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authorHugh Dickins <hugh@veritas.com>2005-11-29 16:54:51 +0000
committerLinus Torvalds <torvalds@g5.osdl.org>2005-11-29 14:09:16 -0800
commite5bbe4dfc8dbfc50ef89f8641e020616d4d1e69e (patch)
tree8bf22ece18b6f7e20024bef19d8afd2a0b07556a
parent5d2a2dbbc1025dbf7998b9289574d9592b8f21cc (diff)
downloadop-kernel-dev-e5bbe4dfc8dbfc50ef89f8641e020616d4d1e69e.zip
op-kernel-dev-e5bbe4dfc8dbfc50ef89f8641e020616d4d1e69e.tar.gz
[PATCH] pfnmap: remove src_page from do_wp_page
Clean away do_wp_page's "src_page": cow_user_page makes it unnecessary. Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
-rw-r--r--mm/memory.c7
1 files changed, 3 insertions, 4 deletions
diff --git a/mm/memory.c b/mm/memory.c
index 745b348..ae259b6 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -1433,12 +1433,11 @@ static int do_wp_page(struct mm_struct *mm, struct vm_area_struct *vma,
unsigned long address, pte_t *page_table, pmd_t *pmd,
spinlock_t *ptl, pte_t orig_pte)
{
- struct page *old_page, *src_page, *new_page;
+ struct page *old_page, *new_page;
pte_t entry;
int ret = VM_FAULT_MINOR;
old_page = vm_normal_page(vma, address, orig_pte);
- src_page = old_page;
if (!old_page)
goto gotten;
@@ -1466,7 +1465,7 @@ gotten:
if (unlikely(anon_vma_prepare(vma)))
goto oom;
- if (src_page == ZERO_PAGE(address)) {
+ if (old_page == ZERO_PAGE(address)) {
new_page = alloc_zeroed_user_highpage(vma, address);
if (!new_page)
goto oom;
@@ -1474,7 +1473,7 @@ gotten:
new_page = alloc_page_vma(GFP_HIGHUSER, vma, address);
if (!new_page)
goto oom;
- cow_user_page(new_page, src_page, address);
+ cow_user_page(new_page, old_page, address);
}
/*
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