ceph: show wsize only if non-default

This is how it was before commit 95cca2b4 ("ceph: limit osd write
size") went in.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>

fs/ceph/super.c

@@ -551,7 +551,7 @@ static int ceph_show_options(struct seq_file *m, struct dentry *root)
 
 	if (fsopt->mds_namespace)
 		seq_show_option(m, "mds_namespace", fsopt->mds_namespace);
-	if (fsopt->wsize)
+	if (fsopt->wsize != CEPH_MAX_WRITE_SIZE)
 		seq_printf(m, ",wsize=%d", fsopt->wsize);
 	if (fsopt->rsize != CEPH_MAX_READ_SIZE)
 		seq_printf(m, ",rsize=%d", fsopt->rsize);