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Date: Wed, 14 Apr 2010 00:25:00 +0900 From: Minchan Kim <minchan.kim@...il.com> To: Andrew Morton <akpm@...ux-foundation.org> Cc: Mel Gorman <mel@....ul.ie>, KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>, Bob Liu <lliubbo@...il.com>, linux-kernel@...r.kernel.org, linux-mm@...ck.org, Minchan Kim <minchan.kim@...il.com>, Christoph Lameter <cl@...ux-foundation.org> Subject: [PATCH 3/6] change alloc function in alloc_slab_page alloc_slab_page never calls alloc_pages_node with -1. It means node's validity check is unnecessary. So we can use alloc_pages_exact_node instead of alloc_pages_node. It could avoid comparison and branch as 6484eb3e2a81807722 tried. Cc: Christoph Lameter <cl@...ux-foundation.org> Signed-off-by: Minchan Kim <minchan.kim@...il.com> --- mm/slub.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/mm/slub.c b/mm/slub.c index b364844..9984165 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -1084,7 +1084,7 @@ static inline struct page *alloc_slab_page(gfp_t flags, int node, if (node == -1) return alloc_pages(flags, order); else - return alloc_pages_node(node, flags, order); + return alloc_pages_exact_node(node, flags, order); } static struct page *allocate_slab(struct kmem_cache *s, gfp_t flags, int node) -- 1.7.0.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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