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authorLi Zefan <lizf@cn.fujitsu.com>2011-03-05 04:36:21 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2011-03-05 04:53:38 +0300
commitb75f38d659e6fc747eda64cb72f3920e29dd44a4 (patch)
tree308edc066f8c26991323526d499eefa8c773f267
parent2ec38a0359e227c01080dcd670a0368c61ccd9ce (diff)
downloadlinux-b75f38d659e6fc747eda64cb72f3920e29dd44a4.tar.xz
cpuset: add a missing unlock in cpuset_write_resmask()
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> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--kernel/cpuset.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/kernel/cpuset.c b/kernel/cpuset.c
index 4349935c2ad8..e92e98189032 100644
--- a/kernel/cpuset.c
+++ b/kernel/cpuset.c
@@ -1575,8 +1575,10 @@ 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:
@@ -1591,6 +1593,7 @@ static int cpuset_write_resmask(struct cgroup *cgrp, struct cftype *cft,
}
free_trial_cpuset(trialcs);
+out:
cgroup_unlock();
return retval;
}