Commit 745ad48e authored Oct 08, 2007 by Yan Zheng Committed by Linus Torvalds Oct 08, 2007

fix page release issue in filemap_fault



find_lock_page increases page's usage count, we should decrease it
before return VM_FAULT_SIGBUS

Signed-off-by: Yan <Zheng&lt;yanzheng@21cn.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent dd204d63

mm/filemap.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -1388,6 +1388,7 @@ int filemap_fault(struct vm_area_struct vma, struct vm_fault vmf)
		size = (i_size_read(inode) + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT;
		if (unlikely(vmf->pgoff >= size)) {
		unlock_page(page);
		page_cache_release(page);
		goto outside_data_content;
		}