From: Hugh Dickins <hugh@xxxxxxxxxxx>
Signed-off-by: Erez Zadok <ezk@xxxxxxxxxxxxx>
---
fs/unionfs/mmap.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/fs/unionfs/mmap.c b/fs/unionfs/mmap.c
index 4918f77..1e10280 100644
--- a/fs/unionfs/mmap.c
+++ b/fs/unionfs/mmap.c
@@ -56,6 +56,7 @@ static int unionfs_writepage(struct page *page, struct writeback_control *wbc)
copy_highpage(lower_page, page);
flush_dcache_page(lower_page);
SetPageUptodate(lower_page);
+ set_page_dirty(lower_page);
/*
* Call lower writepage (expects locked page). However, if we are
@@ -66,12 +67,11 @@ static int unionfs_writepage(struct page *page, struct writeback_control *wbc)
* success.
*/
if (wbc->for_reclaim) {
- set_page_dirty(lower_page);
unlock_page(lower_page);
goto out_release;
}
+
BUG_ON(!lower_mapping->a_ops->writepage);
- set_page_dirty(lower_page);
clear_page_dirty_for_io(lower_page); /* emulate VFS behavior */
err = lower_mapping->a_ops->writepage(lower_page, wbc);
if (err < 0)
--
1.5.2.2
-
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