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cpuset: Fix incorrect memory_pressure control file mapping 

The memory_pressure control file was incorrectly set up without
a private value (0, by default). As a result, this control
file was treated like memory_migrate on read. By adding back the
FILE_MEMORY_PRESSURE private value, the correct memory pressure value
will be returned.

Signed-off-by: Waiman Long <longman@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Fixes: 7dbdb199d3 ("cgroup: replace cftype->mode with CFTYPE_WORLD_WRITABLE")
Cc: stable@vger.kernel.org # v4.4+
This commit is contained in:
Waiman Long 2017-08-24 12:04:29 -04:00 committed by Tejun Heo
parent 3c74541777
commit 1c08c22c87
1 changed files with 1 additions and 0 deletions
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kernel/cgroup/cpuset.c
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@ -1891,6 +1891,7 @@ static struct cftype files[] = {
{
.name = "memory_pressure",
.read_u64 = cpuset_read_u64,
.private = FILE_MEMORY_PRESSURE,
},
{