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authorLinus Torvalds <torvalds@linux-foundation.org>2010-10-26 10:13:10 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-10-26 10:13:10 -0700
commitf1ebdd60cc73ed36fd977f7e719ce70d2f5cd1c0 (patch)
tree225cb2ea2c0f8990f29383058a07206cfd835893 /mm/rmap.c
parentf99d055398d53c8f769d5153b3fdce1d2556e7ff (diff)
parent46e387bbd82d438b9131e237e6e2cb55a825da49 (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: (22 commits) Add _addr_lsb field to ia64 siginfo Fix migration.c compilation on s390 HWPOISON: Remove retry loop for try_to_unmap HWPOISON: Turn addr_valid from bitfield into char HWPOISON: Disable DEBUG by default HWPOISON: Convert pr_debugs to pr_info HWPOISON: Improve comments in memory-failure.c x86: HWPOISON: Report correct address granuality for huge hwpoison faults Encode huge page size for VM_FAULT_HWPOISON errors Fix build error with !CONFIG_MIGRATION hugepage: move is_hugepage_on_freelist inside ifdef to avoid warning Clean up __page_set_anon_rmap HWPOISON, hugetlb: fix unpoison for hugepage HWPOISON, hugetlb: soft offlining for hugepage HWPOSION, hugetlb: recover from free hugepage error when !MF_COUNT_INCREASED hugetlb: move refcounting in hugepage allocation inside hugetlb_lock HWPOISON, hugetlb: add free check to dequeue_hwpoison_huge_page() hugetlb: hugepage migration core hugetlb: redefine hugepage copy functions hugetlb: add allocate function for hugepage migration ...
Diffstat (limited to 'mm/rmap.c')
-rw-r--r--mm/rmap.c25
1 files changed, 8 insertions, 17 deletions
diff --git a/mm/rmap.c b/mm/rmap.c
index 5f17fad1bee8..f5ad996a4a8f 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -780,10 +780,10 @@ void page_move_anon_rmap(struct page *page,
}
/**
- * __page_set_anon_rmap - setup new anonymous rmap
- * @page: the page to add the mapping to
- * @vma: the vm area in which the mapping is added
- * @address: the user virtual address mapped
+ * __page_set_anon_rmap - set up new anonymous rmap
+ * @page: Page to add to rmap
+ * @vma: VM area to add page to.
+ * @address: User virtual address of the mapping
* @exclusive: the page is exclusively owned by the current process
*/
static void __page_set_anon_rmap(struct page *page,
@@ -793,25 +793,16 @@ static void __page_set_anon_rmap(struct page *page,
BUG_ON(!anon_vma);
+ if (PageAnon(page))
+ return;
+
/*
* If the page isn't exclusively mapped into this vma,
* we must use the _oldest_ possible anon_vma for the
* page mapping!
*/
- if (!exclusive) {
- if (PageAnon(page))
- return;
+ if (!exclusive)
anon_vma = anon_vma->root;
- } else {
- /*
- * In this case, swapped-out-but-not-discarded swap-cache
- * is remapped. So, no need to update page->mapping here.
- * We convice anon_vma poitned by page->mapping is not obsolete
- * because vma->anon_vma is necessary to be a family of it.
- */
- if (PageAnon(page))
- return;
- }
anon_vma = (void *) anon_vma + PAGE_MAPPING_ANON;
page->mapping = (struct address_space *) anon_vma;

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