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authorLi Zefan <lizf@cn.fujitsu.com>2011-03-04 17:36:21 -0800
committerGreg Kroah-Hartman <gregkh@suse.de>2011-03-14 14:29:52 -0700
commitcf666a4bfee9de4378566819081e9451a0fe6f1f (patch)
treeafbddcd4ffcf7eefe7a21f051348065905c7a1ac /kernel
parent0533a1fed29c6b890599647d747439f2c2af1415 (diff)
cpuset: add a missing unlock in cpuset_write_resmask()
commit b75f38d659e6fc747eda64cb72f3920e29dd44a4 upstream. Don't forget to release cgroup_mutex if alloc_trial_cpuset() fails. [akpm@linux-foundation.org: avoid multiple return points] Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Cc: Paul Menage <menage@google.com> Acked-by: David Rientjes <rientjes@google.com> Cc: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/cpuset.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/kernel/cpuset.c b/kernel/cpuset.c
index b120fd01a353..d091ed39a404 100644
--- a/kernel/cpuset.c
+++ b/kernel/cpuset.c
@@ -1514,8 +1514,10 @@ static int cpuset_write_resmask(struct cgroup *cgrp, struct cftype *cft,
return -ENODEV;
trialcs = alloc_trial_cpuset(cs);
- if (!trialcs)
- return -ENOMEM;
+ if (!trialcs) {
+ retval = -ENOMEM;
+ goto out;
+ }
switch (cft->private) {
case FILE_CPULIST:
@@ -1530,6 +1532,7 @@ static int cpuset_write_resmask(struct cgroup *cgrp, struct cftype *cft,
}
free_trial_cpuset(trialcs);
+out:
cgroup_unlock();
return retval;
}