Bug 679025

Summary:	memcg: upstream backport of various race condition fixes
Product:	Red Hat Enterprise Linux 6	Reporter:	Johannes Weiner <jweiner>
Component:	kernel	Assignee:	Johannes Weiner <jweiner>
Status:	CLOSED ERRATA	QA Contact:	Caspar Zhang <czhang>
Severity:	high	Docs Contact:
Priority:	unspecified
Version:	6.0	CC:	czhang, lwang, mzywusko, qcai
Target Milestone:	rc
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	kernel-2.6.32-121.el6	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2011-05-19 12:43:42 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:

Description Johannes Weiner 2011-02-21 10:29:04 UTC

Memory control groups have various race conditions that have been fixed upstream in the following commits:

8725d54 memcg: fix race in file_mapped accounting
0c270f8 memcg: fix race in file_mapped accouting flag management
713735b memcg: correctly order reading PCG_USED and pc->mem_cgroup
52dbb90 memcg: fix race at move_parent around compound_order()

Comment 1 RHEL Program Management 2011-03-01 21:39:57 UTC

This request was evaluated by Red Hat Product Management for inclusion
in a Red Hat Enterprise Linux maintenance release. Product Management has 
requested further review of this request by Red Hat Engineering, for potential
inclusion in a Red Hat Enterprise Linux Update release for currently deployed 
products. This request is not yet committed for inclusion in an Update release.

Comment 2 Aristeu Rozanski 2011-03-10 17:57:45 UTC

Patch(es) available on kernel-2.6.32-121.el6

Comment 7 errata-xmlrpc 2011-05-19 12:43:42 UTC

An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHSA-2011-0542.html