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| author | Mel Gorman <mel@csn.ul.ie> | 2008-04-28 02:12:18 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-28 08:58:19 -0700 |
| commit | 19770b32609b6bf97a3dece2529089494cbfc549 (patch) | |
| tree | 3b5922d1b20aabdf929bde9309f323841717747a /include/linux/gfp.h | |
| parent | dd1a239f6f2d4d3eedd318583ec319aa145b324c (diff) | |
| download | kernel_samsung_crespo-19770b32609b6bf97a3dece2529089494cbfc549.zip kernel_samsung_crespo-19770b32609b6bf97a3dece2529089494cbfc549.tar.gz kernel_samsung_crespo-19770b32609b6bf97a3dece2529089494cbfc549.tar.bz2 | |
mm: filter based on a nodemask as well as a gfp_mask
The MPOL_BIND policy creates a zonelist that is used for allocations
controlled by that mempolicy. As the per-node zonelist is already being
filtered based on a zone id, this patch adds a version of __alloc_pages() that
takes a nodemask for further filtering. This eliminates the need for
MPOL_BIND to create a custom zonelist.
A positive benefit of this is that allocations using MPOL_BIND now use the
local node's distance-ordered zonelist instead of a custom node-id-ordered
zonelist. I.e., pages will be allocated from the closest allowed node with
available memory.
[Lee.Schermerhorn@hp.com: Mempolicy: update stale documentation and comments]
[Lee.Schermerhorn@hp.com: Mempolicy: make dequeue_huge_page_vma() obey MPOL_BIND nodemask]
[Lee.Schermerhorn@hp.com: Mempolicy: make dequeue_huge_page_vma() obey MPOL_BIND nodemask rework]
Signed-off-by: Mel Gorman <mel@csn.ul.ie>
Acked-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Lee Schermerhorn <lee.schermerhorn@hp.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Hugh Dickins <hugh@veritas.com>
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>
Diffstat (limited to 'include/linux/gfp.h')
| -rw-r--r-- | include/linux/gfp.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/gfp.h b/include/linux/gfp.h index e1c6064..898aa9d 100644 --- a/include/linux/gfp.h +++ b/include/linux/gfp.h @@ -182,6 +182,10 @@ static inline void arch_alloc_page(struct page *page, int order) { } extern struct page *__alloc_pages(gfp_t, unsigned int, struct zonelist *); +extern struct page * +__alloc_pages_nodemask(gfp_t, unsigned int, + struct zonelist *, nodemask_t *nodemask); + static inline struct page *alloc_pages_node(int nid, gfp_t gfp_mask, unsigned int order) { |