From patchwork Mon Aug 7 11:09:03 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Qi Zheng X-Patchwork-Id: 13345777 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 us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id DD0FCC05051 for ; Tue, 8 Aug 2023 06:53:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1691477635; h=from:from:sender:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:list-id:list-help: list-unsubscribe:list-subscribe:list-post; bh=UdjFixFHZMxHCYBeYft0ocZnbQNIjAXI23h9cVSkMzI=; b=UTf3tTGpFkJ1dW4KGg3sST8FGqkkXS2LIxA8klxGpuD94z9DnsNkSCpdTfohfWqhZIRFNQ fAN0jGs4JmWOUyLjo+fMPT2iWsuR/+FiN98JcHeoRm7DVqENG+6Lh+mOB4xrLJzsd8xK+9 lel14o/f8yVEIMg2RIeII2t04WbS8ho= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-320-w_24ATpMMFC9wPn4_YZyRQ-1; Tue, 08 Aug 2023 02:53:50 -0400 X-MC-Unique: w_24ATpMMFC9wPn4_YZyRQ-1 Received: from smtp.corp.redhat.com (int-mx10.intmail.prod.int.rdu2.redhat.com [10.11.54.10]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 91A22823E0B; Tue, 8 Aug 2023 06:53:37 +0000 (UTC) Received: from mm-prod-listman-01.mail-001.prod.us-east-1.aws.redhat.com (unknown [10.30.29.100]) by smtp.corp.redhat.com (Postfix) with ESMTP id 7AD1D403169; Tue, 8 Aug 2023 06:53:37 +0000 (UTC) Received: from mm-prod-listman-01.mail-001.prod.us-east-1.aws.redhat.com (localhost [IPv6:::1]) by mm-prod-listman-01.mail-001.prod.us-east-1.aws.redhat.com (Postfix) with ESMTP id 2B64119465A3; Tue, 8 Aug 2023 06:53:34 +0000 (UTC) Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) by mm-prod-listman-01.mail-001.prod.us-east-1.aws.redhat.com (Postfix) with ESMTP id C84871946586 for ; Mon, 7 Aug 2023 11:13:14 +0000 (UTC) Received: by smtp.corp.redhat.com (Postfix) id A7547440C7; Mon, 7 Aug 2023 11:13:14 +0000 (UTC) Received: from mimecast-mx02.redhat.com (mimecast01.extmail.prod.ext.rdu2.redhat.com [10.11.55.17]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 9FAC61759C for ; Mon, 7 Aug 2023 11:13:14 +0000 (UTC) Received: from us-smtp-1.mimecast.com (us-smtp-2.mimecast.com [207.211.31.81]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 67AB88019CC for ; Mon, 7 Aug 2023 11:13:14 +0000 (UTC) Received: from mail-pf1-f173.google.com (mail-pf1-f173.google.com [209.85.210.173]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-611-f-xXOrV1MjKe1yNqw2LeAw-1; Mon, 07 Aug 2023 07:13:12 -0400 X-MC-Unique: f-xXOrV1MjKe1yNqw2LeAw-1 Received: by mail-pf1-f173.google.com with SMTP id d2e1a72fcca58-686f6231bdeso1246278b3a.1 for ; Mon, 07 Aug 2023 04:13:12 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1691406791; x=1692011591; 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=urGrhHBCGKwKuhIkQmOHRuysXuy1mToQA+AaHWoY6PY=; b=X3VJp4YzCnkOc5t5muSslJYCWccR3F2CCFVA/jG53raP5hyCKWo5WODwcfC8thF3qt lDMH5+Rf7IWknQaSN7L4crdSCzwxOEaIN4tE68+RkwxoeDJ204D98Uaui45KCY6l8yOE a0zWR2XYH/qQQOK2XrYaZ6gqLReHlargoiYiVwfoptWRo9DlceAl8+cRWiOHu4YrorBE JIfiHcWJETl45T/ZcuCKsDZU3cpE3Dy7FkHNKkt97b/8kYC3rudZGrWOzs+Hh7oCgN/s rN2UfxAa4ISjva8ttFMQ7V1yZ6m966/Pb2+AYhCSv2Wnmjy9qvr4fJOz//mh1MTVcrNK 9law== X-Gm-Message-State: ABy/qLYeJECljp93Jz7+Pq7npek4c3L4ZH09s3CCdcgy2NgEwOQuHlIe vka7M1ZVt4P6kqAeQBNvc1WQPA== X-Google-Smtp-Source: APBJJlGG9fl/KZM7Wu/aB3nA3qPBXzAgCls0ii/X4UboFM2rQSd7zbDq190u8vBbdPOZ8QFUsdy1lw== X-Received: by 2002:a17:90a:faf:b0:268:abc:83d5 with SMTP id 44-20020a17090a0faf00b002680abc83d5mr23478200pjz.4.1691406791204; Mon, 07 Aug 2023 04:13:11 -0700 (PDT) Received: from C02DW0BEMD6R.bytedance.net ([203.208.167.146]) by smtp.gmail.com with ESMTPSA id y13-20020a17090aca8d00b0025be7b69d73sm5861191pjt.12.2023.08.07.04.12.