From: Nikita Danilov <nikita@clusterfs.com>
When ->writepage() returns WRITEPAGE_ACTIVATE, the page is still locked.
Explicitly unlock the page in mpage_writepages().
Signed-off-by: Nikita Danilov <nikita@clusterfs.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---
fs/mpage.c | 2 ++
1 files changed, 2 insertions(+)
diff -puN fs/mpage.c~mpage_writepages-page-locking-fix fs/mpage.c
--- 25/fs/mpage.c~mpage_writepages-page-locking-fix Wed Apr 27 16:53:15 2005
+++ 25-akpm/fs/mpage.c Wed Apr 27 16:53:15 2005
@@ -727,6 +727,8 @@ retry:
&last_block_in_bio, &ret, wbc,
writepage_fn);
}
+ if (unlikely(ret == WRITEPAGE_ACTIVATE))
+ unlock_page(page);
if (ret || (--(wbc->nr_to_write) <= 0))
done = 1;
if (wbc->nonblocking && bdi_write_congested(bdi)) {
_