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authorKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>2009-01-29 14:25:10 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-01-29 18:04:43 -0800
commitbaef99a08a2e23d9386b47e53fa5f0d44fc98f66 (patch)
tree0171abae8bd05710c83444b8a236fc6ffbcac71c
parent9e9e3cbc62da43c66e894d5a61fa08b427e25202 (diff)
cgroups: use hierarchy mutex in creation failure path
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>
-rw-r--r--kernel/cgroup.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index c29831076e7..2ae7cb47dbf 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -2434,7 +2434,9 @@ static long cgroup_create(struct cgroup *parent, struct dentry *dentry,
err_remove:
+ cgroup_lock_hierarchy(root);
list_del(&cgrp->sibling);
+ cgroup_unlock_hierarchy(root);
root->number_of_cgroups--;
err_destroy: