From patchwork Thu Sep 22 00:06:26 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Qu Wenruo X-Patchwork-Id: 12984316 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D8175C32771 for ; Thu, 22 Sep 2022 00:07:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229962AbiIVAHS (ORCPT ); Wed, 21 Sep 2022 20:07:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47364 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229918AbiIVAHP (ORCPT ); Wed, 21 Sep 2022 20:07:15 -0400 Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.220.29]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C261CA3D70 for ; Wed, 21 Sep 2022 17:07:14 -0700 (PDT) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out2.suse.de (Postfix) with ESMTPS id 768A21F90A for ; Thu, 22 Sep 2022 00:07:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1663805233; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=T4vE4BE96XjUrmOovmSKqoiopkBs+6slwstscq9SOKc=; b=RNqp8ciU8vosLVB87uNvw8RzfZy4hktt9ESD9eO7PGJcRL/1lq5CLJaK3KNnJGWpSHNv13 b11Sn1Koz0diqs1TrP8Ywu+Oshevv/pmnLFM/5UZ9orRByglHlkRywnCQkQEOjt9jiBAQv 4+KUCQ/RGFWAIEyC1XBRak3+Qr7EtL8= Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id D0907139EF for ; Thu, 22 Sep 2022 00:07:12 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id KMK3JjCnK2O1LwAAMHmgww (envelope-from ) for ; Thu, 22 Sep 2022 00:07:12 +0000 From: Qu Wenruo To: linux-btrfs@vger.kernel.org Subject: [PATCH 09/16] btrfs: extract tree roots and zone info initialization into init/exit helpers Date: Thu, 22 Sep 2022 08:06:26 +0800 Message-Id: <75cfc046e94b166a46eab189c61912adadaddd3e.1663804335.git.wqu@suse.com> X-Mailer: git-send-email 2.37.3 In-Reply-To: References: MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org No functional change, but one special thing to notice: - No need to cleanup zone info As we call btrfs_close_devices() at error path to cleanup all zone device info, thus we don't need to handle it at open_ctree_tree_roots_init(). This is a break of the init/exit layer, but since devices info is not per-device, but shared for the whole btrfs module, such break should still be acceptable. Signed-off-by: Qu Wenruo --- fs/btrfs/disk-io.c | 88 ++++++++++++++++++++++++++++------------------ 1 file changed, 53 insertions(+), 35 deletions(-) diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 4fcdd15697d0..e03927cb00b8 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -3634,6 +3634,56 @@ static void open_ctree_chunk_tree_exit(struct btrfs_fs_info *fs_info) btrfs_mapping_tree_free(&fs_info->mapping_tree); } +static int open_ctree_tree_roots_init(struct btrfs_fs_info *fs_info) +{ + int ret; + + ret = init_tree_roots(fs_info); + if (ret) + goto error; + + /* + * Get zone type information of zoned block devices. This will also + * handle emulation of a zoned filesystem if a regular device has the + * zoned incompat feature flag set. + */ + ret = btrfs_get_dev_zone_info_all_devices(fs_info); + if (ret) { + btrfs_err(fs_info, + "zoned: failed to read device zone info: %d", + ret); + goto error; + } + + /* + * If we have a uuid root and we're not being told to rescan we need to + * check the generation here so we can set the + * BTRFS_FS_UPDATE_UUID_TREE_GEN bit. Otherwise we could commit the + * transaction during a balance or the log replay without updating the + * uuid generation, and then if we crash we would rescan the uuid tree, + * even though it was perfectly fine. + */ + if (fs_info->uuid_root && !btrfs_test_opt(fs_info, RESCAN_UUID_TREE) && + fs_info->generation == + btrfs_super_uuid_tree_generation(fs_info->super_copy)) + set_bit(BTRFS_FS_UPDATE_UUID_TREE_GEN, &fs_info->flags); + + return 0; + +error: + if (fs_info->data_reloc_root) + btrfs_drop_and_free_fs_root(fs_info, fs_info->data_reloc_root); + free_root_pointers(fs_info, true); + return ret; +} + +static void open_ctree_tree_roots_exit(struct btrfs_fs_info *fs_info) +{ + if (fs_info->data_reloc_root) + btrfs_drop_and_free_fs_root(fs_info, fs_info->data_reloc_root); + free_root_pointers(fs_info, true); +} + struct init_sequence { int (*init_func)(struct btrfs_fs_info *fs_info); void (*exit_func)(struct btrfs_fs_info *fs_info); @@ -3655,6 +3705,9 @@ static const struct init_sequence open_ctree_seq[] = { }, { .init_func = open_ctree_chunk_tree_init, .exit_func = open_ctree_chunk_tree_exit, + }, { + .init_func = open_ctree_tree_roots_init, + .exit_func = open_ctree_tree_roots_exit, } }; @@ -3680,36 +3733,6 @@ int __cold open_ctree(struct super_block *sb, char *options) open_ctree_res[i] = true; } - ret = init_tree_roots(fs_info); - if (ret) - goto fail_tree_roots; - - /* - * Get zone type information of zoned block devices. This will also - * handle emulation of a zoned filesystem if a regular device has the - * zoned incompat feature flag set. - */ - ret = btrfs_get_dev_zone_info_all_devices(fs_info); - if (ret) { - btrfs_err(fs_info, - "zoned: failed to read device zone info: %d", - ret); - goto fail_block_groups; - } - - /* - * If we have a uuid root and we're not being told to rescan we need to - * check the generation here so we can set the - * BTRFS_FS_UPDATE_UUID_TREE_GEN bit. Otherwise we could commit the - * transaction during a balance or the log replay without updating the - * uuid generation, and then if we crash we would rescan the uuid tree, - * even though it was perfectly fine. - */ - if (fs_info->uuid_root && !btrfs_test_opt(fs_info, RESCAN_UUID_TREE) && - fs_info->generation == - btrfs_super_uuid_tree_generation(fs_info->super_copy)) - set_bit(BTRFS_FS_UPDATE_UUID_TREE_GEN, &fs_info->flags); - ret = btrfs_verify_dev_extents(fs_info); if (ret) { btrfs_err(fs_info, @@ -3869,11 +3892,6 @@ int __cold open_ctree(struct super_block *sb, char *options) fail_block_groups: btrfs_put_block_group_cache(fs_info); - -fail_tree_roots: - if (fs_info->data_reloc_root) - btrfs_drop_and_free_fs_root(fs_info, fs_info->data_reloc_root); - free_root_pointers(fs_info, true); btrfs_free_block_groups(fs_info); fail: for (i = ARRAY_SIZE(open_ctree_seq) - 1; i >= 0; i--) {