drbd: ->d_parent is never NULL or negative

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

drivers/block/drbd/drbd_debugfs.c

@@ -430,9 +430,6 @@ static int drbd_single_open(struct file *file, int (*show)(struct seq_file *, vo
 	/* Are we still linked,
 	 * or has debugfs_remove() already been called? */
 	parent = file->f_path.dentry->d_parent;
-	/* not sure if this can happen: */
-	if (!parent || d_really_is_negative(parent))
-		goto out;
 	/* serialize with d_delete() */
 	inode_lock(d_inode(parent));
 	/* Make sure the object is still alive */
@@ -445,7 +442,6 @@ static int drbd_single_open(struct file *file, int (*show)(struct seq_file *, vo
 		if (ret)
 			kref_put(kref, release);
 	}
-out:
 	return ret;
 }
 

security/inode.c

@@ -191,10 +191,6 @@ void securityfs_remove(struct dentry *dentry)
 	if (!dentry || IS_ERR(dentry))
 		return;
 
-	parent = dentry->d_parent;
-	if (!parent || d_really_is_negative(parent))
-		return;
-
 	inode_lock(d_inode(parent));
 	if (simple_positive(dentry)) {
 		if (d_is_dir(dentry))