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Patch "cpuset: Fix incorrect memory_pressure control file mapping" has been added to the 4.9-stable tree

PATCH [email protected] 1 participant 1 message Sep 4, 2017 Stable branch

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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 4.9-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-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

Quoted 1 line

From 1c08c22c874ac88799cab1f78c40f46110274915 Mon Sep 17 00:00:00 2001

From: Waiman Long <[email protected]>
Date: Thu, 24 Aug 2017 12:04:29 -0400
Subject: cpuset: Fix incorrect memory_pressure control file mapping

From: Waiman Long <[email protected]>

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.

Fixes 7dbdb199d3bf ("cgroup: replace cftype->mode with CFTYPE_WORLD_WRITABLE")
---
 kernel/cpuset.c |    1 +
 1 file changed, 1 insertion(+)
kernel/cpuset.c +1 -0
@@ -1905,6 +1905,7 @@ 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 [email protected] are

queue-4.9/cpuset-fix-incorrect-memory_pressure-control-file-mapping.patch