cpuset: fix the return value of cpuset_write_u64()
Writing to this file always returns -ENODEV: # echo 1 > cpuset.memory_pressure_enabled -bash: echo: write error: No such device Signed-off-by: Li Zefan <lizefan@huawei.com> Cc: <stable@vger.kernel.org> # 3.9+ Signed-off-by: Tejun Heo <tj@kernel.org>
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@ -1608,11 +1608,13 @@ static int cpuset_write_u64(struct cgroup *cgrp, struct cftype *cft, u64 val)
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{
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struct cpuset *cs = cgroup_cs(cgrp);
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cpuset_filetype_t type = cft->private;
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int retval = -ENODEV;
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int retval = 0;
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mutex_lock(&cpuset_mutex);
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if (!is_cpuset_online(cs))
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if (!is_cpuset_online(cs)) {
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retval = -ENODEV;
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goto out_unlock;
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}
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switch (type) {
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case FILE_CPU_EXCLUSIVE:
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