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| author | David S. Miller <davem@davemloft.net> | 2008-11-06 22:43:03 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-11-06 22:43:03 -0800 |
| commit | 9eeda9abd1faf489f3df9a1f557975f4c8650363 (patch) | |
| tree | 3e0a58e25b776cfbee193195460324dccb1886c7 /mm/page_alloc.c | |
| parent | 61c9eaf90081cbe6dc4f389e0056bff76eca19ec (diff) | |
| parent | 4bab0ea1d42dd1927af9df6fbf0003fc00617c50 (diff) | |
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
drivers/net/wireless/ath5k/base.c
net/8021q/vlan_core.c
Diffstat (limited to 'mm/page_alloc.c')
| -rw-r--r-- | mm/page_alloc.c | 28 |
1 files changed, 21 insertions, 7 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index d0a240fbb8bf..54069e64e3a8 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -263,24 +263,39 @@ void prep_compound_page(struct page *page, unsigned long order) { int i; int nr_pages = 1 << order; + + set_compound_page_dtor(page, free_compound_page); + set_compound_order(page, order); + __SetPageHead(page); + for (i = 1; i < nr_pages; i++) { + struct page *p = page + i; + + __SetPageTail(p); + p->first_page = page; + } +} + +#ifdef CONFIG_HUGETLBFS +void prep_compound_gigantic_page(struct page *page, unsigned long order) +{ + int i; + int nr_pages = 1 << order; struct page *p = page + 1; set_compound_page_dtor(page, free_compound_page); set_compound_order(page, order); __SetPageHead(page); - for (i = 1; i < nr_pages; i++, p++) { - if (unlikely((i & (MAX_ORDER_NR_PAGES - 1)) == 0)) - p = pfn_to_page(page_to_pfn(page) + i); + for (i = 1; i < nr_pages; i++, p = mem_map_next(p, page, i)) { __SetPageTail(p); p->first_page = page; } } +#endif static void destroy_compound_page(struct page *page, unsigned long order) { int i; int nr_pages = 1 << order; - struct page *p = page + 1; if (unlikely(compound_order(page) != order)) bad_page(page); @@ -288,9 +303,8 @@ static void destroy_compound_page(struct page *page, unsigned long order) if (unlikely(!PageHead(page))) bad_page(page); __ClearPageHead(page); - for (i = 1; i < nr_pages; i++, p++) { - if (unlikely((i & (MAX_ORDER_NR_PAGES - 1)) == 0)) - p = pfn_to_page(page_to_pfn(page) + i); + for (i = 1; i < nr_pages; i++) { + struct page *p = page + i; if (unlikely(!PageTail(p) | (p->first_page != page))) |