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 5CBB1E7717F for ; Thu, 12 Dec 2024 19:35:37 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id C21DC6B009D; Thu, 12 Dec 2024 14:35:36 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id BD2976B009F; Thu, 12 Dec 2024 14:35:36 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id A99C66B00A0; Thu, 12 Dec 2024 14:35:36 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0014.hostedemail.com [216.40.44.14]) by kanga.kvack.org (Postfix) with ESMTP id 89AAA6B009D for ; Thu, 12 Dec 2024 14:35:36 -0500 (EST) Received: from smtpin27.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay03.hostedemail.com (Postfix) with ESMTP id 32382A087E for ; Thu, 12 Dec 2024 19:35:36 +0000 (UTC) X-FDA: 82887310422.27.4D4BFF4 Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) by imf15.hostedemail.com (Postfix) with ESMTP id 61314A001B for ; Thu, 12 Dec 2024 19:35:03 +0000 (UTC) Authentication-Results: imf15.hostedemail.com; dkim=pass header.d=infradead.org header.s=casper.20170209 header.b=pVOoqHUQ; dmarc=none; spf=none (imf15.hostedemail.com: domain of willy@infradead.org has no SPF policy when checking 90.155.50.34) smtp.mailfrom=willy@infradead.org ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1734032122; a=rsa-sha256; cv=none; b=gEB2u6nACWfPJjZdYlvWX744HKYEKE7qEgrRnW52up4mxodpOUdhp9GAqkfr1GoCqj79f2 jM+lma/xp99uwNEYietUzuCYBhuyn41BNoZjs5FbQojuDL8+QjqklqDMN9dL1H2uJ7tajh AA7DYhUUmImr2e1YS3/182nHnycbRgQ= ARC-Authentication-Results: i=1; imf15.hostedemail.com; dkim=pass header.d=infradead.org header.s=casper.20170209 header.b=pVOoqHUQ; dmarc=none; spf=none (imf15.hostedemail.com: domain of willy@infradead.org has no SPF policy when checking 90.155.50.34) smtp.mailfrom=willy@infradead.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1734032122; 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=Z7yzPMHkmTT8PMtSrwYIaeODiYMstVNWdy5UiKGqgBw=; b=mk5LmsLoRGlxvgY3iklpIT18fENgbdMmgRPCiDVe41SpgfP1/Pq9ZSi9w0RCEGDd/dofwr wi+cxmid4JJeLTTAN6g+hlYpqWynLGirQqKueOg2Y5Bij2fjm0pGPqS6Fc8Bi6k5qtfWAr 9vj9JDtPzlVd11ANAFH6r/8qxuum+xE= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.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; bh=Z7yzPMHkmTT8PMtSrwYIaeODiYMstVNWdy5UiKGqgBw=; b=pVOoqHUQ7Zt5Qsg9jSa9F5UTf/ kpuW1kEPD71IH1+6jg/JcsyLGEJWTephj249UVVONq/H6AwnTzqTOy5fgI2logcAZFVxTi+jNx5Fl l9iKkz24J0ePCSdcLrIV2rd5uQFMaARprRnfyRQxlHQ09oGsPxqsIuBZP9hGt/k/+/E3cEc3+cT9v XJ4+17CDPv+vtcPXwlc/N0F3QnPl+IknzVzbC0BiqRw627FVPFaQv29Cy0qfV7f1uN6VzrkgpQsh4 8brp/R0pvJC/AI/QWpbxkF7eNHXMykSdgHH5bAJnAinsaZB3MMXoy5k1HFpG4isAhAiFJAVoO6awn p4TD5owg==; Received: from