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 AFF57C46CA1 for ; Mon, 18 Sep 2023 07:24:44 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 4C9D16B026D; Mon, 18 Sep 2023 03:24:44 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 47A7C6B026E; Mon, 18 Sep 2023 03:24:44 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 369136B026F; Mon, 18 Sep 2023 03:24:44 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0014.hostedemail.com [216.40.44.14]) by kanga.kvack.org (Postfix) with ESMTP id 27CC16B026D for ; Mon, 18 Sep 2023 03:24:44 -0400 (EDT) Received: from smtpin08.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay03.hostedemail.com (Postfix) with ESMTP id F40ECA0C33 for ; Mon, 18 Sep 2023 07:24:43 +0000 (UTC) X-FDA: 81248880846.08.70D2D5E Received: from out-219.mta0.migadu.com (out-219.mta0.migadu.com [91.218.175.219]) by imf30.hostedemail.com (Postfix) with ESMTP id 367FA8001B for ; Mon, 18 Sep 2023 07:24:41 +0000 (UTC) Authentication-Results: imf30.hostedemail.com; dkim=pass header.d=linux.dev header.s=key1 header.b=jZXsCrbp; spf=pass (imf30.hostedemail.com: domain of muchun.song@linux.dev designates 91.218.175.219 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=1695021882; 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=zzzC/B353RosUdr7fwJlfSV65TSyTW3V9hwKh5E4O4k=; b=sNV5t2KoX0c51VfPZzJs1yCvscVuhsO9YYKE0CjoTwAJbpnH/jstlZKQg56MKJCfcRjYOs MrzZJiYpb1P1DhCG1mZmYcK4+ClKW1r8txHx83lOZ3OiNrk9YX53kzo8DPm8iqDsOUEJyS SIdBiN+K4jIkuaaIQg0cfmv1n6jDjUI= ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1695021882; a=rsa-sha256; cv=none; b=ZAythmQyn++BjsDxjZPCadDZpxuJmpH/XBd3mZr86d/0PgEwYoGaCmIOVvtacsNMyc/8ay JQB0iXdVhWwPycIUKoXVi5ismDXSNzm3TyT0GwPXC/KXWA1ILE90jeq7712Q1MzLNiQkxs nRTKtDUNvcn32fW9zLHIIZN7FRCQclE= ARC-Authentication-Results: i=1; imf30.hostedemail.com; dkim=pass header.d=linux.dev header.s=key1 header.b=jZXsCrbp; spf=pass (imf30.hostedemail.com: domain of muchun.song@linux.dev designates 91.218.175.219 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=1695021880; 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=zzzC/B353RosUdr7fwJlfSV65TSyTW3V9hwKh5E4O4k=; b=jZXsCrbpQ31M3u4AouhIh8fx/kKsqnynLkBX3kPobIDV2fkF+8cF/AELK8bdy7XofUFC/j hLWKSH8/jVq3ewpIPhflQB+eBi1kw2mIuk17I3Bf1NWRPgrDy1HN1qD5f/ToTe2ottPVgb +cEseA4Gw/DnycGQ/PMNMeTgdirdfZs= Mime-Version: 1.0 Subject: Re: [PATCH v6 26/45] bcache: dynamically allocate the md-bcache shrinker X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. From: Muchun Song In-Reply-To: <20230911094444.68966-27-zhengqi.arch@bytedance.com> Date: Mon, 18 Sep 2023 15:24:02 +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, Sergey Senozhatsky , yujie.liu@intel.com, Greg KH , LKML , Linux-MM , linux-fsdevel@vger.kernel.org, Coly Li , Kent Overstreet , linux-bcache@vger.kernel.org Content-Transfer-Encoding: 7bit Message-Id: References: <20230911094444.68966-1-zhengqi.arch@bytedance.com> <20230911094444.68966-27-zhengqi.arch@bytedance.com> To: Qi Zheng X-Migadu-Flow: FLOW_OUT X-Stat-Signature: zokcca51qkn5fne5qobq3pmz9uabc7at X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: 367FA8001B X-Rspam-User: X-HE-Tag: 1695021881-985003 X-HE-Meta: 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 N3dXfvj9 Z6cVrnulceiyivN5FWrZ6gonJx4AfzNicwx1XXV6hyiLbVYgjKmRTcw2vh5KGUlar0xIvz26EO6RY8+ZAhVgiv6fayY9P6b++UggNz1ND6RNsiTzm3fUEoMYnwYu5EkhdDtQpjA7ZuGIkqhnmciuClZffFjiIMxdSSYeRikxGT7jSnn7qqpaDMmL70TaCBt6SPUVBKeKCttff8m83kUH77ZYRiBLraHCjCeohlxinZIbe2N2EV0zoEQEyrwfF/x6eg39n15t56JDasOrybDRGpxGg9yjz8Q9Lv7DN 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 Sep 11, 2023, at 17:44, Qi Zheng wrote: > > In preparation for implementing lockless slab shrink, use new APIs to > dynamically allocate the md-bcache shrinker, so that it can be freed > asynchronously via RCU. Then it doesn't need to wait for RCU read-side > critical section when releasing the struct cache_set. > > Signed-off-by: Qi Zheng Acked-by: Muchun Song Thanks.