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=-2.3 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_MUTT 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 C48F4C43441 for ; Mon, 19 Nov 2018 08:16:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8CB1C20823 for ; Mon, 19 Nov 2018 08:16:36 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="eCIhBO8u" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8CB1C20823 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org 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 S1726793AbeKSSj2 (ORCPT ); Mon, 19 Nov 2018 13:39:28 -0500 Received: from bombadil.infradead.org ([198.137.202.133]:39544 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726687AbeKSSj2 (ORCPT ); Mon, 19 Nov 2018 13:39:28 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=In-Reply-To:Content-Type:MIME-Version :References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=43hosCMGn5wAThspCegz3neUNX8VDol+4NHWMZDreoE=; b=eCIhBO8utpUW26EIYJfwn5CXC 13MFP0Cbry/LipltvnEnga4DA/M4Ay/eXtOyvwE/D88IM6ft6oMA58NAhTqYdPb2h+Sdly9zd+J0S n3V10DLh3zlpB7ZZdK85bGwjeaveLgLRWAUDszaGrql3CmNxn3CMxCF3XA3WxRtFtO+vX9EoDndor QKlwxgtUwjualzgK1qgNzQ+n0SD6ymrJcWcZxiI8yTZhpx9z561TEZTs+wpM+ByKlzAE6Zmq6YXIe dq7l7Dl9cZ22DxkJRcccC98TBTTJtrWK+tLRJp7FpKJHa6nGCLoBpl30nyELYSyqBgU64nCbYF2jo Pn1MvaH3A==; Received: from hch by bombadil.infradead.org with local (Exim 4.90_1 #2 (Red Hat Linux)) id 1gOejT-00021g-CO; Mon, 19 Nov 2018 08:16:35 +0000 Date: Mon, 19 Nov 2018 00:16:35 -0800 From: Christoph Hellwig To: Damien Le Moal Cc: linux-block@vger.kernel.org, Jens Axboe , Adam Manzanares , Alexander Viro , linux-fsdevel@vger.kernel.org Subject: Re: [PATCH 3/7] block: Fix get_task_ioprio() default return value Message-ID: <20181119081635.GN9622@infradead.org> References: <20181119035131.11255-1-damien.lemoal@wdc.com> <20181119035131.11255-4-damien.lemoal@wdc.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20181119035131.11255-4-damien.lemoal@wdc.com> User-Agent: Mutt/1.9.2 (2017-12-15) X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org On Mon, Nov 19, 2018 at 12:51:27PM +0900, Damien Le Moal wrote: > As explained in ioprio_get() and ionice man pages, the default I/O > priority class for processes which have not set an I/O priority using > ioprio_set() is IOPRIO_CLASS_BE and not IOPRIO_CLASS_NONE. While this matches the documentation, we've returned the current values for 10 years, and before that plain 0 without any ioprio magic. It might be safer to just fix the documentation.