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| author | Mel Gorman <mgorman@suse.de> | 2012-11-12 10:06:20 +0100 |
|---|---|---|
| committer | Mel Gorman <mgorman@suse.de> | 2012-12-11 15:42:52 +0100 |
| commit | 57e0a0309160b1b4ebde9f3c6a867cd96ac368bf (patch) | |
| tree | 085278ae65303221b638bf4d5063be0d41d35098 /mm/page_alloc.c | |
| parent | sched: numa: Slowly increase the scanning period as NUMA faults are handled (diff) | |
| download | linux-57e0a0309160b1b4ebde9f3c6a867cd96ac368bf.tar.xz linux-57e0a0309160b1b4ebde9f3c6a867cd96ac368bf.zip | |
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/page_alloc.c')
| -rw-r--r-- | mm/page_alloc.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index ef025e20dbee..73f226a1206e 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 |