From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 58625C41514 for ; Wed, 21 Aug 2019 13:54:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2E943233A0 for ; Wed, 21 Aug 2019 13:54:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729065AbfHUNyc (ORCPT ); Wed, 21 Aug 2019 09:54:32 -0400 Received: from mx2.suse.de ([195.135.220.15]:54278 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726371AbfHUNy1 (ORCPT ); Wed, 21 Aug 2019 09:54:27 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id 09194AC4A; Wed, 21 Aug 2019 13:54:26 +0000 (UTC) Received: by ds.suse.cz (Postfix, from userid 10065) id AD489DA7DB; Wed, 21 Aug 2019 15:54:51 +0200 (CEST) Date: Wed, 21 Aug 2019 15:54:51 +0200 From: David Sterba To: Anand Jain Cc: linux-btrfs@vger.kernel.org Subject: Re: [PATCH 3/3] btrfs: clean search for device item in finish sprout Message-ID: <20190821135450.GE18575@twin.jikos.cz> Reply-To: dsterba@suse.cz Mail-Followup-To: dsterba@suse.cz, Anand Jain , linux-btrfs@vger.kernel.org References: <20190821092634.6778-1-anand.jain@oracle.com> <20190821092634.6778-3-anand.jain@oracle.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190821092634.6778-3-anand.jain@oracle.com> User-Agent: Mutt/1.5.23.1-rc1 (2014-03-12) Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org On Wed, Aug 21, 2019 at 05:26:34PM +0800, Anand Jain wrote: > No need to btrfs_item_key_to_cpu() as we continue to next leaf. Also keep > the found_key and search key separate. > > Signed-off-by: Anand Jain > --- > fs/btrfs/volumes.c | 9 ++++----- > 1 file changed, 4 insertions(+), 5 deletions(-) > > diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c > index a343aa9cf5ba..1db06894aee6 100644 > --- a/fs/btrfs/volumes.c > +++ b/fs/btrfs/volumes.c > @@ -2471,6 +2471,7 @@ static int btrfs_finish_sprout(struct btrfs_trans_handle *trans) > struct extent_buffer *leaf; > struct btrfs_dev_item *dev_item; > struct btrfs_device *device; > + struct btrfs_key found_key; The declaration should be in the scope of use, ie. inside the while loop. > struct btrfs_key key; > u8 fs_uuid[BTRFS_FSID_SIZE]; > u8 dev_uuid[BTRFS_UUID_SIZE]; > @@ -2498,15 +2499,13 @@ static int btrfs_finish_sprout(struct btrfs_trans_handle *trans) > break; > if (ret < 0) > goto error; > - leaf = path->nodes[0]; > - btrfs_item_key_to_cpu(leaf, &key, path->slots[0]); > btrfs_release_path(path); > continue; > } > > - btrfs_item_key_to_cpu(leaf, &key, path->slots[0]); > - if (key.objectid != BTRFS_DEV_ITEMS_OBJECTID || > - key.type != BTRFS_DEV_ITEM_KEY) > + btrfs_item_key_to_cpu(leaf, &found_key, path->slots[0]); > + if (found_key.objectid != BTRFS_DEV_ITEMS_OBJECTID || > + found_key.type != BTRFS_DEV_ITEM_KEY) > break; > > dev_item = btrfs_item_ptr(leaf, path->slots[0], > -- > 2.21.0 (Apple Git-120)