com>
Fri, 25 Jul 2008 08:46:54 +0000 (01:46 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Fri, 25 Jul 2008 17:53:35 +0000 (10:53 -0700)
commit7e9abd89cbdf9b73d327d8173343abce9022609b
tree7e738e46ba5e384fc6bc984196ed2d09a0ea8102
parent9d96d82da437ed5f2053821779ed5d7797ed1f81
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>
kernel/cgroup.c