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 56E35C43219 for ; Thu, 24 Feb 2022 12:48:52 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id E83EB8D0001; Thu, 24 Feb 2022 07:48:51 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id E33C88D0002; Thu, 24 Feb 2022 07:48:51 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id D56248D0001; Thu, 24 Feb 2022 07:48:51 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0104.hostedemail.com [216.40.44.104]) by kanga.kvack.org (Postfix) with ESMTP id C5A8A8D0001 for ; Thu, 24 Feb 2022 07:48:51 -0500 (EST) Received: from smtpin18.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id E0D2E8249980 for ; Thu, 24 Feb 2022 12:48:49 +0000 (UTC) X-FDA: 79177652778.18.ABFB409 Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.220.28]) by imf12.hostedemail.com (Postfix) with ESMTP id 4E69D40004 for ; Thu, 24 Feb 2022 12:48:49 +0000 (UTC) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id DD3E22114E; Thu, 24 Feb 2022 12:48:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_rsa; t=1645706927; 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=zqhrZTZ5oMSeZ6sL+jtWqsF+SeNGe07XiBRm/i340v8=; b=W/IEkVheYTm1TpUgBC3MP/XwrDGk25FJQrE39BZIn2qVaeypGIDGwJOOF+4N0bKc6tDW6Q 0Rt3E8X8i56XNJOz1r6/2BFEkzefvrueZSj7F2xRl+/AvHTOEs+JGd6Xj0NUGEn8XkklGn Yv7J1zImB3Gh3RmLKemjer0Q/vdyRNI= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_ed25519; t=1645706927; 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=zqhrZTZ5oMSeZ6sL+jtWqsF+SeNGe07XiBRm/i340v8=; b=koxjp3gascCNcj2yb8tgzez0/tw/7v9pM64qKSJvRpsN7hwmqICr44i/ZmEz6CRS5gvxnV ExQIzfjOTt/c/NBg== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id B2DCA13AD9; Thu, 24 Feb 2022 12:48:47 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id NgDoKq9+F2IkDgAAMHmgww (envelope-from ); Thu, 24 Feb 2022 12:48:47 +0000 Message-ID: <8915b858-b46d-0acd-bebd-80a0c9882a7e@suse.cz> Date: Thu, 24 Feb 2022 13:48:47 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.6.1 Content-Language: en-US To: Hyeonggon Yoo <42.hyeyoo@gmail.com>, linux-mm@kvack.org Cc: Roman Gushchin , Andrew Morton , linux-kernel@vger.kernel.org, Joonsoo Kim , David Rientjes , Christoph Lameter , Pekka Enberg , Matthew Wilcox References: <20220221105336.522086-1-42.hyeyoo@gmail.com> <20220221105336.522086-4-42.hyeyoo@gmail.com> From: Vlastimil Babka Subject: Re: [PATCH 3/5] mm/slab: Do not call kmalloc_large() for unsupported size In-Reply-To: <20220221105336.522086-4-42.hyeyoo@gmail.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 4E69D40004 X-Stat-Signature: i96rwi3j5rtfiig1a17ehgnrwyhc7ykz X-Rspam-User: Authentication-Results: imf12.hostedemail.com; dkim=pass header.d=suse.cz header.s=susede2_rsa header.b="W/IEkVhe"; dkim=pass header.d=suse.cz header.s=susede2_ed25519 header.b=koxjp3ga; spf=pass (imf12.hostedemail.com: domain of vbabka@suse.cz designates 195.135.220.28 as permitted sender) smtp.mailfrom=vbabka@suse.cz; dmarc=none X-Rspamd-Server: rspam05 X-HE-Tag: 1645706929-485778 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 2/21/22 11:53, Hyeonggon Yoo wrote: > SLAB's kfree() does not support freeing an object that is allocated from > kmalloc_large(). Fix this as SLAB do not pass requests larger than > KMALLOC_MAX_CACHE_SIZE directly to page allocator. AFAICS this issue is limited to build-time constant sizes. Might be better to make this a build error rather than build-time NULL? > Signed-off-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>