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 X-Spam-Level: X-Spam-Status: No, score=-5.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 28EDCC433DB for ; Mon, 22 Feb 2021 09:25:31 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 998AD64E2F for ; Mon, 22 Feb 2021 09:25:30 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 998AD64E2F Authentication-Results: mail.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=suse.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id CE2846B006E; Mon, 22 Feb 2021 04:25:29 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id C93536B0070; Mon, 22 Feb 2021 04:25:29 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id B81776B0071; Mon, 22 Feb 2021 04:25:29 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0148.hostedemail.com [216.40.44.148]) by kanga.kvack.org (Postfix) with ESMTP id 9F1276B006E for ; Mon, 22 Feb 2021 04:25:29 -0500 (EST) Received: from smtpin07.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id 601DA3657 for ; Mon, 22 Feb 2021 09:25:29 +0000 (UTC) X-FDA: 77845370778.07.27825E1 Received: from mx2.suse.de (mx2.suse.de [195.135.220.15]) by imf28.hostedemail.com (Postfix) with ESMTP id CCEF720001DC for ; Mon, 22 Feb 2021 09:25:28 +0000 (UTC) X-Virus-Scanned: by amavisd-new at test-mx.suse.de DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1613985927; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=UahR2KSk7VlBZc3dTRORhVfUx0fNuikYUhL9eaPGX7U=; b=fdt1pIsDWxpYh/9cEIqlC5GwlO0EdIF1ZtDcVKC44TP72vfj4m7lrgFpLv0Z188/YoB8XD xzzyjQZQKyXvUjBhUPQBCOw6LHVFSs0URwuGj7QClp1QfzHFcQE5RGLVinrSWgPT9F9oZA ef3B0M0lGkb4nF24pGHRdCEoARo9HFw= Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 7EFEDACCF; Mon, 22 Feb 2021 09:25:27 +0000 (UTC) Date: Mon, 22 Feb 2021 10:25:26 +0100 From: Michal Hocko To: Muchun Song Cc: Jonathan Corbet , Mike Kravetz , Thomas Gleixner , mingo@redhat.com, bp@alien8.de, x86@kernel.org, hpa@zytor.com, dave.hansen@linux.intel.com, luto@kernel.org, Peter Zijlstra , viro@zeniv.linux.org.uk, Andrew Morton , paulmck@kernel.org, mchehab+huawei@kernel.org, pawan.kumar.gupta@linux.intel.com, Randy Dunlap , oneukum@suse.com, anshuman.khandual@arm.com, jroedel@suse.de, Mina Almasry , David Rientjes , Matthew Wilcox , Oscar Salvador , "Song Bao Hua (Barry Song)" , David Hildenbrand , HORIGUCHI =?utf-8?B?TkFPWUEo5aCA5Y+jIOebtOS5nyk=?= , Joao Martins , Xiongchun duan , linux-doc@vger.kernel.org, LKML , Linux Memory Management List , linux-fsdevel Subject: Re: [External] Re: [PATCH v16 4/9] mm: hugetlb: alloc the vmemmap pages associated with each HugeTLB page Message-ID: References: <20210219104954.67390-1-songmuchun@bytedance.com> <20210219104954.67390-5-songmuchun@bytedance.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Stat-Signature: ao9jb5wewqw7iwz1j3umaj7gy4dcujmd X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: CCEF720001DC Received-SPF: none (suse.com>: No applicable sender policy available) receiver=imf28; identity=mailfrom; envelope-from=""; helo=mx2.suse.de; client-ip=195.135.220.15 X-HE-DKIM-Result: pass/pass X-HE-Tag: 1613985928-827280 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Sat 20-02-21 12:20:36, Muchun Song wrote: > On Fri, Feb 19, 2021 at 10:12 PM Michal Hocko wrote: [...] > > What about hugetlb page poisoning on HW failure (resp. soft offlining)? > > If the HW poisoned hugetlb page failed to be dissolved, the page > will go back to the free list with PG_HWPoison set. But the page > will not be used, because we will check whether the page is HW > poisoned when it is dequeued from the free list. If so, we will skip > this page. Can this lead to an underprovisioned pool then? Or is there a new hugetlb allocated to replace the poisoned one? -- Michal Hocko SUSE Labs