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]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 7DF42CD8CAC for ; Tue, 9 Jun 2026 08:44:06 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 837BE6B0005; Tue, 9 Jun 2026 04:44:05 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 80F166B0088; Tue, 9 Jun 2026 04:44:05 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 74C736B008A; Tue, 9 Jun 2026 04:44:05 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0016.hostedemail.com [216.40.44.16]) by kanga.kvack.org (Postfix) with ESMTP id 648D26B0005 for ; Tue, 9 Jun 2026 04:44:05 -0400 (EDT) Received: from smtpin10.hostedemail.com (lb01a-stub [10.200.18.249]) by unirelay08.hostedemail.com (Postfix) with ESMTP id 2408E140497 for ; Tue, 9 Jun 2026 08:44:05 +0000 (UTC) X-FDA: 84859736850.10.54BAB52 Received: from verein.lst.de (verein.lst.de [213.95.11.211]) by imf11.hostedemail.com (Postfix) with ESMTP id 3A13840010 for ; Tue, 9 Jun 2026 08:44:03 +0000 (UTC) Authentication-Results: imf11.hostedemail.com; dkim=none; dmarc=pass (policy=none) header.from=lst.de; spf=pass (imf11.hostedemail.com: domain of hch@lst.de designates 213.95.11.211 as permitted sender) smtp.mailfrom=hch@lst.de ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1780994643; 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; bh=didU0eVpnw/l8EBq9zJ5F1TNzMhxrqnU6+dwxFNj6TY=; b=zW/aCewPtKdLGOkiIFtn42KFS6Qucidu0lZ6mcGbxF3L67rdUmP6yF9l+Lw88/u+pRnU9j dICwOzSTvEinGdXFt+LpQ44abc0nYFtjCPbN8Pru666lirm3fALevpAqinwYGunMvilN4p B5MfRTj1015sAaSEmppiU4+JXOIxbUQ= ARC-Authentication-Results: i=1; imf11.hostedemail.com; dkim=none; dmarc=pass (policy=none) header.from=lst.de; spf=pass (imf11.hostedemail.com: domain of hch@lst.de designates 213.95.11.211 as permitted sender) smtp.mailfrom=hch@lst.de ARC-Seal: i=1; a=rsa-sha256; d=hostedemail.com; s=arc-20220608; cv=none; t=1780994643; b=SE+1twpGXVMp7WDP7kZVwK8ercXL8FmO+dIj5Lw3bZHfCeBa01Iq42d9PyXCtCvdvD8MGP wS42PH7iDt2K1lQK088iqIWUEg+G/FLX7iBL6mLaEp6WI6c8gi/cIiEMWzhiUJ79ryQtu6 2M4LsiE9bSC9x72egvWHiMM57btctRY= Received: by verein.lst.de (Postfix, from userid 2407) id 3BAD968B05; Tue, 9 Jun 2026 10:43:59 +0200 (CEST) Date: Tue, 9 Jun 2026 10:43:59 +0200 From: Christoph Hellwig To: Nhat Pham Cc: Christoph Hellwig , baoquan.he@linux.dev, akpm@linux-foundation.org, chrisl@kernel.org, usama.arif@linux.dev, kasong@tencent.com, shikemeng@huaweicloud.com, youngjun.park@lge.com, linux-mm@kvack.org Subject: Re: [PATCH 3/8] mm/swap: introduce struct swap_io_ctx Message-ID: <20260609084359.GA11917@lst.de> References: <20260601113449.3464734-1-hch@lst.de> <20260601113449.3464734-4-hch@lst.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.17 (2007-11-01) X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: 3A13840010 X-Stat-Signature: dp3wfst6ee1kqfhuaybg5in3ywqwzak6 X-Rspam-User: X-HE-Tag: 1780994643-953095 X-HE-Meta: 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 8Mh5f9zT eSuyNgEcbFGcbdVf7xM6Ehw2QwYE9Sqn34BwdsQCQNvQtJeu+6f2FJBww4SXIJRr3s8+cL8Wusp2HclfSeIkxufpZuqgI/OmzYjrkxrOfOWuRKTUe+Yj/a2oNbNF0nT7henVss4JBc0BB6Cc= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Fri, Jun 05, 2026 at 10:41:56AM -0700, Nhat Pham wrote: [fullquote] Can you trim the parts of the mail that you are not replying to? You've quoted the entire mail without any comment on the patch, just to add a note at the end. > Note to self and other zswap folks: explore batching IO for zswap > writeback. Should be fairly simple to maintain swap_io_ctx for each > writeback round and pass it around. Yes, compression should benefit from larger chunks to work on. I think the same would also apply to zram (to respond to Chris' comment elsewhere).