From d76ee18a8551e33ad7dbd55cac38bc7b094f3abb Mon Sep 17 00:00:00 2001 From: "Darrick J. Wong" Date: Fri, 27 May 2011 12:23:41 -0700 Subject: [PATCH] fs: block_page_mkwrite should wait for writeback to finish For filesystems such as nilfs2 and xfs that use block_page_mkwrite, modify that function to wait for pending writeback before allowing the page to become writable. This is needed to stabilize pages during writeback for those two filesystems. Signed-off-by: Darrick J. Wong Signed-off-by: Al Viro --- fs/buffer.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/buffer.c b/fs/buffer.c index 698c6b2cc462..49c9aada0374 100644 --- a/fs/buffer.c +++ b/fs/buffer.c @@ -2382,6 +2382,7 @@ int __block_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf, ret = -EAGAIN; goto out_unlock; } + wait_on_page_writeback(page); return 0; out_unlock: unlock_page(page);