From: Christoph Lameter <clameter@sgi.com>
Date: Thu, 19 Jan 2006 01:42:30 +0000 (-0800)
Subject: [PATCH] Zone reclaim: resurrect may_swap
X-Git-Tag: v2.6.16-rc2~342
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f1fd1067ece574ab56e4a70878b9a5a1ed4c3c42;p=pandora-kernel.git

[PATCH] Zone reclaim: resurrect may_swap

Zone reclaim has a huge impact on NUMA performance (f.e.  our maximum
throughput with XFS is raised from 4GB to 6GB/sec / page cache contamination
of numa nodes destroys locality if one just does a large copy operation which
results in performance dropping for good until reboot).

This patch:

Resurrect may_swap in struct scan_control

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

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