[PATCH 4.9 103/129] fuse: fix missing unlock_page in fuse_writepage()

[Greg Kroah-Hartman]

From: Vasily Averin <v...@virtuozzo.com>

commit d5880c7a8620290a6c90ced7a0e8bd0ad9419601 upstream.

unlock_page() was missing in case of an already in-flight write against the
same page.

Signed-off-by: Vasily Averin <v...@virtuozzo.com>
Fixes: ff17be086477 ("fuse: writepage: skip already in flight")
Cc: <sta...@vger.kernel.org> # v3.13
Signed-off-by: Miklos Szeredi <mszer...@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>

---
 fs/fuse/file.c |    1 +
 1 file changed, 1 insertion(+)

--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -1694,6 +1694,7 @@ static int fuse_writepage(struct page *p
                WARN_ON(wbc->sync_mode == WB_SYNC_ALL);
 
                redirty_page_for_writepage(wbc, page);
+               unlock_page(page);
                return 0;
        }