From: Mel Gorman <mel@csn.ul.ie>
Date: Tue, 16 Oct 2007 08:25:50 +0000 (-0700)
Subject: Drain per-cpu lists when high-order allocations fail
X-Git-Tag: v2.6.24-rc1~1139
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e2c55dc87f4a398b9c4dcc702dbc23a07fe14e23;p=pandora-kernel.git

Drain per-cpu lists when high-order allocations fail

Per-cpu pages can accidentally cause fragmentation because they are free, but
pinned pages in an otherwise contiguous block.  When this patch is applied,
the per-cpu caches are drained after the direct-reclaim is entered if the
requested order is greater than 0.  It simply reuses the code used by suspend
and hotplug.

Signed-off-by: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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