From patchwork Fri Jan 17 21:25:47 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Josef Bacik X-Patchwork-Id: 11339811 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id CD7C1184C for ; Fri, 17 Jan 2020 21:26:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A83B2214AF for ; Fri, 17 Jan 2020 21:26:57 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=toxicpanda-com.20150623.gappssmtp.com header.i=@toxicpanda-com.20150623.gappssmtp.com header.b="L6pLQMz4" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729016AbgAQV05 (ORCPT ); Fri, 17 Jan 2020 16:26:57 -0500 Received: from mail-qt1-f195.google.com ([209.85.160.195]:45619 "EHLO mail-qt1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728992AbgAQV04 (ORCPT ); Fri, 17 Jan 2020 16:26:56 -0500 Received: by mail-qt1-f195.google.com with SMTP id w30so22860827qtd.12 for ; Fri, 17 Jan 2020 13:26:55 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=toxicpanda-com.20150623.gappssmtp.com; s=20150623; h=from:to:subject:date:message-id:in-reply-to:references:mime-version :content-transfer-encoding; bh=vDbW1mrEYanbdYu0SIhgQpf/34kUYfIu/uyTtfNmUlw=; b=L6pLQMz4oIHeppqwE/gkqSk/qm2kC7851euYi4yKlc/02iSMYzgum8RcaU2JHmsanK 0+SMzKLZlPwuAcgy0NlAdjB3ykmW/fXfsaRvNouQzv67FtpqHXqhGxh/ue8kBtuuQ7pk E7k6ltuMXMtx53ZjF43z9nIbCigJkRcCOiUpgLccoQk/8V+tJ+taxVrhfWtOmWXUD1ns asxrSgZCil3y7efGtzz3xEOVokenZlFV5e+NwzTw2MYlF/BL+LTx7rCTC2z+W0zV5rM0 XhtPFHxvb6QRyjl5JzXs9umpfmxwkRnHHpQxPxaddVjfep2iE/9hQ12j+1k/4zjueXyT XneA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=vDbW1mrEYanbdYu0SIhgQpf/34kUYfIu/uyTtfNmUlw=; b=B/FHrPbTeMoLXSz3EAY+Nc/12e/o/MbpkigTZGYBzUEphKSVxCkY+NWeuU1JM75uSd mGAzqlg3pw8jneU63lwQFz1OQP1G+Q9GVlN8ufvXrSgx2J/f/yR2toV8IM3/ixGvvT0n uBUXuoiNltkHTCjjtIsM0UGGibkltSTcLsCL4z38mpy1HABRzS24C2/apboXrlehRCDT vpCsYYZEskGQYs/lx2nxKZr/uvvgj11YZi/Ab28zJcMcQ7T+ykSH5ollmfXPFXt3b9ot sMXdvUO7drmbm3hpSgtyouYCOzwJ+U6L+Mp6TOmOLK83cbE65THDvo7Iw8i4LixUpSHn 42fA== X-Gm-Message-State: APjAAAVVCbYBx0vkT8GuAKW/74uTTVt6/5353SI9jE4Z9+W4Zw+BIAZe k084b4SrMMn3uoksMPttwD1xVQes+MTrag== X-Google-Smtp-Source: APXvYqy1hANnpnp+Rv8IxHbRYPdJdZTzMFhP/G10QObaCE9RyZLMy7zw4SigD0BX7BZ3V5dLuNmTBw== X-Received: by 2002:aed:3e53:: with SMTP id m19mr9323513qtf.32.1579296414969; Fri, 17 Jan 2020 13:26:54 -0800 (PST) Received: from localhost ([107.15.81.208]) by smtp.gmail.com with ESMTPSA id i4sm12204348qki.45.2020.01.17.13.26.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 17 Jan 2020 13:26:54 -0800 (PST) From: Josef Bacik To: linux-btrfs@vger.kernel.org, kernel-team@fb.com Subject: [PATCH 28/43] btrfs: push grab_fs_root into read_fs_root Date: Fri, 17 Jan 2020 16:25:47 -0500 Message-Id: <20200117212602.6737-29-josef@toxicpanda.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200117212602.6737-1-josef@toxicpanda.com> References: <20200117212602.6737-1-josef@toxicpanda.com> MIME-Version: 1.0 Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org All of relocation uses read_fs_root to lookup fs roots, so push the btrfs_grab_fs_root() up into that helper and remove the individual calls. Signed-off-by: Josef Bacik --- fs/btrfs/relocation.c | 38 +++++++++----------------------------- 1 file changed, 9 insertions(+), 29 deletions(-) diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c index 81f383df8f63..d166cc742f75 100644 --- a/fs/btrfs/relocation.c +++ b/fs/btrfs/relocation.c @@ -613,6 +613,7 @@ static struct btrfs_root *read_fs_root(struct btrfs_fs_info *fs_info, u64 root_objectid) { struct btrfs_key key; + struct btrfs_root *root; key.objectid = root_objectid; key.type = BTRFS_ROOT_ITEM_KEY; @@ -621,7 +622,12 @@ static struct btrfs_root *read_fs_root(struct btrfs_fs_info *fs_info, else key.offset = (u64)-1; - return btrfs_get_fs_root(fs_info, &key, false); + root = btrfs_get_fs_root(fs_info, &key, false); + if (IS_ERR(root)) + return root; + if (!btrfs_grab_fs_root(root)) + return ERR_PTR(-ENOENT); + return root; } static noinline_for_stack @@ -893,10 +899,6 @@ struct backref_node *build_backref_tree(struct reloc_control *rc, err = PTR_ERR(root); goto out; } - if (!btrfs_grab_fs_root(root)) { - err = -ENOENT; - goto out; - } if (!test_bit(BTRFS_ROOT_REF_COWS, &root->state)) cur->cowonly = 1; @@ -2474,8 +2476,6 @@ int prepare_to_merge(struct reloc_control *rc, int err) list_del_init(&reloc_root->root_list); root = read_fs_root(fs_info, reloc_root->root_key.offset); - if (!btrfs_grab_fs_root(root)) - BUG(); BUG_ON(IS_ERR(root)); BUG_ON(root->reloc_root != reloc_root); @@ -2546,8 +2546,6 @@ void merge_reloc_roots(struct reloc_control *rc) if (btrfs_root_refs(&reloc_root->root_item) > 0) { root = read_fs_root(fs_info, reloc_root->root_key.offset); - if (!btrfs_grab_fs_root(root)) - BUG(); BUG_ON(IS_ERR(root)); BUG_ON(root->reloc_root != reloc_root); @@ -2610,8 +2608,6 @@ static int record_reloc_root_in_trans(struct btrfs_trans_handle *trans, return 0; root = read_fs_root(fs_info, reloc_root->root_key.offset); - if (!btrfs_grab_fs_root(root)) - BUG(); BUG_ON(IS_ERR(root)); BUG_ON(root->reloc_root != reloc_root); ret = btrfs_record_root_in_trans(trans, root); @@ -3710,10 +3706,6 @@ static int find_data_references(struct reloc_control *rc, err = PTR_ERR(root); goto out_free; } - if (!btrfs_grab_fs_root(root)) { - err = -ENOENT; - goto out_free; - } key.objectid = ref_objectid; key.type = BTRFS_EXTENT_DATA_KEY; @@ -4308,8 +4300,6 @@ struct inode *create_reloc_inode(struct btrfs_fs_info *fs_info, root = read_fs_root(fs_info, BTRFS_DATA_RELOC_TREE_OBJECTID); if (IS_ERR(root)) return ERR_CAST(root); - if (!btrfs_grab_fs_root(root)) - return ERR_PTR(-ENOENT); trans = btrfs_start_transaction(root, 6); if (IS_ERR(trans)) { @@ -4593,10 +4583,6 @@ int btrfs_recover_relocation(struct btrfs_root *root) if (btrfs_root_refs(&reloc_root->root_item) > 0) { fs_root = read_fs_root(fs_info, reloc_root->root_key.offset); - if (!btrfs_grab_fs_root(fs_root)) { - err = -ENOENT; - goto out; - } if (IS_ERR(fs_root)) { ret = PTR_ERR(fs_root); if (ret != -ENOENT) { @@ -4659,10 +4645,6 @@ int btrfs_recover_relocation(struct btrfs_root *root) list_add_tail(&reloc_root->root_list, &reloc_roots); goto out_free; } - if (!btrfs_grab_fs_root(fs_root)) { - err = -ENOENT; - goto out_free; - } err = __add_reloc_root(reloc_root); BUG_ON(err < 0); /* -ENOMEM or logic error */ @@ -4702,10 +4684,8 @@ int btrfs_recover_relocation(struct btrfs_root *root) if (IS_ERR(fs_root)) { err = PTR_ERR(fs_root); } else { - if (btrfs_grab_fs_root(fs_root)) { - err = btrfs_orphan_cleanup(fs_root); - btrfs_put_fs_root(fs_root); - } + err = btrfs_orphan_cleanup(fs_root); + btrfs_put_fs_root(fs_root); } } return err;