From patchwork Tue May 5 05:22:33 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Al Viro X-Patchwork-Id: 6335071 Return-Path: X-Original-To: patchwork-linux-fsdevel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 297619F32E for ; Tue, 5 May 2015 05:39:55 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 600C52021A for ; Tue, 5 May 2015 05:39:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7AC8B201F4 for ; Tue, 5 May 2015 05:39:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754736AbbEEFfH (ORCPT ); Tue, 5 May 2015 01:35:07 -0400 Received: from zeniv.linux.org.uk ([195.92.253.2]:39962 "EHLO ZenIV.linux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755616AbbEEFXG (ORCPT ); Tue, 5 May 2015 01:23:06 -0400 Received: from viro by ZenIV.linux.org.uk with local (Exim 4.76 #1 (Red Hat Linux)) id 1YpVJv-0001NL-4v; Tue, 05 May 2015 05:23:03 +0000 From: Al Viro To: Linus Torvalds Cc: Neil Brown , Christoph Hellwig , linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org Subject: [PATCH 59/79] put_link: nd->depth massage, part 8 Date: Tue, 5 May 2015 06:22:33 +0100 Message-Id: <1430803373-4948-59-git-send-email-viro@ZenIV.linux.org.uk> X-Mailer: git-send-email 1.7.7.6 In-Reply-To: <20150505052205.GS889@ZenIV.linux.org.uk> References: <20150505052205.GS889@ZenIV.linux.org.uk> Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Al Viro all calls are preceded by decrement of nd->depth; move it into put_link() itself. Signed-off-by: Al Viro --- fs/namei.c | 18 ++++-------------- 1 file changed, 4 insertions(+), 14 deletions(-) diff --git a/fs/namei.c b/fs/namei.c index b7b1c2b..0713961 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -754,7 +754,7 @@ void nd_jump_link(struct nameidata *nd, struct path *path) static inline void put_link(struct nameidata *nd) { - struct saved *last = nd->stack + nd->depth; + struct saved *last = nd->stack + --nd->depth; struct inode *inode = last->link.dentry->d_inode; if (last->cookie && inode->i_op->put_link) inode->i_op->put_link(last->link.dentry, last->cookie); @@ -1832,7 +1832,6 @@ Walked: err = 0; if (unlikely(!s)) { /* jumped */ - nd->depth--; put_link(nd); } else { if (*s == '/') { @@ -1860,16 +1859,13 @@ Walked: } terminate_walk(nd); Err: - while (unlikely(nd->depth > 1)) { - nd->depth--; + while (unlikely(nd->depth > 1)) put_link(nd); - } return err; OK: if (unlikely(nd->depth > 1)) { name = nd->stack[nd->depth - 1].name; err = walk_component(nd, LOOKUP_FOLLOW); - nd->depth--; put_link(nd); goto Walked; } @@ -2013,12 +2009,9 @@ static int trailing_symlink(struct nameidata *nd) } nd->inode = nd->path.dentry->d_inode; error = link_path_walk(s, nd); - if (unlikely(error)) { - nd->depth--; + if (unlikely(error)) put_link(nd); - return error; - } - return 0; + return error; } static inline int lookup_last(struct nameidata *nd) @@ -2058,7 +2051,6 @@ static int path_lookupat(int dfd, const struct filename *name, if (err) break; err = lookup_last(nd); - nd->depth--; put_link(nd); } } @@ -2408,7 +2400,6 @@ path_mountpoint(int dfd, const struct filename *name, struct path *path, if (err) break; err = mountpoint_last(nd, path); - nd->depth--; put_link(nd); } out: @@ -3295,7 +3286,6 @@ static struct file *path_openat(int dfd, struct filename *pathname, if (unlikely(error)) break; error = do_last(nd, file, op, &opened, pathname); - nd->depth--; put_link(nd); } out: