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[2604:1380:45e3:2400::1]) by mx.google.com with ESMTPS id kb6-20020a170903338600b001d41eb814b8si12157095plb.149.2024.01.16.16.35.52 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 16 Jan 2024 16:35:52 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel+bounces-28241-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:45e3:2400::1 as permitted sender) client-ip=2604:1380:45e3:2400::1; Authentication-Results: mx.google.com; dkim=pass header.i=@infradead.org header.s=casper.20170209 header.b=ovkexLaj; arc=pass (i=1 dkim=pass dkdomain=infradead.org); spf=pass (google.com: domain of linux-kernel+bounces-28241-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:45e3:2400::1 as permitted sender) smtp.mailfrom="linux-kernel+bounces-28241-linux.lists.archive=gmail.com@vger.kernel.org" Received: from smtp.subspace.kernel.org (wormhole.subspace.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by sv.mirrors.kernel.org (Postfix) with ESMTPS id 8C82928C0E0 for ; Tue, 16 Jan 2024 22:10:54 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id BCA381D552; Tue, 16 Jan 2024 20:18:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="ovkexLaj" Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8A1792134E for ; Tue, 16 Jan 2024 20:18:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=90.155.50.34 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705436334; cv=none; b=aXkGVV4fyPDsAvsOW5bMIKlOZ10Z8RLvTRec30sNZnizhyfvkEFKXgJORvt6at1/wDjJkiqHeiQYgc1dq73QH7E9cbkw0MB7Zkcqf+nnvlMYmSXrlFljUnu4Wts+7OxFpl4PsiJliz/IrSskQGcJOlHdTbLSwgFBBFqVLLfPjNg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705436334; c=relaxed/simple; bh=nDQnfqFQNCOBX7B8ttUApijBb3fHn6KBN9YuCbRLIuw=; h=DKIM-Signature:Received:Date:From:To:Cc:Subject:Message-ID: References:MIME-Version:Content-Type:Content-Disposition: In-Reply-To; b=W6u5/HtP1z8hQvT0YJz/v1R2zMBwnZVHlcGWDNaDFy1TRlwhHFT1B1R3qN3MMfkUk7itDtwX+XWj22RGDX7umMrzJtCi3sipKBaPj9tdjH5JhTg23QvbvPbc37a/nIPv1ZZz5PnCKAYCcSkcg9PFt/gX/yXw7+ZmjKeQrHplxL4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org; spf=none smtp.mailfrom=infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=ovkexLaj; arc=none smtp.client-ip=90.155.50.34 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=infradead.org 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=4PyfI5MUBxjuwt0E14mP7ZWzfjXP7I7pzSpm/PoDgq4=; b=ovkexLajKKyGsgIeUVpPLoLciP 2j2hrpzQaan0nsiwLEBZliham/iItsGpco/CFv0xsUjamhuSDvTKZzukbtM3bQdF5iRyMtyJVEh/H cVthkdjjJIPuHmCbAC7p5zwhBZWTLK5PGGs2MGGprcobRlhfq2uoKkvHV0IxEfP6uZ8UOE7zwzyd4 5gmC2ZM7qpsnVpQPkg90F5yzuTbK1D9Jz9piWrLZV9wh2mIvPqYWK3i1T28EflM9dDbqLoEEf5V8p owjzfFzhjuTahSevYQ96mxiXehRGHTqzeIVwpgOwtdTRsFYHkS4THYgm5Yjech86RoGaZY/Y7IJfq dEiqC08A==; Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1rPptO-00E8lB-NW; Tue, 16 Jan 2024 20:18:38 +0000 Date: Tue, 16 Jan 2024 20:18:38 +0000 From: Matthew Wilcox To: Andrew Morton Cc: Johannes Weiner , Vlastimil Babka , Yosry Ahmed , Christoph Hellwig , Nhat Pham , Domenico Cerasuolo , konrad.wilk@oracle.com, vitaly.wool@konsulko.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] mm: kill frontswap Message-ID: References: <20230714194610.828210-1-hannes@cmpxchg.org> <20230717141250.GA866068@cmpxchg.org> <901409ed-504b-9500-54d8-e42f832e07b0@suse.cz> <20230717160227.GA867137@cmpxchg.org> <20240116120944.01f25e65d13f0fc7e2a2df34@linux-foundation.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20240116120944.01f25e65d13f0fc7e2a2df34@linux-foundation.org> On Tue, Jan 16, 2024 at 12:09:44PM -0800, Andrew Morton wrote: > On Mon, 17 Jul 2023 12:02:27 -0400 Johannes Weiner wrote: > > > The only user of frontswap is zswap, and has been for a long > > time. Have swap call into zswap directly and remove the indirection. > > This falls afoul of "mm: zswap: multiple zpools support". Could we > please have a version against mm-unstable or linux-next? Did this email get caught in a timewarp? Or is it referring to something that isn't commit 42c06a0e8ebe from six months ago?