Patch "cpuset: Fix incorrect memory_pressure control file mapping" has been added to the 4.12-stable tree

Patch "cpuset: Fix incorrect memory_pressure control file mapping" has been added to the 4.12-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    cpuset: Fix incorrect memory_pressure control file mapping

to the 4.12-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     cpuset-fix-incorrect-memory_pressure-control-file-mapping.patch
and it can be found in the queue-4.12 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 1c08c22c874ac88799cab1f78c40f46110274915 Mon Sep 17 00:00:00 2001
From: Waiman Long <longman@redhat.com>
Date: Thu, 24 Aug 2017 12:04:29 -0400
Subject: cpuset: Fix incorrect memory_pressure control file mapping

From: Waiman Long <longman@redhat.com>

commit 1c08c22c874ac88799cab1f78c40f46110274915 upstream.

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: 7dbdb199d3bf ("cgroup: replace cftype->mode with CFTYPE_WORLD_WRITABLE")
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 kernel/cgroup/cpuset.c |    1 +
 1 file changed, 1 insertion(+)

--- a/kernel/cgroup/cpuset.c
+++ b/kernel/cgroup/cpuset.c
@@ -1907,6 +1907,7 @@ static struct cftype files[] = {
 	{
 		.name = "memory_pressure",
 		.read_u64 = cpuset_read_u64,
+		.private = FILE_MEMORY_PRESSURE,
 	},
 
 	{


Patches currently in stable-queue which might be from longman@redhat.com are

queue-4.12/cpuset-fix-incorrect-memory_pressure-control-file-mapping.patch