Commit 4d7670e0 authored by Nick Piggin's avatar Nick Piggin Committed by Linus Torvalds

[PATCH] mm: cleanup rmap

Thanks to Bill Irwin for pointing this out.
Signed-off-by: default avatarNick Piggin <npiggin@suse.de>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 2822c1aa
...@@ -445,16 +445,12 @@ void page_add_anon_rmap(struct page *page, ...@@ -445,16 +445,12 @@ void page_add_anon_rmap(struct page *page,
if (atomic_inc_and_test(&page->_mapcount)) { if (atomic_inc_and_test(&page->_mapcount)) {
struct anon_vma *anon_vma = vma->anon_vma; struct anon_vma *anon_vma = vma->anon_vma;
pgoff_t index;
BUG_ON(!anon_vma); BUG_ON(!anon_vma);
anon_vma = (void *) anon_vma + PAGE_MAPPING_ANON; anon_vma = (void *) anon_vma + PAGE_MAPPING_ANON;
page->mapping = (struct address_space *) anon_vma; page->mapping = (struct address_space *) anon_vma;
index = (address - vma->vm_start) >> PAGE_SHIFT; page->index = linear_page_index(vma, address);
index += vma->vm_pgoff;
index >>= PAGE_CACHE_SHIFT - PAGE_SHIFT;
page->index = index;
inc_page_state(nr_mapped); inc_page_state(nr_mapped);
} }
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment