From: Christoph Lameter <clameter@sgi.com>
Date: Tue, 5 Feb 2008 06:28:35 +0000 (-0800)
Subject: VM: allow get_page_unless_zero on compound pages
X-Git-Tag: v2.6.25-rc1~981
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=aec2c3ed01ed54d0cdf7f6b7c4be217c045ac5ea;p=pandora-kernel.git

VM: allow get_page_unless_zero on compound pages

Both slab defrag and the large blocksize patches need to ability to take
refcounts on compound pages.  May be useful in other places as well.

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