make simple_lookup() usable for filesystems that set ->s_d_op

Signed-off-by: Al Viro <[email protected]>
wafgo · Jul 14, 2013 · 74931da · 74931da
1 parent ec193cf
commit 74931da
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/fs/libfs.c b/fs/libfs.c
@@ -61,7 +61,8 @@ struct dentry *simple_lookup(struct inode *dir, struct dentry *dentry, unsigned
 
 	if (dentry->d_name.len > NAME_MAX)
 		return ERR_PTR(-ENAMETOOLONG);
-	d_set_d_op(dentry, &simple_dentry_operations);
+	if (!dentry->d_sb->s_d_op)
+		d_set_d_op(dentry, &simple_dentry_operations);
 	d_add(dentry, NULL);
 	return NULL;
 }