Received: by 2002:a25:d7c1:0:0:0:0:0 with SMTP id o184csp5338095ybg; Tue, 22 Oct 2019 01:29:09 -0700 (PDT) X-Google-Smtp-Source: APXvYqyVEJwsJpaMTEi6yp1O030RFyek0iUNWjyFsX/I7Hb/xtYHoLsksDN4WCJdWo37FIMHEitt X-Received: by 2002:a17:906:49d1:: with SMTP id w17mr26737728ejv.101.1571732949002; Tue, 22 Oct 2019 01:29:09 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1571732948; cv=none; d=google.com; s=arc-20160816; b=LSDRkyx5OL+5pvWW8SNmQEDYlNzOcBADXK+OXXPInWjpjsq6emK49MNewP4VJL+hrA Nsx4oFdrT+RhZ56BRmHD4zt+EC/BZl/MlcygrQeqUPXgMMORE/usen8WODU7x5vfoBSt iT8dyk3tvjVc2Rac2A+uKdizC5if5wPMcC80HDPfU/itwyR9PeBzFoqYqbmI/IQCdHbO h+OpLCE0h7e3Ary4NvbbMmhhA8ZmmuJ4ShovOWOJ/Re/6pnqFBjlChLzqkOyxlonM/l2 /Zfns0aPw1cIdhwXX/iPr+p6ETqIvnqOBaLCWnYg2ZGAFFrb7glQaSkUDyB3IUNEOPgg vClw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:user-agent:in-reply-to :content-disposition:mime-version:references:message-id:subject:cc :to:from:date; bh=hfm2xu4apBTpceJW+iBHrb1JXLpwyK6PKQiECBw/seg=; b=hWxkScDfY71gCNnzSdfFVozhGnQ6QufAgJjKTaT7lKMIDc1zrtM/xoHTsRZLq0gmOB xTKzEFNsUxw49jEHKQDaqbwtcPWdBdS6DnF6VEHsu7GAtjT6RjlweQRy0edQAPS3uNEx 1ex8Xu6bVTzIdaAWDcUP4PR4jjUdWICyYwJEHUkl2q2LxBI2fm1b8skeMwY81jxaxkBo ifHtYpzQj1HVcZJy2Z0mhCPzUVJnmPI0wo97sEQnDkUincp0HKWysGQNhHwaHqps2A8G n1p7FbGD/7EcEGI45iZiQ64ok1L/N1cp44+4g2v8nSSpYM4hKdA3qRVmZytE0mffmAR2 Vm9w== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id i19si10408544ejf.247.2019.10.22.01.28.44; Tue, 22 Oct 2019 01:29:08 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388382AbfJVI0N (ORCPT + 99 others); Tue, 22 Oct 2019 04:26:13 -0400 Received: from mx2.suse.de ([195.135.220.15]:38716 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S2388155AbfJVI0M (ORCPT ); Tue, 22 Oct 2019 04:26:12 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id CB077AFF1; Tue, 22 Oct 2019 08:26:11 +0000 (UTC) Date: Tue, 22 Oct 2019 10:26:11 +0200 From: Michal Hocko To: Oscar Salvador Cc: n-horiguchi@ah.jp.nec.com, mike.kravetz@oracle.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [RFC PATCH v2 10/16] mm,hwpoison: Rework soft offline for free pages Message-ID: <20191022082611.GD9379@dhcp22.suse.cz> References: <20191017142123.24245-1-osalvador@suse.de> <20191017142123.24245-11-osalvador@suse.de> <20191018120615.GM5017@dhcp22.suse.cz> <20191021125842.GA11330@linux> <20191021154158.GV9379@dhcp22.suse.cz> <20191022074615.GA19060@linux> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20191022074615.GA19060@linux> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue 22-10-19 09:46:20, Oscar Salvador wrote: [...] > So, opposite to hard-offline, in soft-offline we do not fiddle with pages > unless we are sure the page is not reachable anymore by any means. I have to say I do not follow. Is there any _real_ reason for soft-offline to behave differenttly from MCE (hard-offline)? -- Michal Hocko SUSE Labs