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 2EF31C0015E for ; Wed, 26 Jul 2023 07:26:51 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id BF08D8D0001; Wed, 26 Jul 2023 03:26:50 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id BA1676B0074; Wed, 26 Jul 2023 03:26:50 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id A693F8D0001; Wed, 26 Jul 2023 03:26:50 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0013.hostedemail.com [216.40.44.13]) by kanga.kvack.org (Postfix) with ESMTP id 99B1F6B0071 for ; Wed, 26 Jul 2023 03:26:50 -0400 (EDT) Received: from smtpin04.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay07.hostedemail.com (Postfix) with ESMTP id 4F467160B8D for ; Wed, 26 Jul 2023 07:26:50 +0000 (UTC) X-FDA: 81052930980.04.5260C62 Received: from out-49.mta0.migadu.com (out-49.mta0.migadu.com [91.218.175.49]) by imf08.hostedemail.com (Postfix) with ESMTP id 5B20F160003 for ; Wed, 26 Jul 2023 07:26:47 +0000 (UTC) Authentication-Results: imf08.hostedemail.com; dkim=pass header.d=linux.dev header.s=key1 header.b="UA4cvi/G"; spf=pass (imf08.hostedemail.com: domain of muchun.song@linux.dev designates 91.218.175.49 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=1690356407; 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=x/YPwJU0rwLy+AuHnuxjdCUhH1EzE6WkopZ0kgAJ1Qo=; b=zdL5ME7UD/ObZohdSeoao+vx0FJe+6vldpOCk8lfF14/7aHYGBDKxq+NOshwFhqCM2VoxR 4//DrPQBEW36TsPgcE6NoakRGvtD3SedGNUG+dCJD1bR2kxuT0HRsnMwCR3zqfnJMXflL8 8fV6tF+evRpkFVxqbpaURnWYndMGvXw= ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1690356407; a=rsa-sha256; cv=none; b=IO2qow+l9IdXne7EVTDHKs32+RSFcxWFme+9lNdWeGLHF9n/WBV2Ej6v4ONWIUkDOpa8CD dn5AKaN4zC2TOfdFrHcMbEudw/GTu3ZW1W55gjAdFMtFrzNKjbhyZ9XccFn3t5BnrzFF2P EnJqKOuTNi5t5nmtPn+/LDSSzrs/200= ARC-Authentication-Results: i=1; imf08.hostedemail.com; dkim=pass header.d=linux.dev header.s=key1 header.b="UA4cvi/G"; spf=pass (imf08.hostedemail.com: domain of muchun.song@linux.dev designates 91.218.175.49 as permitted sender) smtp.mailfrom=muchun.song@linux.dev; dmarc=pass (policy=none) header.from=linux.dev Content-Type: text/plain; charset=us-ascii DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1690356405; 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=x/YPwJU0rwLy+AuHnuxjdCUhH1EzE6WkopZ0kgAJ1Qo=; b=UA4cvi/GGMdckJQ6g4p3+u38P404cT3MaC3q014wQwvll1a4nrZdfsP6/l2xBOvqxQBZnG /GB100BFGEJn37pYrEcJWPkcPwCehM0mCMv1erArHez8P+wU/wx/xg2YNYRHWyz7GvCoJN LWY2Z8xIEtpCzuJK57wk7wbFhJGlyYE= MIME-Version: 1.0 Subject: Re: [PATCH v2 26/47] dm zoned: dynamically allocate the dm-zoned-meta shrinker X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. From: Muchun Song In-Reply-To: <20230724094354.90817-27-zhengqi.arch@bytedance.com> Date: Wed, 26 Jul 2023 15:25:47 +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> <20230724094354.90817-27-zhengqi.arch@bytedance.com> To: Qi Zheng X-Migadu-Flow: FLOW_OUT X-Rspamd-Queue-Id: 5B20F160003 X-Rspam-User: X-Rspamd-Server: rspam11 X-Stat-Signature: hfb9k1q7ozs847ix3po4hha4znamex4h X-HE-Tag: 1690356407-308724 X-HE-Meta: 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 OvR/guGJ GLMvNZ9nJjgqZmOGCLS+fhZ4Fn9WSySidc0ug8Ki9e0IbPtq0Zx9piLV/aakgAFJzhgcMkXLLK78b4nHdkxVAjboe3zIapDjnCp/W3G2roNCDMkKrdeKgNu5OEbEQPnQ9/e/Hbz+lArncmeXDubk1ODvMlJpzzlCZxAsqd0aZ68wIFY5F2oeu4WgWSBkaiOrKMuTfB1ZDARHiCqn6CFcNgUgInrAhqZ3hyYwbRHYZzUxAx6Dvg/AmLGea1Aqlgp/VsIvL/4mVgePWx0MON+PFJUJYRoRsgZPi5sGfWXgWhJWGpa4= 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-zoned-meta 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 dmz_metadata. > > Signed-off-by: Qi Zheng Reviewed-by: Muchun Song