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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 69DB5C433F5 for ; Tue, 4 Jan 2022 14:31:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234220AbiADOb1 (ORCPT ); Tue, 4 Jan 2022 09:31:27 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:28234 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234182AbiADOb0 (ORCPT ); Tue, 4 Jan 2022 09:31:26 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1641306685; h=from:from: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:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=PSbFiIkCa7pMhGDthWmAfMNT0dx4lGgrz3BAfDoZH5c=; b=JnEIsbCTr22Sa5c6cNYIhBUQ62oGMMX6jMl/cLMplqh0yvDk/5RtQx09Hk7ZdQB9K3edaE Z0GkrYVN33Pr+IGratkg4TbMngLrDjwuXFaPVkXhAP4dAre857JA4EwkQVDTfvP8Kp8Jy4 BvrGyB5bxdK+upTw5enAjyIiIilNA/Q= Received: from mail-wm1-f71.google.com (mail-wm1-f71.google.com [209.85.128.71]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-644-Ga6OhM20P5-3yp9XFRLVIg-1; Tue, 04 Jan 2022 09:31:24 -0500 X-MC-Unique: Ga6OhM20P5-3yp9XFRLVIg-1 Received: by mail-wm1-f71.google.com with SMTP id x21-20020a05600c21d500b00345a25ea8cfso365008wmj.5 for ; Tue, 04 Jan 2022 06:31:24 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:message-id:date:mime-version:user-agent:subject :content-language:to:cc:references:from:organization:in-reply-to :content-transfer-encoding; bh=PSbFiIkCa7pMhGDthWmAfMNT0dx4lGgrz3BAfDoZH5c=; b=Vs0b2vZlglzG4VVy9rtAssK7md0XBJv6bqN1SRqpfRCbL18lmDje/pzV77RHVy2OSN 7ME8grFNVGVL1OtXDj/tapzB7XKcEYknZzlfZvImiBE0FsgRFnq2dh5HxXyiQzPTBVHC 1Zcwi0jPJBRpkiuZ7TnrQvCVEFN+HsVSdhDhIC/rzEGNlHN51JrqJibA69EqerEf2Ucv ML2QxTxRQHu60ShGupjEuLIlDAXhUNFfzf95ZAhrJTQcyaDaq5TeEwLHAiC44PSB6ANt o5UEk0yRlh75S/WCcVt1Dgvcj2i32WQiQ5QPQjsnPiHNsocWXUwTHJ1pA0e/qykIRqOA Ltmg== X-Gm-Message-State: AOAM533V1p0nZwsg2c8Dn0YX2BQ9C1WZ9gN2gG4YgspEomKz5c/7DEMh uiiiUijb2arasYFzj1wM6RUBW2hnFhkerJh/j43wZ6BVQ0CrB57ap/TLuR9AnLmEKEDdqDNPSLs shbT/lVZAlQZZa34mFZFEZSCt X-Received: by 2002:a1c:2b42:: with SMTP id r63mr35437017wmr.80.1641306682489; Tue, 04 Jan 2022 06:31:22 -0800 (PST) X-Google-Smtp-Source: ABdhPJzoD394cIAvWOPJzX1c3qieoiNBQSBerEgc05mgXT5JV6oRQFZPfL/TP84Ze3JTIZi6PiROVQ== X-Received: by 2002:a1c:2b42:: with SMTP id r63mr35437000wmr.80.1641306682335; Tue, 04 Jan 2022 06:31:22 -0800 (PST) Received: from [192.168.3.132] (p5b0c62bd.dip0.t-ipconnect.de. [91.12.98.189]) by smtp.gmail.com with ESMTPSA id a2sm43078904wri.17.2022.01.04.06.31.21 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 04 Jan 2022 06:31:21 -0800 (PST) Message-ID: <10ec73d4-6658-4f60-abe1-84ece53ca373@redhat.com> Date: Tue, 4 Jan 2022 15:31:20 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.4.0 Subject: Re: remove Xen tmem leftovers Content-Language: en-US To: Christoph Hellwig , Andrew Morton , Konrad Rzeszutek Wilk Cc: Hugh Dickins , Seth Jennings , Dan Streetman , Vitaly Wool , Matthew Wilcox , linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org References: <20211224062246.1258487-1-hch@lst.de> From: David Hildenbrand Organization: Red Hat In-Reply-To: <20211224062246.1258487-1-hch@lst.de> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 24.12.21 07:22, Christoph Hellwig wrote: > Hi all, > > since the remove of the Xen tmem driver in 2019, the cleancache hooks are > entirely unused, as are large parts of frontswap. This series against > linux-next (with the folio changes included) removes cleancaches, and cuts > down frontswap to the bits actually used by zswap. > Just out of curiosity, why was tmem removed from Linux (or even Xen?). Do you have any information? Happy to see this cleanup. -- Thanks, David / dhildenb