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 575FCC88E75 for ; Fri, 18 Sep 2026 03:53:41 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 5427D6B008C; Thu, 17 Sep 2026 23:53:40 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 4EC426B0092; Thu, 17 Sep 2026 23:53:40 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 401D36B0093; Thu, 17 Sep 2026 23:53:40 -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 1BAD66B008C for ; Thu, 17 Sep 2026 23:53:40 -0400 (EDT) Received: from smtpin22.hostedemail.com (lb01a-stub [10.200.18.249]) by unirelay05.hostedemail.com (Postfix) with ESMTP id 4E5F640589 for ; Fri, 18 Sep 2026 03:53:39 +0000 (UTC) X-FDA: 85225513758.22.2BE8EF2 Received: from tor.source.kernel.org (tor.source.kernel.org [172.105.4.254]) by imf04.hostedemail.com (Postfix) with ESMTP id AACA840004 for ; Fri, 18 Sep 2026 03:53:37 +0000 (UTC) Authentication-Results: imf04.hostedemail.com; dkim=pass header.d=linux-foundation.org header.s=korg header.b=faMWUe+E; spf=pass (imf04.hostedemail.com: domain of akpm@linux-foundation.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=akpm@linux-foundation.org; dmarc=none ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1789703617; 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:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=NyjeJYQAoIT6JPqi52GByedAXFRsvGfuaaVIMzoH39U=; b=wg1O1ajWBMNkO2J/00MmzLkbMzAgbo2wsLHTxW9oBjbDTaDSxBd/43JQs1vSb9SKcxR6qe r5c1BuWl/n75iIAkSzldYyOf4KaG9RDci1HFTZmAHpUIpZAkPW37WxXq1v65qTOEtdD5Q9 /lUt8jdYhhX2/tjt1TN3sQipXpayAaY= ARC-Seal: i=1; a=rsa-sha256; d=hostedemail.com; s=arc-20220608; cv=none; t=1789703617; b=jmWQyPog1bUBNU1QTvYqcjUNqZM7jdUbNw6+xStNGI0v+QoQ3uVHQEQMIaNLOg0S6BA0Wz f2/dSOlmzV+YcMTR4i9uWJGD+vtkhROb6NNLSDv1P8diAPi0m4Uh4Ugu4v7LkC5uABiC/g q/XqAssyULfJ/vMQtn0nHeqDsddj7WI= ARC-Authentication-Results: i=1; imf04.hostedemail.com; dkim=pass header.d=linux-foundation.org header.s=korg header.b=faMWUe+E; spf=pass (imf04.hostedemail.com: domain of akpm@linux-foundation.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=akpm@linux-foundation.org; dmarc=none Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by tor.source.kernel.org (Postfix) with ESMTP id CDE51600AA; Fri, 18 Sep 2026 03:53:36 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 54D4C1F000FF; Fri, 18 Sep 2026 03:53:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1789703616; bh=NyjeJYQAoIT6JPqi52GByedAXFRsvGfuaaVIMzoH39U=; h=Date:From:To:Cc:Subject:In-Reply-To:References; b=faMWUe+E92wqRxtkbgaWMXRYwf6KR2EqEIoqeW2C5x8Tk7PKPPibffuWfOOMaOnRJ mpr69blAKOn6oTolFU0h1fttVhImQOrJ+9OHLp6NW6w63EYu7M7joHbQ+8dYkv9PAo J6YjQQJYozXesL/9g+YQJEr51aieL7Rd2UoPU2X8= Date: Thu, 17 Sep 2026 20:53:34 -0700 From: Andrew Morton To: Ackerley Tng Cc: Ackerley Tng via B4 Relay , Alex Shi , David Hildenbrand , Dongliang Mu , Hongxiang Lou , Johannes Weiner , Jonathan Corbet , Joshua Hahn , "Liam R. Howlett" , Lorenzo Stoakes , Miaohe Lin , Michal Hocko , Mike Rapoport , Muchun Song , Nhat Pham , Oscar Salvador , Peter Xu , Randy Dunlap , Roman Gushchin , Shakeel Butt , Shuah Khan , Suren Baghdasaryan , Usama Arif , Vlastimil Babka , Wupeng Ma , Yanteng Si , Naoya Horiguchi , fvdl@google.com, jthoughton@google.com, rientjes@google.com, vannapurve@google.com, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, stable@vger.kernel.org Subject: Re: [PATCH v3 0/4] Fix HugeTLB subpool used_hpages tracking Message-Id: <20260917205334.9ac84d529c686983ef420567@linux-foundation.org> In-Reply-To: References: <20260916-hugetlb-subpool-always-track-used-v3-0-38aae9b5ccdd@google.com> <20260916201307.5618114cbac4af52d98aecfa@linux-foundation.org> X-Mailer: Sylpheed 3.8.0beta1 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Rspamd-Server: rspam04 X-Rspam-User: X-Stat-Signature: hm3834abmdbnw4sm8e5cpxouhgzysgn7 X-Rspamd-Queue-Id: AACA840004 X-HE-Tag: 1789703617-511356 X-HE-Meta: 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 x7MgLqO0 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 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Thu, 17 Sep 2026 20:05:33 -0700 Ackerley Tng wrote: > > Ho hum, complicated. Let's at least slap a Fixes: on [4/4]. My > > trillion-dollar sidekick suggests a9e443086489 ("hugetlb: disable > > region_add file_region coalescing"). > > > > Your trillion-dollar sidekick got the right patch but the wrong hash :) > > Fixes: 0db9d74ed884 ("hugetlb: disable region_add file_region coalescing") Well, I only feed it $100/mo. > I'll also reply to the last patch with the above. If there are no > further revisions required, could you please add the above tag in for > me? Shall try to remember to to that. Whack me if you see the "added-to-mm" email and I forgot. > > Our other little friend is talking to us: > > https://sashiko.dev/#/patchset/20260916-hugetlb-subpool-always-track-used-v3-0-38aae9b5ccdd@google.com > > > > I'd like to queue this up promptly because it fixes things. But let's > > seek additional review input and argue with Sashiko before taking that > > step. > > I'll copy Sashiko's comments onto this patch series in replies. :) Great, thanks.