From patchwork Mon Aug 7 11:09:27 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Qi Zheng X-Patchwork-Id: 13343768 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 1BA4EC07E8A for ; Mon, 7 Aug 2023 11:23:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232507AbjHGLX5 (ORCPT ); Mon, 7 Aug 2023 07:23:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59106 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230362AbjHGLW1 (ORCPT ); Mon, 7 Aug 2023 07:22:27 -0400 Received: from mail-pg1-x52c.google.com (mail-pg1-x52c.google.com [IPv6:2607:f8b0:4864:20::52c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3B9E5C4 for ; Mon, 7 Aug 2023 04:19:50 -0700 (PDT) Received: by mail-pg1-x52c.google.com with SMTP id 41be03b00d2f7-564670fad4bso390974a12.1 for ; Mon, 07 Aug 2023 04:19:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bytedance.com; s=google; t=1691407097; x=1692011897; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=NbTnBXz1rftevvtnrJnbyUTbBXZHNhmRyJT9VBuSKEk=; b=I0fRADtMeQ7ZYN4lawqOYqpZyATzMma8+JI7v8Zk4meeIAhlCUAEE4oant9GMpCU9c e1/RDTnNhNkcs7YzYpKhdN1XDfh3C1CzV0J+KZ3/D4mlZFUuIdDCGJV9GUewRdITND6b 4GYUs3S5ZWDZ5Jh0dvaqr1VDHgapHBN1S1ychIZWiQ7oRwFoKrrtIpw0qxts3s8CAjGr ydAlHOG9qMq4ZFwUnfssYxxr3X8fPLTZ5CluqYa54YAa1ITLLjbOydQ2pku3tDphziTJ CgtcI6R1bGyzpwkNzZouq5zSQbcmQPiHyBeMkjagL4bEVNYZ8WMV4Nik0kWzaqHzYD2e Au8g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1691407097; x=1692011897; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=NbTnBXz1rftevvtnrJnbyUTbBXZHNhmRyJT9VBuSKEk=; b=fARyO7QJzDvb1PBPWORprNJrR4wuxy5xHA1enuxSWK9f9VlVqRC6TfQnw1oX664m3m CAJRaz9DK/V5FtYk06Z+Nu0MG0rFbn20mxiOtHLQjv7FQkBprc/eH0GfY1zcd9NrD9aw IAT/5baTkzINdb44UeEnkC7u6fU8xUP8dJnX5lOg6y5z6uzYZulDRx0ctMuZAL6fQ94g jT4TlbW1dOJJKUaYmirpM9PBfHo+Bh4xlEhj0/ny6fAWNnsQSfkIlyX22iWxrCkh+tas bzLZFb3QvgbwKMn2xKyWdPVKRhNnZGoWPvXsTfb7ascFwBJVW/qxD+1/JoX6lgTysoxA B1EA== X-Gm-Message-State: ABy/qLZ2USWZ4tzwudWD2cpOKKP5vtG8mEhrcrBZOkSJWaE3h3ZaPVjU kf34khqSuaSt589AlZkFW1Rh+Q== X-Google-Smtp-Source: APBJJlHEA3k+axkYWIvy1nHuTMRTEcDAAx3CbSXEmipYg83y/9axHDl54yrvmY4ExsXdwismqiSLfg== X-Received: by 2002:a17:90a:901:b0:268:3a31:3e4d with SMTP id n1-20020a17090a090100b002683a313e4dmr23078546pjn.2.1691407096844; Mon, 07 Aug 2023 04:18:16 -0700 (PDT) Received: from C02DW0BEMD6R.bytedance.net ([203.208.167.146]) by smtp.gmail.com with ESMTPSA id y13-20020a17090aca8d00b0025be7b69d73sm5861191pjt.12.2023.08.07.04.18.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 07 Aug 2023 04:18:16 -0700 (PDT) From: Qi Zheng To: akpm@linux-foundation.org, david@fromorbit.com, tkhai@ya.ru, vbabka@suse.cz, roman.gushchin@linux.dev, djwong@kernel.org, brauner@kernel.org, paulmck@kernel.org, tytso@mit.edu, steven.price@arm.com, cel@kernel.org, senozhatsky@chromium.org, yujie.liu@intel.com, gregkh@linuxfoundation.org, muchun.song@linux.dev, simon.horman@corigine.com, dlemoal@kernel.org Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, x86@kernel.org, kvm@vger.kernel.org, xen-devel@lists.xenproject.org, linux-erofs@lists.ozlabs.org, linux-f2fs-devel@lists.sourceforge.net, cluster-devel@redhat.com, linux-nfs@vger.kernel.org, linux-mtd@lists.infradead.org, rcu@vger.kernel.org, netdev@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-arm-msm@vger.kernel.org, dm-devel@redhat.com, linux-raid@vger.kernel.org, linux-bcache@vger.kernel.org, virtualization@lists.linux-foundation.org, linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org, linux-xfs@vger.kernel.org, linux-btrfs@vger.kernel.org, Qi