From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ed1-f67.google.com ([209.85.208.67]:43372 "EHLO mail-ed1-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727044AbeJKCQg (ORCPT ); Wed, 10 Oct 2018 22:16:36 -0400 Subject: Re: [PATCH] blk: optimization for classic polling To: Nitesh Shetty , linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk Cc: linux-block@vger.kernel.org, axboe@fb.com, linux-nvme@lists.infradead.org, joshi.k@samsung.com References: <3578876466-3733-1-git-send-email-nj.shetty@samsung.com> From: Florian Fainelli Message-ID: <6425d6fc-59d7-7ea0-487f-bb5d0985653c@gmail.com> Date: Wed, 10 Oct 2018 11:52:57 -0700 MIME-Version: 1.0 In-Reply-To: <3578876466-3733-1-git-send-email-nj.shetty@samsung.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-fsdevel-owner@vger.kernel.org List-ID: On 05/29/2083 08:21 PM, Nitesh Shetty wrote: > This removes the dependency on interrupts to wake up task. Set task > state as TASK_RUNNING, if need_resched() returns true, > while polling for IO completion. > Earlier, polling task used to sleep, relying on interrupt to wake it up. > This made some IO take very long when interrupt-coalescing is enabled in > NVMe. > > Reference: > http://lists.infradead.org/pipermail/linux-nvme/2018-February/015435.html > Signed-off-by: Nitesh Shetty There is something seriously wrong with the date on your computer, this patch is dated from May 29th 2083,... I would not be surprised if it messed up people's email client and you did not get any response because of that... -- Florian