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| author | Andrea Arcangeli <aarcange@redhat.com> | 2011-01-13 15:46:37 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-01-13 17:32:39 -0800 |
| commit | 14fd403f2146f740942d78af4e0ee59396ad8eab (patch) | |
| tree | c87734f6c6639684208d36548aa3687c6f460e23 /mm/memory.c | |
| parent | 2609ae6d10af0531e826335bd1445d1ace17c847 (diff) | |
| download | lwn-14fd403f2146f740942d78af4e0ee59396ad8eab.tar.gz lwn-14fd403f2146f740942d78af4e0ee59396ad8eab.zip | |
thp: export maybe_mkwrite
huge_memory.c needs it too when it fallbacks in copying hugepages into
regular fragmented pages if hugepage allocation fails during COW.
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Acked-by: Rik van Riel <riel@redhat.com>
Acked-by: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/memory.c')
| -rw-r--r-- | mm/memory.c | 13 |
1 files changed, 0 insertions, 13 deletions
diff --git a/mm/memory.c b/mm/memory.c index 1bbe9a22429c..bdf19366b705 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -2083,19 +2083,6 @@ static inline int pte_unmap_same(struct mm_struct *mm, pmd_t *pmd, return same; } -/* - * Do pte_mkwrite, but only if the vma says VM_WRITE. We do this when - * servicing faults for write access. In the normal case, do always want - * pte_mkwrite. But get_user_pages can cause write faults for mappings - * that do not have writing enabled, when used by access_process_vm. - */ -static inline pte_t maybe_mkwrite(pte_t pte, struct vm_area_struct *vma) -{ - if (likely(vma->vm_flags & VM_WRITE)) - pte = pte_mkwrite(pte); - return pte; -} - static inline void cow_user_page(struct page *dst, struct page *src, unsigned long va, struct vm_area_struct *vma) { /* |