From patchwork Thu Jul 27 08:04:53 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Qi Zheng X-Patchwork-Id: 13329677 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 28CF8C001DC for ; Thu, 27 Jul 2023 08:30:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234246AbjG0Ia0 (ORCPT ); Thu, 27 Jul 2023 04:30:26 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34848 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234068AbjG0I1s (ORCPT ); Thu, 27 Jul 2023 04:27:48 -0400 Received: from mail-pf1-x431.google.com (mail-pf1-x431.google.com [IPv6:2607:f8b0:4864:20::431]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C910383C8 for ; Thu, 27 Jul 2023 01:14:37 -0700 (PDT) Received: by mail-pf1-x431.google.com with SMTP id d2e1a72fcca58-686f6231bdeso113893b3a.1 for ; Thu, 27 Jul 2023 01:14:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bytedance.com; s=google; t=1690445637; x=1691050437; 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=wkWZ9/xaCXa97bQ5JXnZc5xW9B3SNGrJMT1hKcCw6ws=; b=EDfCdETq+fWum4Z4rVmLJcfO1jsg67VgnqiA/czndVSbNlSpbiLUxCCQQbrycQZD4N jQ6ZzEztmrAV1/GQh0DPbs4MerEzMqTN5oUJT+1JgEVVCAFedy/wmgVhs7WN/b/b654/ J3bWoofyGEQUeJzT2evHimB9xJj54scgZA3ezNM1eyl//hvUHn6qW8m2jc5RxZ9Q53pq qjYZmev8IqT72hXdHUOA71yDJ6nyeNuVcIJzjtWGkynPPHPpyqKgHAKZWC3Im8l22hhd 2mNa6yYVElvUfcaQGhKZMnwewb3KL70R9vxxm9ctoitBRKZ5V08UPUQRdkaKB4nkVDWK NCpQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1690445637; x=1691050437; 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=wkWZ9/xaCXa97bQ5JXnZc5xW9B3SNGrJMT1hKcCw6ws=; b=Z1eqqKan6AgxFCuwp9mjlTc67ekthvHWeJqFwG2R7t0Uuc60m99IvP3dofWoNGLxiF xJjOGGFd9tRpJvFvJpuIk1p8r+Xffph4oPI7HG8lH5Zl4YeJuHgp4U3Xo4nPoo/tarVu fEXOBa3KTuKYnjRUuGKQnhBlElZAPfXlgW/4mOX+T6s0MGJvSEGuefIZyZqs4ZvLSAty 5XZuvB++vUzVUpIDCSbgDUVX2okAwXGC/4Fm+qeyMP8n5AP8wRfWfDOaKeYu8rI6PjSW 8zG9wuL51QrdZNlcnQpbHKWQisrra5ecFBFX3bOfNgYIm52mEkmgysUXauQxVE+splhp uDsg== X-Gm-Message-State: ABy/qLb55rFOoc7sPptwvZPLpEJ1A51t6d8crKtlzLZUUJ2NCm4IB5w5 DU8YWDvKjX39SRYDBKE7zgxtNg== X-Google-Smtp-Source: APBJJlHv3kehM44VAWCca2syD2CKM7i434EcumRqZh5gO/U3rxv+9ZnIssQP5Ien17rj+O8gWl3H0Q== X-Received: by 2002:a05:6a00:1586:b0:67f:8ef5:2643 with SMTP id u6-20020a056a00158600b0067f8ef52643mr5213351pfk.2.1690445637383; Thu, 27 Jul 2023 01:13:57 -0700 (PDT) Received: from C02DW0BEMD6R.bytedance.net ([203.208.167.147]) by smtp.gmail.com with ESMTPSA id j8-20020aa78d08000000b006828e49c04csm885872pfe.75.2023.07.27.01.13.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 27 Jul 2023 01:13:57 -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 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 v3 40/49] xfs: dynamically allocate the xfs-qm shrinker Date: Thu, 27 Jul 2023 16:04:53 +0800 Message-Id: <20230727080502.77895-41-zhengqi.arch@bytedance.com> X-Mailer: git-send-email 2.24.3 (Apple Git-128) In-Reply-To: <20230727080502.77895-1-zhengqi.arch@bytedance.com> References: <20230727080502.77895-1-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 | 26 +++++++++++++------------- fs/xfs/xfs_qm.h | 2 +- 2 files changed, 14 insertions(+), 14 deletions(-) diff --git a/fs/xfs/xfs_qm.c b/fs/xfs/xfs_qm.c index 6abcc34fafd8..032f0a208bd2 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); } @@ -680,16 +678,18 @@ 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) 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; out_free_inos: @@ -718,7 +718,7 @@ 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;