Messages in this thread Patch in this message | | | Date | Tue, 13 Aug 2013 10:05:59 +0800 | From | Li Zefan <> | Subject | [PATCH][3.11] cpuset: fix the return value of cpuset_write_u64() |
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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+ --- kernel/cpuset.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/kernel/cpuset.c b/kernel/cpuset.c index 1b9c315..c602ab8 100644 --- a/kernel/cpuset.c +++ b/kernel/cpuset.c @@ -1607,11 +1607,13 @@ static int cpuset_write_u64(struct cgroup *cgrp, struct cftype *cft, u64 val) { struct cpuset *cs = cgroup_cs(cgrp); cpuset_filetype_t type = cft->private; - int retval = -ENODEV; + int retval = 0; mutex_lock(&cpuset_mutex); - if (!is_cpuset_online(cs)) + if (!is_cpuset_online(cs)) { + retval = -ENODEV; goto out_unlock; + } switch (type) { case FILE_CPU_EXCLUSIVE: -- 1.8.0.2
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