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authorKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>2009-03-31 18:23:31 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2009-04-01 11:59:15 -0400
commit327c0e968645f2601a43f5ea7c19c7b3a5fa0a34 (patch)
treeacc6789c120a6d5000ceebf51e690d14c6cfcacb /include/linux/swap.h
parent2678958e1225f350806d90f211a3b475f64aee80 (diff)
vmscan: fix it to take care of nodemask
try_to_free_pages() is used for the direct reclaim of up to SWAP_CLUSTER_MAX pages when watermarks are low. The caller to alloc_pages_nodemask() can specify a nodemask of nodes that are allowed to be used but this is not passed to try_to_free_pages(). This can lead to unnecessary reclaim of pages that are unusable by the caller and int the worst case lead to allocation failure as progress was not been make where it is needed. This patch passes the nodemask used for alloc_pages_nodemask() to try_to_free_pages(). Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Acked-by: Mel Gorman <mel@csn.ul.ie> Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Rik van Riel <riel@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/swap.h')
-rw-r--r--include/linux/swap.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/swap.h b/include/linux/swap.h
index d30215578877..b8b0c4ce83e6 100644
--- a/include/linux/swap.h
+++ b/include/linux/swap.h
@@ -212,7 +212,7 @@ static inline void lru_cache_add_active_file(struct page *page)
212 212
213/* linux/mm/vmscan.c */ 213/* linux/mm/vmscan.c */
214extern unsigned long try_to_free_pages(struct zonelist *zonelist, int order, 214extern unsigned long try_to_free_pages(struct zonelist *zonelist, int order,
215 gfp_t gfp_mask); 215 gfp_t gfp_mask, nodemask_t *mask);
216extern unsigned long try_to_free_mem_cgroup_pages(struct mem_cgroup *mem, 216extern unsigned long try_to_free_mem_cgroup_pages(struct mem_cgroup *mem,
217 gfp_t gfp_mask, bool noswap, 217 gfp_t gfp_mask, bool noswap,
218 unsigned int swappiness); 218 unsigned int swappiness);