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Merge branch 'for-3.11-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup

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Pull cgroup fix from Tejun Heo:
 "A late fix for cgroup.

  This fixes a behavior regression visible to userland which was created
  by a commit merged during -rc1.  While the behavior change isn't too
  likely to be noticeable, the fix is relatively low risk and we'll need
  to backport it through -stable anyway if the bug gets released"

* 'for-3.11-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
  cpuset: fix a regression in validating config change
This commit is contained in:
Linus Torvalds 2013-08-23 10:58:50 -07:00
commit e2982a04ed
1 changed files with 9 additions and 5 deletions
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14
kernel/cpuset.c
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@ -475,13 +475,17 @@ static int validate_change(const struct cpuset *cur, const struct cpuset *trial)
/* /*
* Cpusets with tasks - existing or newly being attached - can't * Cpusets with tasks - existing or newly being attached - can't
* have empty cpus_allowed or mems_allowed. * be changed to have empty cpus_allowed or mems_allowed.
*/ */
ret = -ENOSPC; ret = -ENOSPC;
if ((cgroup_task_count(cur->css.cgroup) || cur->attach_in_progress) && if ((cgroup_task_count(cur->css.cgroup) || cur->attach_in_progress)) {
(cpumask_empty(trial->cpus_allowed) && if (!cpumask_empty(cur->cpus_allowed) &&
nodes_empty(trial->mems_allowed))) cpumask_empty(trial->cpus_allowed))
goto out; goto out;
if (!nodes_empty(cur->mems_allowed) &&
nodes_empty(trial->mems_allowed))
goto out;
}
ret = 0; ret = 0;
out: out: