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 B0971C25B06 for ; Fri, 12 Aug 2022 00:13:30 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 2DAFD6B0073; Thu, 11 Aug 2022 20:13:30 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 28A056B0075; Thu, 11 Aug 2022 20:13:30 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 179378E0001; Thu, 11 Aug 2022 20:13:30 -0400 (EDT) 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 066C46B0073 for ; Thu, 11 Aug 2022 20:13:30 -0400 (EDT) Received: from smtpin06.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay08.hostedemail.com (Postfix) with ESMTP id D6F5A14196D for ; Fri, 12 Aug 2022 00:13:29 +0000 (UTC) X-FDA: 79789016538.06.68D1A0A Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) by imf17.hostedemail.com (Postfix) with ESMTP id AF33C4018D for ; Fri, 12 Aug 2022 00:13:28 +0000 (UTC) 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=fQ9vC2pi/VnMLxKfs7fsDwoKXdaH0BL8SrGTND4+t+c=; b=tI5Fpddqw6SvhZMaF1Cu+0W27z mZHDqB2k2bDOnEixLbRKIGCvQjkT9JeNzy5H5WvKHIj8Bb2xoUE70ivKkPVL/YEkVDVkI2z/vIDIr DdWi0jS6W8GPjgjvfZBGp3tUybBasd5PegGApFwMtoz+mdvwzU6yDZK1lQddvfxDXccOLZRMKQyj7 gvQsWLOAp3X31r14W8vKHu/OUy+nP39NRP4AEvjh22kYZPazWKd4QahaN4nOyfbOw7K/PvoMsY8Bb 9gzg9XuEYDMwNIZU07O4XY0HwLuCUKX6FJe3EiZWQfylyczjCSvh+oz8gNfoIBXj/DF7oB8cVup0F Dnlwv1Yw==; Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1oMIIn-001Sde-BD; Fri, 12 Aug 2022 00:13:25 +0000 Date: Fri, 12 Aug 2022 01:13:25 +0100 From: Matthew Wilcox To: Shakeel Butt Cc: linux-mm@kvack.org Subject: Re: [PATCH v2 00/16] Allocate and free frozen pages Message-ID: References: <20220809171854.3725722-1-willy@infradead.org> <20220811001956.vll2fzea3aohhc2i@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220811001956.vll2fzea3aohhc2i@google.com> ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1660263209; 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=fQ9vC2pi/VnMLxKfs7fsDwoKXdaH0BL8SrGTND4+t+c=; b=RVHHElCtU6I2SAFz6ZtVOI0h33PLxyYWyWBG59fdrwfGQPm76qehf8nxwYrYsJDuFdxsNF Jokbq9US51xsDc10qx8eu7xHFnyLXmgyW1INEdj0IAwZBDk3C1aRBPA7Rd2YluJb0Hb4+R fllTD/n+HrS542jQ/fc9PWYxS7yMdis= ARC-Authentication-Results: i=1; imf17.hostedemail.com; dkim=pass header.d=infradead.org header.s=casper.20170209 header.b=tI5Fpddq; spf=none (imf17.hostedemail.com: domain of willy@infradead.org has no SPF policy when checking 90.155.50.34) smtp.mailfrom=willy@infradead.org; dmarc=none ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1660263209; a=rsa-sha256; cv=none; b=CvTTACOx/AJlI30i8ri6TMmb7Ioqz02isQWR+krF/vzTTlkzSm5S6hoUuv6ZHUFVhqrsBk RfxEFIUl9hZKuOM1LcEE/B94LGZaoJulxhBOe2f5V9e464rNzA1RuZGFP1SRO8rFV5Ch1t ssnIL+TgiK1Y8KJzWv3YGq/8y4DATTk= X-Stat-Signature: 4f3z5yd9q7bact5574jbnja6kccdbrb4 X-Rspamd-Queue-Id: AF33C4018D Authentication-Results: imf17.hostedemail.com; dkim=pass header.d=infradead.org header.s=casper.20170209 header.b=tI5Fpddq; spf=none (imf17.hostedemail.com: domain of willy@infradead.org has no SPF policy when checking 90.155.50.34) smtp.mailfrom=willy@infradead.org; dmarc=none X-Rspam-User: X-Rspamd-Server: rspam06 X-HE-Tag: 1660263208-933669 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000016, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Thu, Aug 11, 2022 at 12:19:56AM +0000, Shakeel Butt wrote: > On Tue, Aug 09, 2022 at 06:18:38PM +0100, Matthew Wilcox (Oracle) wrote: > [...] > > > > This patchset is also a step towards the Glorious Future in which struct > > page doesn't have a refcount; the users which need a refcount will have > > one in their per-allocation memdesc. > > > > Can you please share a bit more details about this glorious future? How > do you envision the per-allocation memdesc will work? Hopefully the 'State of the Page' email answers your questions. If not, let me know and I can go into more detail (or admit I haven't thought about the detail you're asking about).