commit 293fd5502be26aabb550e5194e7434dabc55179a
Author: Erez Zadok <[EMAIL PROTECTED]>
Date: Mon Nov 26 19:16:22 2007 -0500
Unionfs: call wait_on_page_writeback before clear_page_dirty_for_io
CC: Hugh Dickins <[EMAIL PROTECTED]>
Signed-off-by: Erez Zadok <[EMAIL PROTECTED]>
diff --git a/fs/unionfs/mmap.c b/fs/unionfs/mmap.c
index 21d0a55..a373811 100644
--- a/fs/unionfs/mmap.c
+++ b/fs/unionfs/mmap.c
@@ -103,8 +103,8 @@ static int unionfs_writepage(struct page *page, struct
writeback_control *wbc)
wbc->for_writepages = 0;
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);
wbc->for_writepages = saved_for_writepages; /* restore value */
if (err < 0)
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