From patchwork Thu Sep 22 00:06:24 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Qu Wenruo X-Patchwork-Id: 12984313 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 A7AB2C6FA8E for ; Thu, 22 Sep 2022 00:07:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229916AbiIVAHP (ORCPT ); Wed, 21 Sep 2022 20:07:15 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47324 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229909AbiIVAHN (ORCPT ); Wed, 21 Sep 2022 20:07:13 -0400 Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.220.29]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B307C9C2D6 for ; Wed, 21 Sep 2022 17:07:12 -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 6A57C1F8E5 for ; Thu, 22 Sep 2022 00:07:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1663805231; 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=IYU6Us/1DxhmoZqa1rDaLK/pI/jaIqrUDN9l/DbaQag=; b=o3rs1OzaDTeU8zIg9vHztmSsbZlFiV+o4WaBU3Sv2EIfp8GC4p18Ln2HwXmhHkBA01qwR1 hyZwEcWUb2E9mrsbrljJ5uMpdpb1MpX9GCN5V/Snxad56quFmax7KhZlVOvPj5qs097Lxi t9ieQlub1CERonyFQxnl1bVQlj7dM6E= 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 C443E139EF for ; Thu, 22 Sep 2022 00:07:10 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id EDK4Iy6nK2O1LwAAMHmgww (envelope-from ) for ; Thu, 22 Sep 2022 00:07:10 +0000 From: Qu Wenruo To: linux-btrfs@vger.kernel.org Subject: [PATCH 07/16] btrfs: move btrfs_init_workqueus() and btrfs_stop_all_workers() into open_ctree_seq[] Date: Thu, 22 Sep 2022 08:06:24 +0800 Message-Id: <711ca0a9e7c8d21cfa814a68ec376f0673d4798c.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 Those two helpers are already doing all the work, just move them into the open_ctree_seq[] array. There is only one small change: - Call btrfs_stop_all_workers() inside btrfs_init_workqueus() for error handling Since open_ctree_seq[] makes all error path to call the exit function if and only if the corresponding init function finished without error. This means, if btrfs_init_workqueus() failed due to -ENOMEM, then we won't call btrfs_stop_all_workers() to cleanup whatever is already allocatd. To fix this problem, call btrfs_stop_all_workers() inside btrfs_init_workqueus() when we hit errors. Function btrfs_stop_all_workers() already has the checks to handle NULL pointers. Signed-off-by: Qu Wenruo --- fs/btrfs/disk-io.c | 19 ++++++++----------- 1 file changed, 8 insertions(+), 11 deletions(-) diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index ec9038eeaa0f..0e1fe12c1c99 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -2318,11 +2318,12 @@ static int btrfs_init_workqueues(struct btrfs_fs_info *fs_info) fs_info->endio_freespace_worker && fs_info->rmw_workers && fs_info->caching_workers && fs_info->fixup_workers && fs_info->delayed_workers && fs_info->qgroup_rescan_workers && - fs_info->discard_ctl.discard_workers)) { - return -ENOMEM; - } - + fs_info->discard_ctl.discard_workers)) + goto error; return 0; +error: + btrfs_stop_all_workers(fs_info); + return -ENOMEM; } static int btrfs_init_csum_hash(struct btrfs_fs_info *fs_info, u16 csum_type) @@ -3577,6 +3578,9 @@ static const struct init_sequence open_ctree_seq[] = { }, { .init_func = open_ctree_features_init, .exit_func = NULL, + }, { + .init_func = btrfs_init_workqueues, + .exit_func = btrfs_stop_all_workers, } }; @@ -3604,12 +3608,6 @@ int __cold open_ctree(struct super_block *sb, char *options) open_ctree_res[i] = true; } - ret = btrfs_init_workqueues(fs_info); - if (ret) { - err = ret; - goto fail_sb_buffer; - } - mutex_lock(&fs_info->chunk_mutex); ret = btrfs_read_sys_array(fs_info); mutex_unlock(&fs_info->chunk_mutex); @@ -3854,7 +3852,6 @@ int __cold open_ctree(struct super_block *sb, char *options) free_root_pointers(fs_info, true); fail_sb_buffer: - btrfs_stop_all_workers(fs_info); btrfs_free_block_groups(fs_info); btrfs_mapping_tree_free(&fs_info->mapping_tree); fail: