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 X-Spam-Level: X-Spam-Status: No, score=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4805BC43381 for ; Fri, 22 Mar 2019 14:05:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 21DD321874 for ; Fri, 22 Mar 2019 14:05:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727961AbfCVOFs (ORCPT ); Fri, 22 Mar 2019 10:05:48 -0400 Received: from mx2.suse.de ([195.135.220.15]:39618 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727897AbfCVOFs (ORCPT ); Fri, 22 Mar 2019 10:05:48 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id D9DC4AE84; Fri, 22 Mar 2019 14:05:46 +0000 (UTC) Subject: Re: [PATCH v2 3/3] block: bio: introduce BIO_ALLOCED flag and check it in bio_free To: Christoph Hellwig , Johannes Thumshirn Cc: Jens Axboe , Bart Van Assche , Jan Kara , Linux Block Layer Mailinglist , Linux FSDEVEL Mailinglist References: <20190322131346.20169-1-jthumshirn@suse.de> <20190322131346.20169-4-jthumshirn@suse.de> <20190322140233.GC17767@lst.de> From: Hannes Reinecke Message-ID: <3ab3d268-68a7-0c23-601b-d86d26aa3936@suse.de> Date: Fri, 22 Mar 2019 15:05:46 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.5.1 MIME-Version: 1.0 In-Reply-To: <20190322140233.GC17767@lst.de> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org On 3/22/19 3:02 PM, Christoph Hellwig wrote: > Looks fine, > > Reviewed-by: Christoph Hellwig > > But how do you manage to get the tiny on-stack bios split? What kind > of setup is this? > It's not tiny if you send a 2M file via direct-io, _and_ have a non-zero MDTS setting... Cheers, Hannes -- Dr. Hannes Reinecke Teamlead Storage & Networking hare@suse.de +49 911 74053 688 SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg GF: Felix Imendörffer, Mary Higgins, Sri Rasiah HRB 21284 (AG Nürnberg)