Zheng , Muchun Song Subject: [PATCH v4 39/48] xfs: dynamically allocate the xfs-qm shrinker Date: Mon, 7 Aug 2023 19:09:27 +0800 Message-Id: <20230807110936.21819-40-zhengqi.arch@bytedance.com> X-Mailer: git-send-email 2.24.3 (Apple Git-128) In-Reply-To: <20230807110936.21819-1-zhengqi.arch@bytedance.com> References: <20230807110936.21819-1-zhengqi.arch@bytedance.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org In preparation for implementing lockless slab shrink, use new APIs to dynamically allocate the xfs-qm shrinker, so that it can be freed asynchronously using kfree_rcu(). Then it doesn't need to wait for RCU read-side critical section when releasing the struct xfs_quotainfo. Signed-off-by: Qi Zheng Reviewed-by: Muchun Song --- fs/xfs/xfs_qm.c | 28 +++++++++++++++------------- fs/xfs/xfs_qm.h | 2 +- 2 files changed, 16 insertions(+), 14 deletions(-) diff --git a/fs/xfs/xfs_qm.c b/fs/xfs/xfs_qm.c index 6abcc34fafd8..15ba23f11271 100644 --- a/fs/xfs/xfs_qm.c +++ b/fs/xfs/xfs_qm.c @@ -504,8 +504,7 @@ xfs_qm_shrink_scan( struct shrinker *shrink, struct shrink_control *sc) { - struct xfs_quotainfo *qi = container_of(shrink, - struct xfs_quotainfo, qi_shrinker); + struct xfs_quotainfo *qi = shrink->private_data; struct xfs_qm_isolate isol; unsigned long freed; int error; @@ -539,8 +538,7 @@ xfs_qm_shrink_count( struct shrinker *shrink, struct shrink_control *sc) { - struct xfs_quotainfo *qi = container_of(shrink, - struct xfs_quotainfo, qi_shrinker); + struct xfs_quotainfo *qi = shrink->private_data; return list_lru_shrink_count(&qi->qi_lru, sc); } @@ -680,15 +678,19 @@ xfs_qm_init_quotainfo( if (XFS_IS_PQUOTA_ON(mp)) xfs_qm_set_defquota(mp, XFS_DQTYPE_PROJ, qinf); - qinf->qi_shrinker.count_objects = xfs_qm_shrink_count; - qinf->qi_shrinker.scan_objects = xfs_qm_shrink_scan; - qinf->qi_shrinker.seeks = DEFAULT_SEEKS; - qinf->qi_shrinker.flags = SHRINKER_NUMA_AWARE; - - error = register_shrinker(&qinf->qi_shrinker, "xfs-qm:%s", - mp->m_super->s_id); - if (error) + qinf->qi_shrinker = shrinker_alloc(SHRINKER_NUMA_AWARE, "xfs-qm:%s", + mp->m_super->s_id); + if (!qinf->qi_shrinker) { + error = -ENOMEM; goto out_free_inos; + } + + qinf->qi_shrinker->count_objects = xfs_qm_shrink_count; + qinf->qi_shrinker->scan_objects = xfs_qm_shrink_scan; + qinf->qi_shrinker->seeks = DEFAULT_SEEKS; + qinf->qi_shrinker->private_data = qinf; + + shrinker_register(qinf->qi_shrinker); return 0; @@ -718,7 +720,7 @@ xfs_qm_destroy_quotainfo( qi = mp->m_quotainfo; ASSERT(qi != NULL); - unregister_shrinker(&qi->qi_shrinker); + shrinker_free(qi->qi_shrinker); list_lru_destroy(&qi->qi_lru); xfs_qm_destroy_quotainos(qi); mutex_destroy(&qi->qi_tree_lock); diff --git a/fs/xfs/xfs_qm.h b/fs/xfs/xfs_qm.h index 9683f0457d19..d5c9fc4ba591 100644 --- a/fs/xfs/xfs_qm.h +++ b/fs/xfs/xfs_qm.h @@ -63,7 +63,7 @@ struct xfs_quotainfo { struct xfs_def_quota qi_usr_default; struct xfs_def_quota qi_grp_default; struct xfs_def_quota qi_prj_default; - struct shrinker qi_shrinker; + struct shrinker *qi_shrinker; /* Minimum and maximum quota expiration timestamp values. */ time64_t qi_expiry_min;