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=-4.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS autolearn=no 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 E1501C433E1 for ; Fri, 7 Aug 2020 03:24:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CF5F322D06 for ; Fri, 7 Aug 2020 03:24:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1596770680; bh=RJ45wmBMUe6xMFzcXJs/9JOy6dpvl3djVMKZygZP1Qo=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=V5+y4HNFnEMggK2rQzNDjlp5Brqe+F/EwXzt0HINWXZV7dVq12CxLOJGJwDFw531s Y03QFAQqAF9ChFgoizWCiZGP21plA5cq5ZeabmF3k/XGUiL5vZt96t8iiejKUW0KRZ WWEKA8FgPexjp+lT4Zmp5nl8QzMf6Pmw+e4tZLz8= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726055AbgHGDYk (ORCPT ); Thu, 6 Aug 2020 23:24:40 -0400 Received: from mail.kernel.org ([198.145.29.99]:54906 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726027AbgHGDYk (ORCPT ); Thu, 6 Aug 2020 23:24:40 -0400 Received: from dhcp-10-100-145-180.wdl.wdc.com (unknown [199.255.45.60]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 5C74F2086A; Fri, 7 Aug 2020 03:24:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1596770679; bh=RJ45wmBMUe6xMFzcXJs/9JOy6dpvl3djVMKZygZP1Qo=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=fKvJ5629uOx3/4USbh2KBTLx0IFNwPWsKczU2D3AB2s6uA0sIR4ev3ywWiQtZetW+ +BaK800siqWDrWSPRFAnEFctfcNeGQZxgsSk1s4bDOliDv58KSFXMZgVUnvpPABOP9 wKj7K6mDwrJ3DXDfKv0qQCCUgV/ET0CDuo/IqCtc= Date: Thu, 6 Aug 2020 20:24:37 -0700 From: Keith Busch To: Bart Van Assche Cc: linux-block@vger.kernel.org, Jens Axboe , Eric Deal , stable@vger.kernel.org Subject: Re: [PATCH] block: fix get_max_io_size() Message-ID: <20200807032437.GC3797376@dhcp-10-100-145-180.wdl.wdc.com> References: <20200806215837.3968445-1-kbusch@kernel.org> <88d4db76-b912-8987-cfac-a2b926fbfe3d@acm.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org On Thu, Aug 06, 2020 at 06:25:50PM -0700, Bart Van Assche wrote: > This should work better than what was mentioned in my previous email: > > - return sectors & (lbs - 1); > + return sectors; It used to be something like that. There were some situations where it didn't work, which brought d0e5fbb01a67e, but I think the real problem was from mismatched queue_limits, which I think I addressed with 5f009d3f8e668, so maybe this is okay now.