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authorMel Gorman <mgorman@suse.de>2012-11-12 09:06:20 +0000
committerMel Gorman <mgorman@suse.de>2012-12-11 14:42:52 +0000
commit57e0a0309160b1b4ebde9f3c6a867cd96ac368bf (patch)
tree085278ae65303221b638bf4d5063be0d41d35098 /mm
parentfb003b80daa0dead5b87f4e2e4fb8da68b110ff2 (diff)
downloadop-kernel-dev-57e0a0309160b1b4ebde9f3c6a867cd96ac368bf.zip
op-kernel-dev-57e0a0309160b1b4ebde9f3c6a867cd96ac368bf.tar.gz
mm: numa: Introduce last_nid to the page frame
This patch introduces a last_nid field to the page struct. This is used to build a two-stage filter in the next patch that is aimed at mitigating a problem whereby pages migrate to the wrong node when referenced by a process that was running off its home node. Signed-off-by: Mel Gorman <mgorman@suse.de>
Diffstat (limited to 'mm')
-rw-r--r--mm/page_alloc.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index ef025e2..73f226a 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -608,6 +608,7 @@ static inline int free_pages_check(struct page *page)
bad_page(page);
return 1;
}
+ reset_page_last_nid(page);
if (page->flags & PAGE_FLAGS_CHECK_AT_PREP)
page->flags &= ~PAGE_FLAGS_CHECK_AT_PREP;
return 0;
@@ -3826,6 +3827,7 @@ void __meminit memmap_init_zone(unsigned long size, int nid, unsigned long zone,
mminit_verify_page_links(page, zone, nid, pfn);
init_page_count(page);
reset_page_mapcount(page);
+ reset_page_last_nid(page);
SetPageReserved(page);
/*
* Mark the block movable so that blocks are reserved for
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