[RFC PATCH 0/4] Automatic NUMA balancing and PROT_NONE handling followup v2r8

From: Mel Gorman <mgorman@suse.de>
To: Dave Chinner <david@fromorbit.com>
Cc: linuxppc-dev@lists.ozlabs.org,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	xfs@oss.sgi.com, Linux-MM <linux-mm@kvack.org>,
	Aneesh Kumar <aneesh.kumar@linux.vnet.ibm.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Ingo Molnar <mingo@kernel.org>, Mel Gorman <mgorman@suse.de>
Subject: [RFC PATCH 0/4] Automatic NUMA balancing and PROT_NONE handling followup v2r8
Date: Sat,  7 Mar 2015 15:20:47 +0000	[thread overview]
Message-ID: <1425741651-29152-1-git-send-email-mgorman@suse.de> (raw)

Dave Chinner reported a problem due to excessive NUMA balancing activity
and bisected it. The first patch in this series corrects a major problem
that is unlikely to affect Dave but is still serious. Patch 2 is a minor
cleanup that was spotted while looking at scan rate control. Patch 3 is
minor and unlikely to make a difference but is still an inconsistentcy
between base and THP handling. Patch 4 is the important one, it slows
PTE scan updates if migrations are failing or throttled. Details of the
performance impact on local tests is included in the patch.

 include/linux/migrate.h |  5 -----
 include/linux/sched.h   |  9 +++++----
 kernel/sched/fair.c     |  8 ++++++--
 mm/huge_memory.c        |  8 +++++---
 mm/memory.c             |  3 ++-
 mm/migrate.c            | 20 --------------------
 6 files changed, 18 insertions(+), 35 deletions(-)

-- 
2.1.2