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 DB3A8C021B8 for ; Wed, 26 Feb 2025 15:45:00 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 782D528000F; Wed, 26 Feb 2025 10:45:00 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 70B7C280002; Wed, 26 Feb 2025 10:45:00 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 585A728000F; Wed, 26 Feb 2025 10:45:00 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0012.hostedemail.com [216.40.44.12]) by kanga.kvack.org (Postfix) with ESMTP id 3B158280002 for ; Wed, 26 Feb 2025 10:45:00 -0500 (EST) Received: from smtpin03.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay09.hostedemail.com (Postfix) with ESMTP id B444F81740 for ; Wed, 26 Feb 2025 15:44:59 +0000 (UTC) X-FDA: 83162519118.03.565943E Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.223.131]) by imf19.hostedemail.com (Postfix) with ESMTP id 2E7DD1A001B for ; Wed, 26 Feb 2025 15:44:56 +0000 (UTC) Authentication-Results: imf19.hostedemail.com; dkim=pass header.d=suse.cz header.s=susede2_rsa header.b=YkCGpM5I; dkim=pass header.d=suse.cz header.s=susede2_ed25519 header.b=KLEXvqrj; dkim=pass header.d=suse.cz header.s=susede2_rsa header.b=YkCGpM5I; dkim=pass header.d=suse.cz header.s=susede2_ed25519 header.b=KLEXvqrj; spf=pass (imf19.hostedemail.com: domain of vbabka@suse.cz designates 195.135.223.131 as permitted sender) smtp.mailfrom=vbabka@suse.cz; dmarc=none ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1740584697; 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=WT/e1NPqFVPRk0VeexpY3gu2bFX/ah2sTyCgZLZp0Ds=; b=rUekjxrFyGt89UV8g2YKOX7X297r+UX0Kc6zMXElnr85dUcD8EMgOY8pQgWd7CCl0R1XZk YbpwdshX22kZTmZ+u0PnM8m9WfGsCEj7XwvNWQJ6Q3lmcb42Lwcr7fraRZNNRoeSUOTVTx GiW0UUtCIMWukdEjpUEgNSgSqSUSDBs= ARC-Authentication-Results: i=1; imf19.hostedemail.com; dkim=pass header.d=suse.cz header.s=susede2_rsa header.b=YkCGpM5I; dkim=pass header.d=suse.cz header.s=susede2_ed25519 header.b=KLEXvqrj; dkim=pass header.d=suse.cz header.s=susede2_rsa header.b=YkCGpM5I; dkim=pass header.d=suse.cz header.s=susede2_ed25519 header.b=KLEXvqrj; spf=pass (imf19.hostedemail.com: domain of vbabka@suse.cz designates 195.135.223.131 as permitted sender) smtp.mailfrom=vbabka@suse.cz; dmarc=none ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1740584697; a=rsa-sha256; cv=none; b=vklina1NnqKs0zHgejiRdEOczgNc9zHsYVQ2IafEaoBQrVnQpJfkK4/yoTlAkFnRv9L8nk KH5nQal4eX/M3V1RYKHKbRwLPAOEwA6abC+K1Ox79fD8kIWsmisTZon2qrMbsl2LUV3vjO t2SWjFcwiByZ2B5uZu8g/ufV/jBV8eE= Received: from imap1.dmz-prg2.suse.org (imap1.dmz-prg2.suse.org [IPv6:2a07:de40:b281:104:10:150:64:97]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by smtp-out2.suse.de (Postfix) with ESMTPS id 23D841F387; Wed, 26 Feb 2025 15:44:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_rsa; t=1740584695; h=from:from:reply-to: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=WT/e1NPqFVPRk0VeexpY3gu2bFX/ah2sTyCgZLZp0Ds=; b=YkCGpM5I9acZohiD9dnyxFl64Ab+0li8mwf7b2KvVBM3/w/f0Z577nF1/U6vroigXHI9Iu NgYQhfqnbhQrHt+K4a07w8DF2wS/yJXcptwRqYcn8SBRgJQ37jEoBthT/Zp/1CSqFKpswN +LSKgt5zFDI07eUh2eHHTHvtGP/bv50= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_ed25519; t=1740584695; h=from:from:reply-to: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=WT/e1NPqFVPRk0VeexpY3gu2bFX/ah2sTyCgZLZp0Ds=; b=KLEXvqrjK4dGTbjFTELtm2VMerhUVC1+n+Vg9iuvEAcR9oQSRRAKM3xyqksiCHjvva9lW0 