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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>
This commit is contained in:
Li Zefan 2011-03-04 17:36:21 -08:00 committed by Linus Torvalds
parent 2ec38a0359
commit b75f38d659
1 changed files with 5 additions and 2 deletions
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7
kernel/cpuset.c
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@ -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;
}