willy by casper.infradead.org with local (Exim 4.98 #2 (Red Hat Linux)) id 1tLoy8-00000007ga1-2emw; Thu, 12 Dec 2024 19:35:28 +0000 Date: Thu, 12 Dec 2024 19:35:28 +0000 From: Matthew Wilcox To: Jens Axboe Cc: "Christoph Lameter (Ampere)" , 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, kirill@shutemov.name, bfoster@redhat.com Subject: Re: [PATCHSET v6 0/12] Uncached buffered IO Message-ID: 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> <2f79ff03-48ee-54bf-b928-e9519b3edfc7@gentwo.org> <383d3adc-e939-44b2-9110-4db9b4477401@kernel.dk> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <383d3adc-e939-44b2-9110-4db9b4477401@kernel.dk> X-Rspam-User: X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: 61314A001B X-Stat-Signature: nnnyphdhobz8ofow6fg5p8n5crhersxu X-HE-Tag: 1734032103-185015 X-HE-Meta: U2FsdGVkX19PjZZn1bfBKBar2ClEG5hBVDtHspN/iogi2zjcZbsWD4J4AjkaxNtmzMpFsWoSBvLuARf5rbP/XwYKsoY2NHSjaxSaa+RC/3o5QRTYpRVD1ooZd/mhrxVvdS00GZgh5N2H6bzhYAsET0PndHMcZeqUMHGFZgiqFb+m7wEo7mkkF9xQlnYgp44IlTYYAvRpUJ0OhkXpmJ1Vvz8WEMxh6gsh0lezqH9Pya/avBv7aGpmhxI4YgVXHRJbfGXrFfZBptJ6o9ILH/BwQktBBWDnBhqOW6PzJN4wvVM196W6vGBJWfZ9AmoYcoKrkdyII/OsXQUVM9CmpVG0bFItuSd28yTzuvQnjksv+JTlclp9tzFxT/wcfq/MX/SbDbcInO1aQL/6Z9InTIDR7fDDzql2jnBbNlbep+vkeeqapwY/I4qWEWh8D3aBH5bUWLvOoByybMaEr1vKJJeblEaZNqhzCXffzA6mcpYVhYrk3yTDEEwDpwVa33HEKdUAmJmDXLrongpl4A9CqlRybNOgQsGqVZkc0/xI95btRem8I/thkinV3442yMk+k3AI914JIgR83+HV0LjPeCv90aplfudiWCqigKPnpt5ZGle158ySMmAfwAOtX4phDkExhK4jHFa+RLUKXNxyW0srFfbAHrAS7aF5ZdZ3Wz+0tdTeZ1WAaOUEmtp0cocOGMRBJDYjO5eRPLCIYXiuKhXP7P4RMxUIxlEc7ih70oCksowBmrUzjnu4aQR+KDWRl3wJp0WlpcOKC+7b2RFiN0QQJ73WS+5uhyX6lP16s90PPobT68YHP/JGIX3O+Ydh4/w23l4ZG4TL8szw1kwKmYgsuKtUSqizYqM4PJMwXCvcEuACse7kPLHN/kVEjgOkMEg74B6k/avBSdU92i+Mg5Cl1mN/Ko1QcDGvnp57FkFqFIXTURdz82IBy/bgxiJoWSRtyZNATPP9SwXAXkdKIeT VQs7s6nx 1SyI+tiKGIeKG/72dxZro3cPmWkOBdUXJkJjct3nuGDgz+Y2SbaqSsSbMP8eWsqZEkDsSHjCq2/evZF9u1NudIfSVZnrfn01pWe6MGzZ+2e9NaV6XdLEPNMuYNQxFxFipl8bkXZtj83o0g5iopnPCJoNrm889WJfELsLPqNe5gya4Y/jEnqLQke/p8zy2A7865IM5l1fmDbvTfJQqM+pag/Qd4efQe+K7MOKJJQzXTYvHxLrgCqKvBTsk39IlQHAoVghz 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, Dec 12, 2024 at 12:14:23PM -0700, Jens Axboe wrote: > Like I mentioned earlier, the fact that it's cached for the duration of > the operation is more of an implementation detail that developers need > not worry about. What's important is that it's not cached AFTER. I still > feel UNCACHED is the best description, but I'll change it to DONTCACHE > for the next version just to avoid the overlap with other in-kernel > uses. Regardless of the user API name, I like PG_streaming for the folio flag name.