Messages in this thread | | | Date | Tue, 13 Apr 2010 17:02:28 +0100 | From | Mel Gorman <> | Subject | Re: [PATCH 5/6] change alloc function in __vmalloc_area_node |
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On Wed, Apr 14, 2010 at 12:25:02AM +0900, Minchan Kim wrote: > __vmalloc_area_node never pass -1 to alloc_pages_node. > 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. >
Seems fine, the check for node id being negative has already been made.
Reviewed-by: Mel Gorman <mel@csn.ul.ie>
> Cc: Nick Piggin <npiggin@suse.de> > Signed-off-by: Minchan Kim <minchan.kim@gmail.com> > --- > mm/vmalloc.c | 2 +- > 1 files changed, 1 insertions(+), 1 deletions(-) > > diff --git a/mm/vmalloc.c b/mm/vmalloc.c > index ae00746..7abf423 100644 > --- a/mm/vmalloc.c > +++ b/mm/vmalloc.c > @@ -1499,7 +1499,7 @@ static void *__vmalloc_area_node(struct vm_struct *area, gfp_t gfp_mask, > if (node < 0) > page = alloc_page(gfp_mask); > else > - page = alloc_pages_node(node, gfp_mask, 0); > + page = alloc_pages_exact_node(node, gfp_mask, 0); > > if (unlikely(!page)) { > /* Successfully allocated i pages, free them in __vunmap() */ > -- > 1.7.0.5 >
-- Mel Gorman Part-time Phd Student Linux Technology Center University of Limerick IBM Dublin Software Lab
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