Re: [PATCH 03/20] Do not check NUMA node ID when the caller knows the node is valid

Mel Gorman
2009-02-23T16:24:44Z

On Mon, Feb 23, 2009 at 10:01:35AM -0500, Christoph Lameter wrote:
> On Sun, 22 Feb 2009, Mel Gorman wrote:
>
> > diff --git a/mm/vmalloc.c b/mm/vmalloc.c
> > index 75f49d3..6566c9e 100644
> > --- a/mm/vmalloc.c
> > +++ b/mm/vmalloc.c
> > @@ -1318,11 +1318,7 @@ static void *__vmalloc_area_node(struct vm_struct *area, gfp_t gfp_mask,
> > for (i = 0; i < area->nr_pages; i++) {
> > struct page *page;
> >
> > - if (node < 0)
> > - page = alloc_page(gfp_mask);
> > - else
> > - page = alloc_pages_node(node, gfp_mask, 0);
> > -
> > + page = alloc_pages_node(node, gfp_mask, 0);
> > if (unlikely(!page)) {
> > /* Successfully allocated i pages, free them in __vunmap() */
> > area->nr_pages = i;
> >
>
> That wont work. alloc_pages() obeys memory policies. alloc_pages_node()
> does not.
>

Correct, I failed to take policies into account. The same comment
applied for the slub modification. I've reverted this part. Good spot.

--
Mel Gorman
Part-time Phd Student Linux Technology Center
University of Limerick IBM Dublin Software Lab