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=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,T_DKIMWL_WL_MED, 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 E3800C07E85 for ; Fri, 7 Dec 2018 19:35:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A3CE320673 for ; Fri, 7 Dec 2018 19:35:29 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=kernel-dk.20150623.gappssmtp.com header.i=@kernel-dk.20150623.gappssmtp.com header.b="dyt3a3Eh" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A3CE320673 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=kernel.dk Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-block-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726041AbeLGTf3 (ORCPT ); Fri, 7 Dec 2018 14:35:29 -0500 Received: from mail-io1-f68.google.com ([209.85.166.68]:36216 "EHLO mail-io1-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726045AbeLGTf2 (ORCPT ); Fri, 7 Dec 2018 14:35:28 -0500 Received: by mail-io1-f68.google.com with SMTP id m19so4188021ioh.3 for ; Fri, 07 Dec 2018 11:35:27 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20150623.gappssmtp.com; s=20150623; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=K4l7L3ZNooP4lgmIIi4OTHswBDQz9mJFgir2ZJPB+iI=; b=dyt3a3EhJiTu31+BNukr/NdVc1Gr3C9TBQ85XpnxQ/vte31UnCpHoPXOHixiwWQ/5+ bbTupeXPW1Jb9A2EY8Shn5lLTXNkjW+C+9f6SwtG+ndu+bZHMIC+rKKnsKP5/rGtSC0Q r2tjxsn3BGiw+kk3bQXvBlsk51QXroHgwZYuz2ps4EUVNor06r3G9XCd4fmrGCUlq1iM EOJ2vME64jogyvIaN7y4EFrQRk5iDlu8uZMT2+VDrRHYC5S8Xdh0VrMsRtg4kNUrTpN3 fEE8WUcAbOWQ6ALAdoq5T9QukwyR7/g9RpILxy1w+Tp1dvxZCyzXmynviGfyjyFYbKxR f+hA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=K4l7L3ZNooP4lgmIIi4OTHswBDQz9mJFgir2ZJPB+iI=; b=LudSmHVDadkxdVqiUG+3+uHZsYuSL71IuoA+/dvCbhVCOeAA6+u3oY5Vt+WkfYkwt3 Ua73e76+1/wVOsMjWbhliTJg4QayopG7wiFsJ+RfIA33opl2sacDFE7YRU56Jkp3cH4c ccgzcmwS9qLR1xOAciq/TsFxePlUs831L2iDxWS6wdWd1ubR7sciDz0T6r2J/Ipp0iXY 6AsSpchTMm30sXTq2WUTiIPAfDmvnp46Wj2Ve+cuxUECCsXl5tW8v9EuXwLbwJC8+NZq sXg7WuXe2oT9sIK3G31cdqr/PhxZz4lcesPtBAgduEPGSYoULkesFgeJ5fWRvRMTyD99 w4ng== X-Gm-Message-State: AA+aEWZ3SsOkD8T6VkT4S6YEf98CSJwRWEXLCHhAnwIRQ08PqTiPqDhV b/M5eazG5b2+1GZ5FF6RMmDVEA== X-Google-Smtp-Source: AFSGD/VxCWlFG2EbVYmmj/5rTYqbCkqh4TkZq/1pwD4zdSPWhUXc+fU9J1F8u75Apzg5/74NNFWq1w== X-Received: by 2002:a6b:38c3:: with SMTP id f186mr2703082ioa.186.1544211327407; Fri, 07 Dec 2018 11:35:27 -0800 (PST) Received: from [192.168.1.56] ([216.160.245.98]) by smtp.gmail.com with ESMTPSA id r15sm1674067ioh.12.2018.12.07.11.35.25 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 07 Dec 2018 11:35:26 -0800 (PST) Subject: Re: [PATCHSET v5] Support for polled aio To: Jeff Moyer Cc: linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-aio@kvack.org, hch@lst.de References: <20181204233729.26776-1-axboe@kernel.dk> <4bf3dfe4-b157-88b6-f9a3-60ad1f76328a@kernel.dk> <9747f14b-8361-08c0-5a1f-d4f26509083e@kernel.dk> From: Jens Axboe Message-ID: <650ef685-0727-aaf4-aff5-adf11c06f3fa@kernel.dk> Date: Fri, 7 Dec 2018 12:35:25 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.2.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org On 12/7/18 12:34 PM, Jeff Moyer wrote: > Jens Axboe writes: > >> BTW, quick guess is that it doesn't work so well with fixed buffers, as that >> hasn't been tested. You could try and remove IOCTX_FLAG_FIXEDBUFS from the >> test program and see if that works. > > That results in a NULL pointer dereference. I'll stick to block device > testing for now. :) Good plan :-) -- Jens Axboe