From: Erez Zadok <ezk@cs.sunysb.edu>
Date: Tue, 27 Nov 2007 00:11:38 +0000 (-0500)
Subject: Unionfs: call wait_on_page_writeback before clear_page_dirty_for_io
X-Git-Url: https://git.fsl.cs.sunysb.edu/?a=commitdiff_plain;h=3a3fef9d5fa76f4363e0a1c5483ffb305ed3e0fd;p=unionfs-2.6.27.y.git

Unionfs: call wait_on_page_writeback before clear_page_dirty_for_io

CC: Hugh Dickins <hugh@veritas.com>

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
---

diff --git a/fs/unionfs/mmap.c b/fs/unionfs/mmap.c
index 8c07eed40cb..4d05352ed51 100644
--- a/fs/unionfs/mmap.c
+++ b/fs/unionfs/mmap.c
@@ -72,8 +72,8 @@ static int unionfs_writepage(struct page *page, struct writeback_control *wbc)
 	}
 
 	BUG_ON(!lower_mapping->a_ops->writepage);
-	clear_page_dirty_for_io(lower_page); /* emulate VFS behavior */
 	wait_on_page_writeback(lower_page); /* prevent multiple writers */
+	clear_page_dirty_for_io(lower_page); /* emulate VFS behavior */
 	err = lower_mapping->a_ops->writepage(lower_page, wbc);
 	if (err < 0)
 		goto out_release;