[GFS2] mark_inode_dirty after write to stuffed file

Writes to stuffed files were not being marked dirty correctly.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
diff --git a/fs/gfs2/ops_address.c b/fs/gfs2/ops_address.c
index 8676c39..d8d69a7 100644
--- a/fs/gfs2/ops_address.c
+++ b/fs/gfs2/ops_address.c
@@ -472,8 +472,10 @@
 
 		SetPageUptodate(page);
 
-		if (inode->i_size < file_size)
+		if (inode->i_size < file_size) {
 			i_size_write(inode, file_size);
+			mark_inode_dirty(inode);
+		}
 	} else {
 		if (sdp->sd_args.ar_data == GFS2_DATA_ORDERED ||
 		    gfs2_is_jdata(ip))