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authorLinus Torvalds <torvalds@linux-foundation.org>2010-08-12 10:15:10 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-08-12 10:15:10 -0700
commit1021a645344d4a77333e19e60d37b9343be0d7b7 (patch)
tree7a78ab55f27f97209ed1b85ccfd88c6d5b8416d3 /include/linux/pagemap.h
parent7367f5b013fee33f7d40a5a10a39d5134f529ec8 (diff)
parent28957a5467bab9ed51a237d21e31055fad987887 (diff)
Merge branch 'hwpoison' of git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-mce-2.6
* 'hwpoison' of git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-mce-2.6: hugetlb: add missing unlock in avoidcopy path in hugetlb_cow() hwpoison: rename CONFIG HWPOISON, hugetlb: support hwpoison injection for hugepage HWPOISON, hugetlb: detect hwpoison in hugetlb code HWPOISON, hugetlb: isolate corrupted hugepage HWPOISON, hugetlb: maintain mce_bad_pages in handling hugepage error HWPOISON, hugetlb: set/clear PG_hwpoison bits on hugepage HWPOISON, hugetlb: enable error handling path for hugepage hugetlb, rmap: add reverse mapping for hugepage hugetlb: move definition of is_vm_hugetlb_page() to hugepage_inline.h Fix up trivial conflicts in mm/memory-failure.c
Diffstat (limited to 'include/linux/pagemap.h')
-rw-r--r--include/linux/pagemap.h9
1 files changed, 8 insertions, 1 deletions
diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h
index 78a702ce4fc..e12cdc6d79e 100644
--- a/include/linux/pagemap.h
+++ b/include/linux/pagemap.h
@@ -13,6 +13,7 @@
#include <linux/gfp.h>
#include <linux/bitops.h>
#include <linux/hardirq.h> /* for in_interrupt() */
+#include <linux/hugetlb_inline.h>
/*
* Bits in mapping->flags. The lower __GFP_BITS_SHIFT bits are the page
@@ -281,10 +282,16 @@ static inline loff_t page_offset(struct page *page)
return ((loff_t)page->index) << PAGE_CACHE_SHIFT;
}
+extern pgoff_t linear_hugepage_index(struct vm_area_struct *vma,
+ unsigned long address);
+
static inline pgoff_t linear_page_index(struct vm_area_struct *vma,
unsigned long address)
{
- pgoff_t pgoff = (address - vma->vm_start) >> PAGE_SHIFT;
+ pgoff_t pgoff;
+ if (unlikely(is_vm_hugetlb_page(vma)))
+ return linear_hugepage_index(vma, address);
+ pgoff = (address - vma->vm_start) >> PAGE_SHIFT;
pgoff += vma->vm_pgoff;
return pgoff >> (PAGE_CACHE_SHIFT - PAGE_SHIFT);
}