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 lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id BE66BC35FF3 for ; Fri, 21 Mar 2025 05:14:30 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [127.0.0.1]) by lists.ozlabs.org (Postfix) with ESMTP id 4ZJrGX72R3z3091; Fri, 21 Mar 2025 16:14:28 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; arc=none smtp.remote-ip="2607:7c80:54:3::133" ARC-Seal: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1742534068; cv=none; b=PElP29+ydUDvg4rVHBywGGEQDcHJkhXoRSCCjdUEIg8wLP0IqQNueb1erXsJfSA6gT3dt9V/xqN9Xc8FLAxLhMBIIQnvxZLEVB3X6xhIHl0rx7Sl3wrxAqW9Fdpv7PnSP/I9slvsIyJzaRygSKoPKJZVcSFW3eIArYa1qZ6r9MaGwI/5lufOgajMee8R5h8jkSy+mM4A6n0YJ83GqVoNvevDC59TvsAwzgeIQUCFpIKtCCMoD/TSdHFRujxSK1L6i+FOd5M2gYt67jOor7DJRGPjr3D46AwPqG4wag+y2Jl1iOEr+oVHUrmdQ+aH9HIQq0jYOoGC9FRHO1f+/CBwBQ== ARC-Message-Signature: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1742534068; c=relaxed/relaxed; bh=rUyXpJNwMUhzMPk5QM3GkvuJrE/4O7e8Ynsm2+/B6s8=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=Dnjb1gjvDQ+n3XQyCNcah444dayxdXZTHuctjwOWgsarhUj/ET3qeqcAYMZ+7aHf9+g0oNH7hi6Yj93cOHjo9BdpfqN+cyuMFtQer+Z4178QfjfqZW1K+vdJdQTAB2HmRaYFy5MT/PCHzr5tapm+P23ZBBYofj9hmOm43QOC67Al/bvsawuvOCImw3WnK2OrJTkWFBRopJZxoAveAxz0dAfe49mKbbx2UyxaRrf7Gy1P3XSpnOfqIS5VKU9cQfZ3cgJDyoFy7HkTMqYkbUtPziS+5y4vte9WFBFkCHTLfLbevn1soEBssrU0W1eY4Qf7JlYYRLIQ4Hr5hIzvnqasvQ== ARC-Authentication-Results: i=1; lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=infradead.org; spf=none (client-ip=2607:7c80:54:3::133; helo=bombadil.infradead.org; envelope-from=batv+29b50c529b9140e130ad+7880+infradead.org+hch@bombadil.srs.infradead.org; receiver=lists.ozlabs.org) smtp.mailfrom=bombadil.srs.infradead.org Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: lists.ozlabs.org; spf=none (no SPF record) smtp.mailfrom=bombadil.srs.infradead.org (client-ip=2607:7c80:54:3::133; helo=bombadil.infradead.org; envelope-from=batv+29b50c529b9140e130ad+7880+infradead.org+hch@bombadil.srs.infradead.org; receiver=lists.ozlabs.org) Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:3::133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4ZJrGM4fLRz2yf0 for ; Fri, 21 Mar 2025 16:14:17 +1100 (AEDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; 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=rUyXpJNwMUhzMPk5QM3GkvuJrE/4O7e8Ynsm2+/B6s8=; b=Kf2KvaaYATGpCtxdSKU5/6rPCA KAkFT3eZmQAkfjf5zy7uXXS82wFhob4doB/KA+43X3dISEqyPawWkrNyBlpoZtdgWVXEmob7h9A2T INmhKDoOOCjOrjW4ZSjUvWB03s3OSD+vre15oic0+OgKkwp14Sr/g6/gqSwlMApZNHX6IiM17Op0A 0pdaXp0Ty2kdgJI3qfEyUskbjjdfeoRtb2GuSsZ2qkpEpR0MO0Y/g0FonmFmXlySGE0zWNjOhaN18 6K+0taEVWg/lI1bi9TslKaztZnjLhaXpsm7T4I+pdul/sW/3pyTjE0hNQ2c74u6nXUIlDS+1SjHRs WTlUT8bw==; Received: from hch by bombadil.infradead.org with local (Exim 4.98 #2 (Red Hat Linux)) id 1tvUhg-0000000DsHV-1Vd5; Fri, 21 Mar 2025 05:13:56 +0000 Date: Thu, 20 Mar 2025 22:13:56 -0700 From: Christoph Hellwig To: Suren Baghdasaryan Cc: akpm@linux-foundation.org, willy@infradead.org, david@redhat.com, vbabka@suse.cz, lorenzo.stoakes@oracle.com, liam.howlett@oracle.com, alexandru.elisei@arm.com, peterx@redhat.com, hannes@cmpxchg.org, mhocko@kernel.org, m.szyprowski@samsung.com, iamjoonsoo.kim@lge.com, mina86@mina86.com, axboe@kernel.dk, viro@zeniv.linux.org.uk, brauner@kernel.org, hch@infradead.org, jack@suse.cz, hbathini@linux.ibm.com, sourabhjain@linux.ibm.com, ritesh.list@gmail.com, aneesh.kumar@kernel.org, bhelgaas@google.com, sj@kernel.org, fvdl@google.com, ziy@nvidia.com, yuzhao@google.com, minchan@kernel.org, linux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org, linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org, iommu@lists.linux.dev, linux-kernel@vger.kernel.org, Minchan Kim Subject: Re: [RFC 1/3] mm: implement cleancache Message-ID: References: <20250320173931.1583800-1-surenb@google.com> <20250320173931.1583800-2-surenb@google.com> X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250320173931.1583800-2-surenb@google.com> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html On Thu, Mar 20, 2025 at 10:39:29AM -0700, Suren Baghdasaryan wrote: > Cleancache can be thought of as a page-granularity victim cache for clean Please implement your semantics directly instea of with a single user abstraction. If we ever need an abstraction we can add it once we have multiple consumers and know what they need.