wDlMwmC/O/lo+RCA== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_rsa; t=1740584695; h=from:from:reply-to: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=WT/e1NPqFVPRk0VeexpY3gu2bFX/ah2sTyCgZLZp0Ds=; b=YkCGpM5I9acZohiD9dnyxFl64Ab+0li8mwf7b2KvVBM3/w/f0Z577nF1/U6vroigXHI9Iu NgYQhfqnbhQrHt+K4a07w8DF2wS/yJXcptwRqYcn8SBRgJQ37jEoBthT/Zp/1CSqFKpswN +LSKgt5zFDI07eUh2eHHTHvtGP/bv50= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_ed25519; t=1740584695; h=from:from:reply-to: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=WT/e1NPqFVPRk0VeexpY3gu2bFX/ah2sTyCgZLZp0Ds=; b=KLEXvqrjK4dGTbjFTELtm2VMerhUVC1+n+Vg9iuvEAcR9oQSRRAKM3xyqksiCHjvva9lW0 wDlMwmC/O/lo+RCA== Received: from imap1.dmz-prg2.suse.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by imap1.dmz-prg2.suse.org (Postfix) with ESMTPS id 0020413A53; Wed, 26 Feb 2025 15:44:54 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id xn9bO/Y2v2e0XwAAD6G6ig (envelope-from ); Wed, 26 Feb 2025 15:44:54 +0000 Message-ID: <8899bfa5-bd8b-4d34-a149-40f30d12cb1e@suse.cz> Date: Wed, 26 Feb 2025 16:46:38 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 6/7] mm, slab: call kvfree_rcu_barrier() from kmem_cache_destroy() To: Uladzislau Rezki Cc: Keith Busch , "Paul E. McKenney" , Joel Fernandes , Josh Triplett , Boqun Feng , Christoph Lameter , David Rientjes , Steven Rostedt , Mathieu Desnoyers , Lai Jiangshan , Zqiang , Julia Lawall , Jakub Kicinski , "Jason A. Donenfeld" , Andrew Morton , Roman Gushchin , Hyeonggon Yoo <42.hyeyoo@gmail.com>, linux-mm@kvack.org, linux-kernel@vger.kernel.org, rcu@vger.kernel.org, Alexander Potapenko , Marco Elver , Dmitry Vyukov , kasan-dev@googlegroups.com, Jann Horn , Mateusz Guzik , linux-nvme@lists.infradead.org, leitao@debian.org References: <2811463a-751f-4443-9125-02628dc315d9@suse.cz> <8d7aabb2-2836-4c09-9fc7-8bde271e7f23@suse.cz> <93f03922-3d3a-4204-89c1-90ea4e1fc217@suse.cz> From: Vlastimil Babka Content-Language: en-US In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspamd-Action: no action X-Rspam-User: X-Rspamd-Server: rspam11 X-Rspamd-Queue-Id: 2E7DD1A001B X-Stat-Signature: eqg7xmzhiispdd4nux6z4dsurnuni59m X-HE-Tag: 1740584696-186654 X-HE-Meta: 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 9zmVUI+u 0EmWISmQu0S1STBGtgAB1tbZ3mksM9CXfC9gJ/kKJeiQNWJ2V1BmoLu+oqN4/CxL60dbItbHaHghyknRsrlTqLdS7dfjML42bI7eYC8aWBpk+vWF2ZuMJpUPPMHrtodEsoGpMqY+Uqbsg1PJF2PkhHLqi/XQZDY4PrvrA95qz4mKM+akCQRE2ycD8cE3OOQsQexCYSPwAmYJnB9yzPvjYkScxNTXU+ZJCo0uiD66tiJJyjD9KguINW6NaJXb4Dv8ne81QkMGC09ZoOHXVtYhR39vIAMJWgKyUAWUntwdCAPzsUNeGTcHJOXS1uNW8KwCeYdlIOyTNU49BB3t06KwwpAK0B80Xx7BQdX3mPYmwbfY92wjuSx7wmLFCSj+jvDjYDKFmSVOIk+puWW4r/LNnsDEdyw== 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: List-Subscribe: List-Unsubscribe: On 2/26/25 4:42 PM, Uladzislau Rezki wrote: > On Wed, Feb 26, 2025 at 03:36:39PM +0100, Vlastimil Babka wrote: >> On 2/26/25 3:31 PM, Uladzislau Rezki wrote: >>> On Wed, Feb 26, 2025 at 11:59:53AM +0100, Vlastimil Babka wrote: >>>> On 2/25/25 7:21 PM, Uladzislau Rezki wrote: >>>>>> >>>>> WQ_MEM_RECLAIM-patch fixes this for me: >>>> >>>> Sounds good, can you send a formal patch then? >>>> >>> Do you mean both? Test case and fix? I can :) >> >> Sure, but only the fix is for stable. Thanks! >> > It is taken by Gregg if there is a Fixes tag in the commit. > What do you mean: the fix is for stable? The current Linus > tree is not suffering from this? I just meant the fix should be a Cc: stable, and the testcase not. mm/ has an exception from "anything with Fixes: can be taken to stable" > > -- > Uladzislau Rezki