From 19770b32609b6bf97a3dece2529089494cbfc549 Mon Sep 17 00:00:00 2001 From: Mel Gorman Date: Mon, 28 Apr 2008 02:12:18 -0700 Subject: 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 Acked-by: Christoph Lameter Signed-off-by: Lee Schermerhorn Cc: KAMEZAWA Hiroyuki Cc: Mel Gorman Cc: Hugh Dickins Cc: Nick Piggin Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/cpuset.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/linux/cpuset.h') diff --git a/include/linux/cpuset.h b/include/linux/cpuset.h index 726761e24003..038578362b47 100644 --- a/include/linux/cpuset.h +++ b/include/linux/cpuset.h @@ -26,7 +26,7 @@ extern nodemask_t cpuset_mems_allowed(struct task_struct *p); #define cpuset_current_mems_allowed (current->mems_allowed) void cpuset_init_current_mems_allowed(void); void cpuset_update_task_memory_state(void); -int cpuset_zonelist_valid_mems_allowed(struct zonelist *zl); +int cpuset_nodemask_valid_mems_allowed(nodemask_t *nodemask); extern int __cpuset_zone_allowed_softwall(struct zone *z, gfp_t gfp_mask); extern int __cpuset_zone_allowed_hardwall(struct zone *z, gfp_t gfp_mask); @@ -103,7 +103,7 @@ static inline nodemask_t cpuset_mems_allowed(struct task_struct *p) static inline void cpuset_init_current_mems_allowed(void) {} static inline void cpuset_update_task_memory_state(void) {} -static inline int cpuset_zonelist_valid_mems_allowed(struct zonelist *zl) +static inline int cpuset_nodemask_valid_mems_allowed(nodemask_t *nodemask) { return 1; } -- cgit