From: Brice Goglin <Brice.Goglin@inria.fr>
Date: Tue, 6 Jan 2009 22:38:57 +0000 (-0800)
Subject: mm: rework do_pages_move() to work on page_sized chunks
X-Git-Tag: v2.6.29-rc1~487
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3140a2273009c01c27d316f35ab76a37e105fdd8;p=pandora-kernel.git

mm: rework do_pages_move() to work on page_sized chunks

Rework do_pages_move() to work by page-sized chunks of struct page_to_node
that are passed to do_move_page_to_node_array().  We now only have to
allocate a single page instead a possibly very large vmalloc area to store
all page_to_node entries.

As a result, new_page_node() will now have a very small lookup, hidding
much of the overall sys_move_pages() overhead.

Signed-off-by: Brice Goglin <Brice.Goglin@inria.fr>
Signed-off-by: Nathalie Furmento <Nathalie.Furmento@labri.fr>
Acked-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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