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 B09ADCD4F21 for ; Wed, 13 May 2026 20:45:02 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id BFABE6B0005; Wed, 13 May 2026 16:45:01 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id BABAA6B0088; Wed, 13 May 2026 16:45:01 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id AC15A6B008A; Wed, 13 May 2026 16:45:01 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0011.hostedemail.com [216.40.44.11]) by kanga.kvack.org (Postfix) with ESMTP id 9BAC66B0005 for ; Wed, 13 May 2026 16:45:01 -0400 (EDT) Received: from smtpin06.hostedemail.com (lb01a-stub [10.200.18.249]) by unirelay06.hostedemail.com (Postfix) with ESMTP id 3DBF81C011E for ; Wed, 13 May 2026 20:45:01 +0000 (UTC) X-FDA: 84763576002.06.1B0B187 Received: from tor.source.kernel.org (tor.source.kernel.org [172.105.4.254]) by imf10.hostedemail.com (Postfix) with ESMTP id BB2E8C0005 for ; Wed, 13 May 2026 20:44:59 +0000 (UTC) Authentication-Results: imf10.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=MwsS+Xa0; spf=pass (imf10.hostedemail.com: domain of tj@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=tj@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1778705099; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:in-reply-to: references:references:dkim-signature; bh=hK59TklJ3r7JacXrdSpS9889H0qpgYzPE9M9TYuJ0n4=; b=KeNHqgfsRQlJpe38PLyBFl31nFTw+i9YEwPccWMCgZ2lmRzf6sohi2aOOtJNuS9KV8eAKW xgo21wLAuYYcz52T1xnoVgffcy/AljIs2+1RWX3SRObISEXJi+JG+BvsN7TqENkF7yGe55 cS9XDi4ypvUUYT58P66YlAfOJCE/VXM= ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1778705099; a=rsa-sha256; cv=none; b=hmTrcaUlX/5svmcWxDAVbxZ9vgZPl6EEpAxcJ1/5NoeDrWnmiyL44n90pmT1A0kVylSkFs JfzTsuZZyOVM9KWquH7dzk1Md764zvKXQWjRR36n+SclOH3Z4IE96E03smq2ctkCdlANYb 4/gnGUu7A4mnVWZIySoJdq6h7L7CdNM= ARC-Authentication-Results: i=1; imf10.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=MwsS+Xa0; spf=pass (imf10.hostedemail.com: domain of tj@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=tj@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id F3817600AE; Wed, 13 May 2026 20:44:58 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8C499C19425; Wed, 13 May 2026 20:44:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1778705098; bh=hK59TklJ3r7JacXrdSpS9889H0qpgYzPE9M9TYuJ0n4=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=MwsS+Xa0ve7JCeRzGoYjxyFKLIECSSEzJfYMPQBm5oVeYiLGSXLTpVQnMIEhTfA7+ 1QS5UVfvr88oG9z8SeUtfZjA5O8CsyJIj8vK01ihh3oNcl0T1XZJDMCkIdtf9eqOIo 4Oh4ftvn7W66wA2AEqIEZ2yP+oCcJuc/4gsSX64Js6zdr6JFdFIzWJi0iaK5dfALv5 K2WV48WoE1xfrfv5BXkHgiqdFosoNQ51EtyRmDPfVNm3XSszy58YA4UYC2fH1cNZaC L3r7aAuRNntBvwJwjG4h2xgxaVJBL/IC6s2/mmRkSI0+Zs+cuJMu274jB1ZTsccuQ9 3pJXIVyzoQXSg== Date: Wed, 13 May 2026 10:44:57 -1000 Message-ID: From: Tejun Heo To: Thadeu Lima de Souza Cascardo Cc: Johannes Weiner , =?utf-8?q?Michal_Koutn=C3=BD?= , Michal Hocko , Roman Gushchin , Shakeel Butt , Muchun Song , Andrew Morton , Jonathan Corbet , Shuah Khan , Maarten Lankhorst , Maxime Ripard , Natalie Vock , Tvrtko Ursulin , cgroups@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-doc@vger.kernel.org, dri-devel@lists.freedesktop.org, kernel-dev@igalia.com Subject: Re: [PATCH v2] cgroup/dmem: introduce a peak file In-Reply-To: <20260513-dmem_peak-v2-1-dac06999db9e@igalia.com> References: <20260513-dmem_peak-v2-1-dac06999db9e@igalia.com> X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: BB2E8C0005 X-Stat-Signature: jnp1ckz9u1yi7p7crk7j1feg4zcnw4hd X-Rspam-User: X-HE-Tag: 1778705099-14773 X-HE-Meta: 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 qAG5b20+ +TtZJvvgasATGDR1d3y62oHaYe50S6TLofoJBLVZykO8E7XkOy7t9dMoqjpCxNeTokuO64myH+kXNAqr7hN7hKj5DJ3DxZa2bwZNudugq7XwxtVHiwVyhKusLuz2WoVOHVUK1TelbCS5eoxSDxcicTJzCGdrG4bDCBn06ZJKxey5OnMQdvKwlLLwUg8kSaFkAQsCjCgZNer47Lqc= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hello, The patch looks fine to me, but please flesh out the motivation in the commit description - what's the use case, why do we want this? Thanks. -- tejun