aboutsummaryrefslogtreecommitdiffstats
path: root/include/linux/gfp.h
diff options
context:
space:
mode:
authorMel Gorman <mel@csn.ul.ie>2008-04-28 05:12:18 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2008-04-28 11:58:19 -0400
commit19770b32609b6bf97a3dece2529089494cbfc549 (patch)
tree3b5922d1b20aabdf929bde9309f323841717747a /include/linux/gfp.h
parentdd1a239f6f2d4d3eedd318583ec319aa145b324c (diff)
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.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/gfp.h b/include/linux/gfp.h
index e1c6064cb6c7..898aa9d5b6c2 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) { }
182 182
183extern struct page *__alloc_pages(gfp_t, unsigned int, struct zonelist *); 183extern struct page *__alloc_pages(gfp_t, unsigned int, struct zonelist *);
184 184
185extern struct page *
186__alloc_pages_nodemask(gfp_t, unsigned int,
187 struct zonelist *, nodemask_t *nodemask);
188
185static inline struct page *alloc_pages_node(int nid, gfp_t gfp_mask, 189static inline struct page *alloc_pages_node(int nid, gfp_t gfp_mask,
186 unsigned int order) 190 unsigned int order)
187{ 191{