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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 872C7C00140 for ; Wed, 10 Aug 2022 06:40:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231218AbiHJGku (ORCPT ); Wed, 10 Aug 2022 02:40:50 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43610 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229475AbiHJGkp (ORCPT ); Wed, 10 Aug 2022 02:40:45 -0400 Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.220.28]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7BEDA61127 for ; Tue, 9 Aug 2022 23:40:44 -0700 (PDT) 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 3A8BD37EA8; Wed, 10 Aug 2022 06:40:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1660113643; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=TF9qkQ4HKALrlOe0bqxeqVLGWf0XkDPHOA6absoSUU8=; b=TQ5V2ram9Sy/U/dQ1+Qi0p6rBWXsR9MFymsIcZUb/kbkfrKot57G+IMLtDM0fxGNIWk5sk 8Wx5hidMIAoOMycZx7Qn0lnD/nE/lgGheHBvjxJaPyi1URKStlQJY3kc1dc64EIE4WPxDU hUqZ1+CLW5WuXiy7N7nrfeBqbT29Hgk= 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 164DB13A7E; Wed, 10 Aug 2022 06:40:43 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id /C2RAutS82KVPgAAMHmgww (envelope-from ); Wed, 10 Aug 2022 06:40:43 +0000 Date: Wed, 10 Aug 2022 08:40:42 +0200 From: Michal Hocko To: Andrew Morton Cc: Baoquan He , Christoph Hellwig , John Donnelly , David Hildenbrand , linux-mm@kvack.org, LKML Subject: Re: [PATCH] dma/pool: do not complain if DMA pool is not allocated Message-ID: References: <20220809183252.d168b5a8be31fff5aeef1b3e@linux-foundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220809183252.d168b5a8be31fff5aeef1b3e@linux-foundation.org> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue 09-08-22 18:32:52, Andrew Morton wrote: > On Tue, 9 Aug 2022 17:37:59 +0200 Michal Hocko wrote: > > > we have a system complainging about order-10 allocation for the DMA pool. > > > > I'll add a cc:stable to this - if future users like the patch, so will > current ones! Technically speaking this is not a fix so I am not sure the stable tree is really a great fit. On the other hand I am definitely going to backport this to older SLES kernels because we have had at least 2 reports where this has been brought up for clarification. That being said, no objection from me. -- Michal Hocko SUSE Labs