From nobody Thu Sep 11 22:30:17 2025 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 DB613CA0ED1 for ; Mon, 11 Sep 2023 22:43:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1377690AbjIKW2I (ORCPT ); Mon, 11 Sep 2023 18:28:08 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57876 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235956AbjIKJrJ (ORCPT ); Mon, 11 Sep 2023 05:47:09 -0400 Received: from mail-pg1-x530.google.com (mail-pg1-x530.google.com [IPv6:2607:f8b0:4864:20::530]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C0688E4E for ; Mon, 11 Sep 2023 02:47:05 -0700 (PDT) Received: by mail-pg1-x530.google.com with SMTP id 41be03b00d2f7-573e931433aso439088a12.1 for ; Mon, 11 Sep 2023 02:47:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bytedance.com; s=google; t=1694425625; x=1695030425; darn=vger.kernel.org; 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=X/NLyvMhlfztd4qbZrL/omLXYwwIYQMNFU1MSKt3KHU=; b=Zqk0q2lHhsVpuwpvzxLmqDK85EddZO8tAvV9tjuY21Xw/Z1aa10y81Za8Qqt8MOuBB x44f++KfDbCQVSjuqPLm2TpsvHjLYaesf8mLnpCQYMDOjMtLRjJWbVf2MWdzyT+k2cPK adkJv8CBZmKv2q8cRKgIjuk1K/0HE2ai/W0GJQJE0rxobPA/ofN3Bh1pQAIDe9cZ3meH l+OORyEtbDJ9uJgL7NkEzSfWANGl7PdtearjDTwOVQHgQT7//KrkVoH5OKP26QrnDVVk 9SQzoIIms4udo7F2Z3mkuQ5ch2aOUfUxrWcU8aLxV7tLli2T3MHA3EDVj55Hks2UKEJY +/Xg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1694425625; x=1695030425; 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=X/NLyvMhlfztd4qbZrL/omLXYwwIYQMNFU1MSKt3KHU=; b=cMGc+nQ/0Dz9ZNgkX4l+xuc4C6WtwCbh1eSBxCT3XZm3844AiLQS2ywoaPkXndoSdz TGCT6HFYmExB02LbDq8hqo3ze5VxgsIXUFmpSbKtxiyA+PRJF9mFaLTXRqxFEcJ0ohtN Dnn83Ux0JYCNbm7M6yF3rQx1nIS9azbdbYIyrc7nacAX0C8mFb/PvHsxAjBOEL2ACOkl sBbkNnan7Of33UIUou9M90MAGzkVatQz+ab6EJflFW4W5eh+trrOn5MNWz5+D1rDNY8Z jvVxxIV7KdmNlkTwdjhJQJFQLcriJhDpMyMKualCoL4fe2/Uc+GmJYtw/6rETiS/8drT WP8Q== X-Gm-Message-State: AOJu0YxWXAJkfKUfy758YWNHUD2TuUqBV0uqwLsr9n8MN4+v+5c9Qq+z jbUxNvB/hwF8cO0wjBjAXOE/KA== X-Google-Smtp-Source: AGHT+IGDEIcfsclwcXdbuDvH8sZ7NfMus7y6m3aPNdiNFM1+TgiFCKX9tglqgiD/ZZx6tB1zl6Vfxw== X-Received: by 2002:a05:6a21:a587:b0:123:3ec2:360d with SMTP id gd7-20020a056a21a58700b001233ec2360dmr13693947pzc.5.1694425625285; Mon, 11 Sep 2023 02:47:05 -0700 (PDT) Received: from C02DW0BEMD6R.bytedance.net ([203.208.167.146]) by smtp.gmail.com with ESMTPSA id az7-20020a170902a58700b001bdc2fdcf7esm5988188plb.129.2023.09.11.02.46.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 11 Sep 2023 02:47:04 -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, linux-fsdevel@vger.kernel.org, Qi Zheng , Muchun Song , Jan Kara Subject: [PATCH v6 13/45] quota: dynamically allocate the dquota-cache shrinker Date: Mon, 11 Sep 2023 17:44:12 +0800 Message-Id: <20230911094444.68966-14-zhengqi.arch@bytedance.com> X-Mailer: git-send-email 2.24.3 (Apple Git-128) In-Reply-To: <20230911094444.68966-1-zhengqi.arch@bytedance.com> References: <20230911094444.68966-1-zhengqi.arch@bytedance.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Use new APIs to dynamically allocate the dquota-cache shrinker. Signed-off-by: Qi Zheng Reviewed-by: Muchun Song Acked-by: Jan Kara --- fs/quota/dquot.c | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-) diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c index 9e72bfe8bbad..15030b0cd1c8 100644 --- a/fs/quota/dquot.c +++ b/fs/quota/dquot.c @@ -791,12 +791,6 @@ dqcache_shrink_count(struct shrinker *shrink, struct s= hrink_control *sc) percpu_counter_read_positive(&dqstats.counter[DQST_FREE_DQUOTS])); } =20 -static struct shrinker dqcache_shrinker =3D { - .count_objects =3D dqcache_shrink_count, - .scan_objects =3D dqcache_shrink_scan, - .seeks =3D DEFAULT_SEEKS, -}; - /* * Safely release dquot and put reference to dquot. */ @@ -2956,6 +2950,7 @@ static int __init dquot_init(void) { int i, ret; unsigned long nr_hash, order; + struct shrinker *dqcache_shrinker; =20 printk(KERN_NOTICE "VFS: Disk quotas %s\n", __DQUOT_VERSION__); =20 @@ -2990,8 +2985,14 @@ static int __init dquot_init(void) pr_info("VFS: Dquot-cache hash table entries: %ld (order %ld," " %ld bytes)\n", nr_hash, order, (PAGE_SIZE << order)); =20 - if (register_shrinker(&dqcache_shrinker, "dquota-cache")) - panic("Cannot register dquot shrinker"); + dqcache_shrinker =3D shrinker_alloc(0, "dquota-cache"); + if (!dqcache_shrinker) + panic("Cannot allocate dquot shrinker"); + + dqcache_shrinker->count_objects =3D dqcache_shrink_count; + dqcache_shrinker->scan_objects =3D dqcache_shrink_scan; + + shrinker_register(dqcache_shrinker); =20 return 0; } --=20 2.30.2