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 Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 35479E7717F for ; Thu, 12 Dec 2024 16:59:16 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 8EBBB6B0085; Thu, 12 Dec 2024 11:59:15 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 89C486B0088; Thu, 12 Dec 2024 11:59:15 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 78A4D6B0089; Thu, 12 Dec 2024 11:59:15 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0013.hostedemail.com [216.40.44.13]) by kanga.kvack.org (Postfix) with ESMTP id 5D23E6B0085 for ; Thu, 12 Dec 2024 11:59:15 -0500 (EST) Received: from smtpin24.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay04.hostedemail.com (Postfix) with ESMTP id DAB281A04E4 for ; Thu, 12 Dec 2024 16:59:14 +0000 (UTC) X-FDA: 82886916714.24.CDFEC10 Received: from gentwo.org (gentwo.org [62.72.0.81]) by imf30.hostedemail.com (Postfix) with ESMTP id 4864280012 for ; Thu, 12 Dec 2024 16:58:26 +0000 (UTC) Authentication-Results: imf30.hostedemail.com; dkim=pass header.d=gentwo.org header.s=default header.b=mBG5Lml7; dmarc=pass (policy=reject) header.from=gentwo.org; spf=pass (imf30.hostedemail.com: domain of cl@gentwo.org designates 62.72.0.81 as permitted sender) smtp.mailfrom=cl@gentwo.org ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1734022730; a=rsa-sha256; cv=none; b=Vx837GimN2bMTc3TkY6djOAwrd30GRxkucXcMC2YhYLThsambVUwSm76MiP1MYdXUeYzPI cEGsJ+ciQRCWRm2ZWdUoJFW4v/3l0N758TryS9aBpLH6VpB6noYpunKN8irYhFxIWIl98Z z2cMax/AVM5JZMYk8hASixAeeQhhqNs= ARC-Authentication-Results: i=1; imf30.hostedemail.com; dkim=pass header.d=gentwo.org header.s=default header.b=mBG5Lml7; dmarc=pass (policy=reject) header.from=gentwo.org; spf=pass (imf30.hostedemail.com: domain of cl@gentwo.org designates 62.72.0.81 as permitted sender) smtp.mailfrom=cl@gentwo.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1734022730; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=FcDZ4cUvdimRFMnCKV8AG51FhyvlFKXlgsvLWzv9PaE=; b=PAO3FxQqEfzET6RGP8NXSgmwm2dJNTSzKGbkOFjyL8gQBjgf3yQ7x4XxbMrYC3v0aJrepE 9J4yZYRa4ZGPZMpKgBnYvtQJc7h7CmvWD2qAJThaBeovvDJYzPq+IGP0RCeIWFywQtm753 itbynnUehPk+Q8kQfFE4IRLeCA1/wp0= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gentwo.org; s=default; t=1734022751; bh=BL7BBjJaNhrAlT5QrscsxpVfzBSAe+uykL7b6/KyTcY=; h=Date:From:To:cc:Subject:In-Reply-To:References:From; b=mBG5Lml7HJtK4c1BUb2gu7vTEaIx0JsCrKEusawKm2t1dS24KoC/NpaKQc0vDRppD aHJ+T0K95oZeA/VKalqE0SuK74cwmAITkZaLE1v5QAmEL+JFvMo2i49gUaaBKkkIVY AeifUehhDnQ59coArstVsV39QGqnYwjYpZUCsDCQ= Received: by gentwo.org (Postfix, from userid 1003) id C874C401F4; Thu, 12 Dec 2024 08:59:11 -0800 (PST) Received: from localhost (localhost [127.0.0.1]) by gentwo.org (Postfix) with ESMTP id C5E6D401C4; Thu, 12 Dec 2024 08:59:11 -0800 (PST) Date: Thu, 12 Dec 2024 08:59:11 -0800 (PST) From: "Christoph Lameter (Ampere)" To: Jens Axboe cc: Christoph Hellwig , "Darrick J. Wong" , linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, hannes@cmpxchg.org, clm@meta.com, linux-kernel@vger.kernel.org, willy@infradead.org, kirill@shutemov.name, bfoster@redhat.com Subject: Re: [PATCHSET v6 0/12] Uncached buffered IO In-Reply-To: <04e11417-cf68-4014-a7f7-e51392352e9d@kernel.dk> Message-ID: <2f79ff03-48ee-54bf-b928-e9519b3edfc7@gentwo.org> References: <20241203153232.92224-2-axboe@kernel.dk> <668f271f-dc44-49e1-b8dc-08e65e1fec23@kernel.dk> <36599cce-42ba-ddfb-656f-162548fdb300@gentwo.org> <20241204055241.GA7820@frogsfrogsfrogs> <04e11417-cf68-4014-a7f7-e51392352e9d@kernel.dk> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII X-Stat-Signature: yck7baj5cnr8szkso3os43k9s77one8i X-Rspam-User: X-Rspamd-Queue-Id: 4864280012 X-Rspamd-Server: rspam08 X-HE-Tag: 1734022706-871671 X-HE-Meta: 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 kyh9d/nO DA8Mt7TvkCPv4ittG5/MDoXYoI25ZnbV8Y/fVtNp3RmdtBRdOvpu60YNljXXGXZULC01U1l9wHN69jp22zlXtiigU+SOmC46u0WN37UWDckot9e/goA1YYaR2RCz7euUyyuHRuQoTi7tnHqUlqYHLlbjXYN1ZsXR6JL80IphgjmzSMLdgFOUhmWIQvHZe3gfg5Nx2TNLuYq0TQYg= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Thu, 12 Dec 2024, Jens Axboe wrote: > On 12/10/24 4:11 AM, Christoph Hellwig wrote: > > On Tue, Dec 03, 2024 at 09:52:41PM -0800, Darrick J. Wong wrote: > >> RWF_DONTCACHE, to match {I,DCACHE}_DONTCACHE ? ;) > >> > >> They sound pretty similar ("load this so I can do something with it, > >> evict it immediately if possible") though I wouldn't rely on people > >> outside the kernel being familiar with the existing dontcaches. > > > > FYI, another word for dontcache. uncached just has too many conotations > > in the kernel context. > > Sure, we can go with DONTCACHE instead. Only thing I don't like about > that is that you can use uncached as a verb and adjective, eg talking > about uncached IO. Talking about dontcached IO sounds pretty weird. > > As I've said previously in this and other threads, I don't feel too > strongly about the in-kernel naming, I care more about the exposed > name. And uncached does seem to be the most descriptive and most > easily understandable by users. The page is cached while the operation is ongoing. "Transitory" would be more accurate and it is a new term that was not used with pages before.