From mboxrd@z Thu Jan 1 00:00:00 1970 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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4BBFDC001DC for ; Wed, 26 Jul 2023 07:25:44 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id D9D996B0071; Wed, 26 Jul 2023 03:25:43 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id D4DFC8D0003; Wed, 26 Jul 2023 03:25:43 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id C17E88D0002; Wed, 26 Jul 2023 03:25:43 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0017.hostedemail.com [216.40.44.17]) by kanga.kvack.org (Postfix) with ESMTP id AF95F6B0071 for ; Wed, 26 Jul 2023 03:25:43 -0400 (EDT) Received: from smtpin17.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay02.hostedemail.com (Postfix) with ESMTP id 7AE2B120C2E for ; Wed, 26 Jul 2023 07:25:43 +0000 (UTC) X-FDA: 81052928166.17.1338238 Received: from out-29.mta0.migadu.com (out-29.mta0.migadu.com [91.218.175.29]) by imf18.hostedemail.com (Postfix) with ESMTP id 8E6941C0010 for ; Wed, 26 Jul 2023 07:25:41 +0000 (UTC) Authentication-Results: imf18.hostedemail.com; dkim=pass header.d=linux.dev header.s=key1 header.b=S2kua2S0; spf=pass (imf18.hostedemail.com: domain of muchun.song@linux.dev designates 91.218.175.29 as permitted sender) smtp.mailfrom=muchun.song@linux.dev; dmarc=pass (policy=none) header.from=linux.dev ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1690356341; h=from:from: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:dkim-signature; bh=zvdjs6nZtoAJTeUNZnzlMBg+3W9EeQfEjhMJc2aooOM=; b=v4VhmGgrww4s1Iu1jC/EokgZKlPCONz+I3oSFDrnBTki6NHhOp8fLKqI9QyJcw7ylPW4m/ 8gH8gJRDCBVE9T7FqTwFe1cES00sEPwMPW64gyWHqUrTy7ZdEMFrynhAy8FhFLsV+XqVw2 rWGhw4ExrF58Sjikg75+GHMdLpBsRbU= ARC-Authentication-Results: i=1; imf18.hostedemail.com; dkim=pass header.d=linux.dev header.s=key1 header.b=S2kua2S0; spf=pass (imf18.hostedemail.com: domain of muchun.song@linux.dev designates 91.218.175.29 as permitted sender) smtp.mailfrom=muchun.song@linux.dev; dmarc=pass (policy=none) header.from=linux.dev ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1690356341; a=rsa-sha256; cv=none; b=5STfleVXjcXX5YstvFBUbT1BTtqtq4AGKenPP0LrPPvCYbn1ZBDn1NNeN9qRTmL+TZctlp rtbUc+voIeooeQW/V6p/3ErlI+obO5CdaeyhHT7W+4ujCkqGznDfjJ0DfMUKh0GAzdG7Yw TfaiRGABzeQcPgopoWYLOnsv2hj2LdA= Content-Type: text/plain; charset=us-ascii DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1690356339; h=from:from: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; bh=zvdjs6nZtoAJTeUNZnzlMBg+3W9EeQfEjhMJc2aooOM=; b=S2kua2S04Evo6/UraSJyk1agL/DLGyhTxgzf2kveiPAUMLzy8KFKZaoPl72LwAbMUUU5KX yI90TImY1RmSccSZNS94f8DfCPZ1jkBAfVxRDDBOpVRhB+p5BTP1ltZuaxYaeg0c8hKX8y 9ZHbolk78fhzGoCn5zkqLPSgrNIAnzc= MIME-Version: 1.0 Subject: Re: [PATCH v2 25/47] dm: dynamically allocate the dm-bufio shrinker X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. From: Muchun Song In-Reply-To: <20230724094354.90817-26-zhengqi.arch@bytedance.com> Date: Wed, 26 Jul 2023 15:24:47 +0800 Cc: Andrew Morton , david@fromorbit.com, tkhai@ya.ru, Vlastimil Babka , Roman Gushchin , djwong@kernel.org, Christian Brauner , "Paul E. McKenney" , tytso@mit.edu, steven.price@arm.com, cel@kernel.org, senozhatsky@chromium.org, yujie.liu@intel.com, gregkh@linuxfoundation.org, 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 Content-Transfer-Encoding: 7bit Message-Id: References: <20230724094354.90817-1-zhengqi.arch@bytedance.com> <20230724094354.90817-26-zhengqi.arch@bytedance.com> To: Qi Zheng X-Migadu-Flow: FLOW_OUT X-Rspamd-Queue-Id: 8E6941C0010 X-Rspam-User: X-Stat-Signature: b3gsc46bws6fygcihfk4ag7w95ya17ra X-Rspamd-Server: rspam01 X-HE-Tag: 1690356341-950158 X-HE-Meta: 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 QPJbuluG JNh21ALTz6SBV6WpIK9ZiUa7sKF2FEZBlBry4wBwHIFIGbG1QpfnFb3A/v8HxkmtdJgaa8C/1eOuxyFOLtHxfDflYVYVqq5m7N4hOvaZ21QnHyfRfF8J0K8iZQ+/Hv9s1wIdZ423y+Crc/jFfkLA1WKvz48P+a0VJ9I0lmQlHl7iGenDDFP90NK6sBdK/GigqKUtlYL4ein3IrVwkvKTWA34qy6zanRYYLStBZI+SHR438h8uX1YY7pW4YoA5PmDnW3G7Qx2on6tsRmnEyNJCcgbhO0O4pSdClGJY55ygrbPoVt0= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: > On Jul 24, 2023, at 17:43, Qi Zheng wrote: > > In preparation for implementing lockless slab shrink, use new APIs to > dynamically allocate the dm-bufio 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 dm_bufio_client. > > Signed-off-by: Qi Zheng Reviewed-by: Muchun Song