slub: Use alloc_pages_exact_node() for page allocation
authorMinchan Kim <minchan.kim@gmail.com>
Wed, 14 Apr 2010 14:58:36 +0000 (23:58 +0900)
committerPekka Enberg <penberg@cs.helsinki.fi>
Sat, 22 May 2010 07:57:31 +0000 (10:57 +0300)
commit6b65aaf3027c4e02b42aaefd900aa79136a30681
treea5a9b5cb55af436f9216729b734c92ee919a66d1
parentd3e14aa336b37df76ae875fa051dfdb0e765ddf9
slub: Use alloc_pages_exact_node() for page allocation

The alloc_slab_page() in SLUB uses alloc_pages() if node is '-1'.  This means
that node validity check in alloc_pages_node is unnecessary and we can use
alloc_pages_exact_node() to avoid comparison and branch as commit
6484eb3e2a81807722 ("page allocator: do not check NUMA node ID when the caller
knows the node is valid") did for the page allocator.

Cc: Christoph Lameter <cl@linux-foundation.org>
Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Reviewed-by: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: Minchan Kim <minchan.kim@gmail.com>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
mm/slub.c