From patchwork Wed Aug 30 10:37:24 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Qu Wenruo X-Patchwork-Id: 13370541 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 083AFC83F2C for ; Wed, 30 Aug 2023 18:36:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233687AbjH3SgS (ORCPT ); Wed, 30 Aug 2023 14:36:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50424 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243292AbjH3Khv (ORCPT ); Wed, 30 Aug 2023 06:37:51 -0400 Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.220.28]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C95ECB9 for ; Wed, 30 Aug 2023 03:37:48 -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-out1.suse.de (Postfix) with ESMTPS id 8CCE82186F for ; Wed, 30 Aug 2023 10:37:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1693391867; 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=fh+CbL7qVFdhjbqVw5C2KzU1CVmTTB89zYsTcvp/qfE=; b=pn+Iwy8pV00zd8HOKssYV2IHxkVrmypK6CVj7l8VMS+hqjICen67qcrc94CoOgSfpEv5R7 FLjwMOS2xiOICoj2Q8/iy9+wudkykV6W2Ri28IJX+bzNmy7stz7SI5q2oXSQtn4amZVOtw fd7xq7uk2eUn8aAfVME/dUxRTXjObZQ= 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 DD2851353E for ; Wed, 30 Aug 2023 10:37:46 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id 8BmLKfob72SKcAAAMHmgww (envelope-from ) for ; Wed, 30 Aug 2023 10:37:46 +0000 From: Qu Wenruo To: linux-btrfs@vger.kernel.org Subject: [PATCH 2/5] btrfs: qgroup: use qgroup_iterator facility for btrfs_qgroup_free_refroot() Date: Wed, 30 Aug 2023 18:37:24 +0800 Message-ID: <419d4d9c5ee0ebd538eb90895ce1f09ea98e3672.1693391268.git.wqu@suse.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: References: MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org With the new qgroup_iterator_add() and qgroup_iterator_clean(), we can get rid of the ulist and its GFP_ATOMIC memory allocation. Signed-off-by: Qu Wenruo --- fs/btrfs/qgroup.c | 37 +++++++++++-------------------------- 1 file changed, 11 insertions(+), 26 deletions(-) diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c index de34e2aef710..c2a1173d9f00 100644 --- a/fs/btrfs/qgroup.c +++ b/fs/btrfs/qgroup.c @@ -3237,10 +3237,8 @@ void btrfs_qgroup_free_refroot(struct btrfs_fs_info *fs_info, u64 ref_root, u64 num_bytes, enum btrfs_qgroup_rsv_type type) { - struct btrfs_qgroup *qgroup; - struct ulist_node *unode; - struct ulist_iterator uiter; - int ret = 0; + struct btrfs_qgroup *cur; + LIST_HEAD(qgroup_list); if (!is_fstree(ref_root)) return; @@ -3257,8 +3255,8 @@ void btrfs_qgroup_free_refroot(struct btrfs_fs_info *fs_info, if (!fs_info->quota_root) goto out; - qgroup = find_qgroup_rb(fs_info, ref_root); - if (!qgroup) + cur = find_qgroup_rb(fs_info, ref_root); + if (!cur) goto out; if (num_bytes == (u64)-1) @@ -3266,32 +3264,19 @@ void btrfs_qgroup_free_refroot(struct btrfs_fs_info *fs_info, * We're freeing all pertrans rsv, get reserved value from * level 0 qgroup as real num_bytes to free. */ - num_bytes = qgroup->rsv.values[type]; + num_bytes = cur->rsv.values[type]; - ulist_reinit(fs_info->qgroup_ulist); - ret = ulist_add(fs_info->qgroup_ulist, qgroup->qgroupid, - qgroup_to_aux(qgroup), GFP_ATOMIC); - if (ret < 0) - goto out; - ULIST_ITER_INIT(&uiter); - while ((unode = ulist_next(fs_info->qgroup_ulist, &uiter))) { - struct btrfs_qgroup *qg; + qgroup_iterator_add(&qgroup_list, cur); + list_for_each_entry(cur, &qgroup_list, iterator) { struct btrfs_qgroup_list *glist; - qg = unode_aux_to_qgroup(unode); - - qgroup_rsv_release(fs_info, qg, num_bytes, type); - - list_for_each_entry(glist, &qg->groups, next_group) { - ret = ulist_add(fs_info->qgroup_ulist, - glist->group->qgroupid, - qgroup_to_aux(glist->group), GFP_ATOMIC); - if (ret < 0) - goto out; + qgroup_rsv_release(fs_info, cur, num_bytes, type); + list_for_each_entry(glist, &cur->groups, next_group) { + qgroup_iterator_add(&qgroup_list, glist->group); } } - out: + qgroup_iterator_clean(&qgroup_list); spin_unlock(&fs_info->qgroup_lock); }