fs: move permission check back into __lookup_hash

The caller that didn't need it is gone.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

fs/namei.c

@@ -1121,11 +1121,13 @@ int vfs_path_lookup(struct dentry *dentry, struct vfsmount *mnt,
 static struct dentry *__lookup_hash(struct qstr *name,
 		struct dentry *base, struct nameidata *nd)
 {
+	struct inode *inode = base->d_inode;
 	struct dentry *dentry;
-	struct inode *inode;
 	int err;
 
-	inode = base->d_inode;
+	err = exec_permission(inode);
+	if (err)
+		return ERR_PTR(err);
 
 	/*
 	 * See if the low-level filesystem might want
@@ -1161,11 +1163,6 @@ out:
  */
 static struct dentry *lookup_hash(struct nameidata *nd)
 {
-	int err;
-
-	err = exec_permission(nd->path.dentry->d_inode);
-	if (err)
-		return ERR_PTR(err);
 	return __lookup_hash(&nd->last, nd->path.dentry, nd);
 }
 
@@ -1213,9 +1210,6 @@ struct dentry *lookup_one_len(const char *name, struct dentry *base, int len)
 	if (err)
 		return ERR_PTR(err);
 
-	err = exec_permission(base->d_inode);
-	if (err)
-		return ERR_PTR(err);
 	return __lookup_hash(&this, base, NULL);
 }