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author | David S. Miller <davem@davemloft.net> | 2008-11-07 01:43:03 -0500 |
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committer | David S. Miller <davem@davemloft.net> | 2008-11-07 01:43:03 -0500 |
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) | |||
263 | { | 263 | { |
264 | int i; | 264 | int i; |
265 | int nr_pages = 1 << order; | 265 | int nr_pages = 1 << order; |
266 | |||
267 | set_compound_page_dtor(page, free_compound_page); | ||
268 | set_compound_order(page, order); | ||
269 | __SetPageHead(page); | ||
270 | for (i = 1; i < nr_pages; i++) { | ||
271 | struct page *p = page + i; | ||
272 | |||
273 | __SetPageTail(p); | ||
274 | p->first_page = page; | ||
275 | } | ||
276 | } | ||
277 | |||
278 | #ifdef CONFIG_HUGETLBFS | ||
279 | void prep_compound_gigantic_page(struct page *page, unsigned long order) | ||
280 | { | ||
281 | int i; | ||
282 | int nr_pages = 1 << order; | ||
266 | struct page *p = page + 1; | 283 | struct page *p = page + 1; |
267 | 284 | ||
268 | set_compound_page_dtor(page, free_compound_page); | 285 | set_compound_page_dtor(page, free_compound_page); |
269 | set_compound_order(page, order); | 286 | set_compound_order(page, order); |
270 | __SetPageHead(page); | 287 | __SetPageHead(page); |
271 | for (i = 1; i < nr_pages; i++, p++) { | 288 | for (i = 1; i < nr_pages; i++, p = mem_map_next(p, page, i)) { |
272 | if (unlikely((i & (MAX_ORDER_NR_PAGES - 1)) == 0)) | ||
273 | p = pfn_to_page(page_to_pfn(page) + i); | ||
274 | __SetPageTail(p); | 289 | __SetPageTail(p); |
275 | p->first_page = page; | 290 | p->first_page = page; |
276 | } | 291 | } |
277 | } | 292 | } |
293 | #endif | ||
278 | 294 | ||
279 | static void destroy_compound_page(struct page *page, unsigned long order) | 295 | static void destroy_compound_page(struct page *page, unsigned long order) |
280 | { | 296 | { |
281 | int i; | 297 | int i; |
282 | int nr_pages = 1 << order; | 298 | int nr_pages = 1 << order; |
283 | struct page *p = page + 1; | ||
284 | 299 | ||
285 | if (unlikely(compound_order(page) != order)) | 300 | if (unlikely(compound_order(page) != order)) |
286 | bad_page(page); | 301 | bad_page(page); |
@@ -288,9 +303,8 @@ static void destroy_compound_page(struct page *page, unsigned long order) | |||
288 | if (unlikely(!PageHead(page))) | 303 | if (unlikely(!PageHead(page))) |
289 | bad_page(page); | 304 | bad_page(page); |
290 | __ClearPageHead(page); | 305 | __ClearPageHead(page); |
291 | for (i = 1; i < nr_pages; i++, p++) { | 306 | for (i = 1; i < nr_pages; i++) { |
292 | if (unlikely((i & (MAX_ORDER_NR_PAGES - 1)) == 0)) | 307 | struct page *p = page + i; |
293 | p = pfn_to_page(page_to_pfn(page) + i); | ||
294 | 308 | ||
295 | if (unlikely(!PageTail(p) | | 309 | if (unlikely(!PageTail(p) | |
296 | (p->first_page != page))) | 310 | (p->first_page != page))) |