From patchwork Thu Jul 27 08:04:52 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Qi Zheng X-Patchwork-Id: 13329678 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 9CCC4C05052 for ; Thu, 27 Jul 2023 08:30:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232941AbjG0IaX (ORCPT ); Thu, 27 Jul 2023 04:30:23 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34424 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234243AbjG0I1j (ORCPT ); Thu, 27 Jul 2023 04:27:39 -0400 Received: from mail-pf1-x430.google.com (mail-pf1-x430.google.com [IPv6:2607:f8b0:4864:20::430]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6DCC17EE9 for ; Thu, 27 Jul 2023 01:14:28 -0700 (PDT) Received: by mail-pf1-x430.google.com with SMTP id d2e1a72fcca58-686f74a8992so78434b3a.1 for ; Thu, 27 Jul 2023 01:14:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bytedance.com; s=google; t=1690445625; x=1691050425; 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=vAE6p5mA5n3yxm+4IPfXfMLc8MGv4J5wg3qHubren08=; b=dkRrWVkSv9/U3+e6QsQd29dMPuttcg2M13ZLMDEEIMbfSamBJHJdLtNY2sbEZ+YzhY 5BtYLYzutGknAA+e956eNSlbl7nK+9UwGbTk4YjZb6fHHFpCk0FXoHpJAi6M0jM7aFZF +CarAybA7Fmb9F2zoNtgG1DfzDYBp6eqgkICDj2Asy83tRT0LF5pvIpkdtR75UYStLmf 37kqliTWk9DV3Fw2NufQf0BV5/WVkKX05IEilefRJ/OwJCaH2LBTkZCCI3ZIC5RNHqLc p1thIF8tkbzc9m+CHBYGB6mtVDqiYNqHlAVUDSIfQN8XwfU9rYwJVwEXJvC3bJUByZYt Gdag== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1690445625; x=1691050425; 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=vAE6p5mA5n3yxm+4IPfXfMLc8MGv4J5wg3qHubren08=; b=BVC1DSOnUMW3Tb4eeAEvH7/l5++8fXI5LAPZzgecWTcL5ixBY6WdM+IN+ptWKucFhh +5nT/ut65wHm5YVszmAUhB6L9N0JKh7wZkOyPfJQahUGxG87vXPF5EJP4NHevOdkVKtS 4G23VZqDQ/BNLTucDZvVzgJ6FKnC7OGwPs3pCbB4K13GSpjAn3GX5xkgrl5cPX37KaGu eCypb2G88d+k+nt9ODwUFVS7Kpwzv6pqObILOVLIxt5CM3qi8tf/P5YE1MljTLVpb2xc 3KKHppk5Z+7Xrwb+/US/ErH++SB/Zp+u8TdsT4GLEZ9BB+6zQFF3xuJ1agK2CyRmWjlV +cRw== X-Gm-Message-State: ABy/qLbIIm6O7nuMBcr4uLZgD0QLy4dJGoW3G2z9srCy1hwpTzado18s PTKgdPNqSFSyYx0cR+CmxNFAqg== X-Google-Smtp-Source: APBJJlGsGKc/yd3ypxFPLcm5JieT1oixTNIsPQhWBcbXzQEArQwAQppjIOSAREcWHLbqRGZH8ALcGA== X-Received: by 2002:a05:6a20:7d87:b0:12e:f6e6:882b with SMTP id v7-20020a056a207d8700b0012ef6e6882bmr6446407pzj.1.1690445625322; Thu, 27 Jul 2023 01:13:45 -0700 (PDT) Received: from C02DW0BEMD6R.bytedance.net ([203.208.167.147]) by smtp.gmail.com with ESMTPSA id j8-20020aa78d08000000b006828e49c04csm885872pfe.75.2023.07.27.01.13.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 27 Jul 2023 01:13:44 -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 39/49] xfs: dynamically allocate the xfs-inodegc shrinker Date: Thu, 27 Jul 2023 16:04:52 +0800 Message-Id: <20230727080502.77895-40-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-inodegc 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_mount. Signed-off-by: Qi Zheng Reviewed-by: Muchun Song --- fs/xfs/xfs_icache.c | 26 +++++++++++++++----------- fs/xfs/xfs_mount.c | 4 ++-- fs/xfs/xfs_mount.h | 2 +- 3 files changed, 18 insertions(+), 14 deletions(-) diff --git a/fs/xfs/xfs_icache.c b/fs/xfs/xfs_icache.c index 453890942d9f..751c380afd5a 100644 --- a/fs/xfs/xfs_icache.c +++ b/fs/xfs/xfs_icache.c @@ -2225,8 +2225,7 @@ xfs_inodegc_shrinker_count( struct shrinker *shrink, struct shrink_control *sc) { - struct xfs_mount *mp = container_of(shrink, struct xfs_mount, - m_inodegc_shrinker); + struct xfs_mount *mp = shrink->private_data; struct xfs_inodegc *gc; int cpu; @@ -2247,8 +2246,7 @@ xfs_inodegc_shrinker_scan( struct shrinker *shrink, struct shrink_control *sc) { - struct xfs_mount *mp = container_of(shrink, struct xfs_mount, - m_inodegc_shrinker); + struct xfs_mount *mp = shrink->private_data; struct xfs_inodegc *gc; int cpu; bool no_items = true; @@ -2284,13 +2282,19 @@ int xfs_inodegc_register_shrinker( struct xfs_mount *mp) { - struct shrinker *shrink = &mp->m_inodegc_shrinker; + mp->m_inodegc_shrinker = shrinker_alloc(SHRINKER_NONSLAB, + "xfs-inodegc:%s", + mp->m_super->s_id); + if (!mp->m_inodegc_shrinker) + return -ENOMEM; + + mp->m_inodegc_shrinker->count_objects = xfs_inodegc_shrinker_count; + mp->m_inodegc_shrinker->scan_objects = xfs_inodegc_shrinker_scan; + mp->m_inodegc_shrinker->seeks = 0; + mp->m_inodegc_shrinker->batch = XFS_INODEGC_SHRINKER_BATCH; + mp->m_inodegc_shrinker->private_data = mp; - shrink->count_objects = xfs_inodegc_shrinker_count; - shrink->scan_objects = xfs_inodegc_shrinker_scan; - shrink->seeks = 0; - shrink->flags = SHRINKER_NONSLAB; - shrink->batch = XFS_INODEGC_SHRINKER_BATCH; + shrinker_register(mp->m_inodegc_shrinker); - return register_shrinker(shrink, "xfs-inodegc:%s", mp->m_super->s_id); + return 0; } diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c index fb87ffb48f7f..640d09891a4e 100644 --- a/fs/xfs/xfs_mount.c +++ b/fs/xfs/xfs_mount.c @@ -1018,7 +1018,7 @@ xfs_mountfs( out_log_dealloc: xfs_log_mount_cancel(mp); out_inodegc_shrinker: - unregister_shrinker(&mp->m_inodegc_shrinker); + shrinker_free(mp->m_inodegc_shrinker); out_fail_wait: if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) xfs_buftarg_drain(mp->m_logdev_targp); @@ -1100,7 +1100,7 @@ xfs_unmountfs( #if defined(DEBUG) xfs_errortag_clearall(mp); #endif - unregister_shrinker(&mp->m_inodegc_shrinker); + shrinker_free(mp->m_inodegc_shrinker); xfs_free_perag(mp); xfs_errortag_del(mp); diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h index e2866e7fa60c..562c294ca08e 100644 --- a/fs/xfs/xfs_mount.h +++ b/fs/xfs/xfs_mount.h @@ -217,7 +217,7 @@ typedef struct xfs_mount { atomic_t m_agirotor; /* last ag dir inode alloced */ /* Memory shrinker to throttle and reprioritize inodegc */ - struct shrinker m_inodegc_shrinker; + struct shrinker *m_inodegc_shrinker; /* * Workqueue item so that we can coalesce multiple inode flush attempts * into a single flush.