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| author | Olof Johansson <olof@lixom.net> | 2011-12-15 22:02:34 -0800 |
|---|---|---|
| committer | Olof Johansson <olof@lixom.net> | 2011-12-15 22:02:34 -0800 |
| commit | 02735a29d8ce882ec698803f064e17888874780c (patch) | |
| tree | 6a4afa3bc8b6d4334df24910a56f77adf126b0c7 /mm/page_alloc.c | |
| parent | 8d685b7f4d9c9882442bf1b492558d5f17b694fa (diff) | |
| parent | 3d911ad22e8405c1a333a6812e405cb1a5ae9829 (diff) | |
| download | olio-linux-3.10-02735a29d8ce882ec698803f064e17888874780c.tar.xz olio-linux-3.10-02735a29d8ce882ec698803f064e17888874780c.zip | |
Merge branch 'at91/defconfig' into next/cleanup
Diffstat (limited to 'mm/page_alloc.c')
| -rw-r--r-- | mm/page_alloc.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 9dd443d89d8..2b8ba3aebf6 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -356,8 +356,8 @@ void prep_compound_page(struct page *page, unsigned long order) __SetPageHead(page); for (i = 1; i < nr_pages; i++) { struct page *p = page + i; - __SetPageTail(p); + set_page_count(p, 0); p->first_page = page; } } @@ -3377,9 +3377,15 @@ static void setup_zone_migrate_reserve(struct zone *zone) unsigned long block_migratetype; int reserve; - /* Get the start pfn, end pfn and the number of blocks to reserve */ + /* + * Get the start pfn, end pfn and the number of blocks to reserve + * We have to be careful to be aligned to pageblock_nr_pages to + * make sure that we always check pfn_valid for the first page in + * the block. + */ start_pfn = zone->zone_start_pfn; end_pfn = start_pfn + zone->spanned_pages; + start_pfn = roundup(start_pfn, pageblock_nr_pages); reserve = roundup(min_wmark_pages(zone), pageblock_nr_pages) >> pageblock_order; |