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 07 Aug 2023 04:13:10 -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 Date: Mon, 7 Aug 2023 19:09:03 +0800 Message-Id: <20230807110936.21819-16-zhengqi.arch@bytedance.com> In-Reply-To: <20230807110936.21819-1-zhengqi.arch@bytedance.com> References: <20230807110936.21819-1-zhengqi.arch@bytedance.com> MIME-Version: 1.0 X-Mimecast-Impersonation-Protect: Policy=CLT - Impersonation Protection Definition; Similar Internal Domain=false; Similar Monitored External Domain=false; Custom External Domain=false; Mimecast External Domain=false; Newly Observed Domain=false; Internal User Name=false; Custom Display Name List=false; Reply-to Address Mismatch=false; Targeted Threat Dictionary=false; Mimecast Threat Dictionary=false; Custom Threat Dictionary=false X-Scanned-By: MIMEDefang 3.1 on 10.11.54.5 X-Mailman-Approved-At: Tue, 08 Aug 2023 06:53:24 +0000 Subject: [dm-devel] [PATCH v4 15/48] nfsd: dynamically allocate the nfsd-filecache shrinker X-BeenThere: dm-devel@redhat.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: device-mapper development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kvm@vger.kernel.org, dri-devel@lists.freedesktop.org, virtualization@lists.linux-foundation.org, linux-mm@kvack.org, dm-devel@redhat.com, linux-mtd@lists.infradead.org, x86@kernel.org, cluster-devel@redhat.com, xen-devel@lists.xenproject.org, linux-ext4@vger.kernel.org, linux-arm-msm@vger.kernel.org, rcu@vger.kernel.org, linux-bcache@vger.kernel.org, Qi Zheng , Muchun Song , linux-raid@vger.kernel.org, linux-nfs@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-erofs@lists.ozlabs.org, linux-btrfs@vger.kernel.org Errors-To: dm-devel-bounces@redhat.com Sender: "dm-devel" X-Scanned-By: MIMEDefang 3.1 on 10.11.54.10 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: bytedance.com Use new APIs to dynamically allocate the nfsd-filecache shrinker. Signed-off-by: Qi Zheng Reviewed-by: Muchun Song --- fs/nfsd/filecache.c | 23 +++++++++++++---------- 1 file changed, 13 insertions(+), 10 deletions(-) diff --git a/fs/nfsd/filecache.c b/fs/nfsd/filecache.c index ee9c923192e0..9c62b4502539 100644 --- a/fs/nfsd/filecache.c +++ b/fs/nfsd/filecache.c @@ -521,11 +521,7 @@ nfsd_file_lru_scan(struct shrinker *s, struct shrink_control *sc) return ret; } -static struct shrinker nfsd_file_shrinker = { - .scan_objects = nfsd_file_lru_scan, - .count_objects = nfsd_file_lru_count, - .seeks = 1, -}; +static struct shrinker *nfsd_file_shrinker; /** * nfsd_file_cond_queue - conditionally unhash and queue a nfsd_file @@ -746,12 +742,19 @@ nfsd_file_cache_init(void) goto out_err; } - ret = register_shrinker(&nfsd_file_shrinker, "nfsd-filecache"); - if (ret) { - pr_err("nfsd: failed to register nfsd_file_shrinker: %d\n", ret); + nfsd_file_shrinker = shrinker_alloc(0, "nfsd-filecache"); + if (!nfsd_file_shrinker) { + ret = -ENOMEM; + pr_err("nfsd: failed to allocate nfsd_file_shrinker\n"); goto out_lru; } + nfsd_file_shrinker->count_objects = nfsd_file_lru_count; + nfsd_file_shrinker->scan_objects = nfsd_file_lru_scan; + nfsd_file_shrinker->seeks = 1; + + shrinker_register(nfsd_file_shrinker); + ret = lease_register_notifier(&nfsd_file_lease_notifier); if (ret) { pr_err("nfsd: unable to register lease notifier: %d\n", ret); @@ -774,7 +777,7 @@ nfsd_file_cache_init(void) out_notifier: lease_unregister_notifier(&nfsd_file_lease_notifier); out_shrinker: - unregister_shrinker(&nfsd_file_shrinker); + shrinker_free(nfsd_file_shrinker); out_lru: list_lru_destroy(&nfsd_file_lru); out_err: @@ -891,7 +894,7 @@ nfsd_file_cache_shutdown(void) return; lease_unregister_notifier(&nfsd_file_lease_notifier); - unregister_shrinker(&nfsd_file_shrinker); + shrinker_free(nfsd_file_shrinker); /* * make sure all callers of nfsd_file_lru_cb are done before * calling nfsd_file_cache_purge