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=-5.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, NICE_REPLY_A,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 1FDC9C433B4 for ; Thu, 1 Apr 2021 00:24:41 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 5FBA361001 for ; Thu, 1 Apr 2021 00:24:40 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5FBA361001 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linux-foundation.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 8C5C66B0080; Wed, 31 Mar 2021 20:24:39 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 876406B0081; Wed, 31 Mar 2021 20:24:39 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 73DA06B0082; Wed, 31 Mar 2021 20:24:39 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0206.hostedemail.com [216.40.44.206]) by kanga.kvack.org (Postfix) with ESMTP id 57F316B0080 for ; Wed, 31 Mar 2021 20:24:39 -0400 (EDT) Received: from smtpin14.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id 12147180260F9 for ; Thu, 1 Apr 2021 00:24:39 +0000 (UTC) X-FDA: 77981902278.14.5ED7A83 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf08.hostedemail.com (Postfix) with ESMTP id 00E4E80192C7 for ; Thu, 1 Apr 2021 00:24:36 +0000 (UTC) Received: by mail.kernel.org (Postfix) with ESMTPSA id B08D961001; Thu, 1 Apr 2021 00:24:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1617236676; bh=gLUa9Cv36lS6Ye58IN3xZXaCNCRPQPiULeyeri4i3N8=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=0e/o12XugAFbYd+f0XIAkAcKxPNnub8+C2c1HMNSvRWYKnCMimNnl1D8tYNWymnYU ZN/lzNfAhk3ofH784OKlAPyEHsvGYNHpQWWmC65DW31nfFPqA2caBLrAEc8ph+3663 Affqxwp85K5WZvjMpXOr9Q7W0nwN7ja4N2qzkSL4= Date: Wed, 31 Mar 2021 17:24:35 -0700 From: Andrew Morton To: Michal Hocko Cc: Mike Rapoport , Bui Quang Minh , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Andrea Arcangeli Subject: Re: [PATCH] userfaultfd: Write protect when virtual memory range has no page table entry Message-Id: <20210331172435.7d06f805c803553517f03271@linux-foundation.org> In-Reply-To: References: <20210319152428.52683-1-minhquangbui99@gmail.com> X-Mailer: Sylpheed 3.5.1 (GTK+ 2.24.31; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Rspamd-Server: rspam01 X-Rspamd-Queue-Id: 00E4E80192C7 X-Stat-Signature: fh1h8tcpzrbz5yjsp14e3tbb16nwjbfb Received-SPF: none (linux-foundation.org>: No applicable sender policy available) receiver=imf08; identity=mailfrom; envelope-from=""; helo=mail.kernel.org; client-ip=198.145.29.99 X-HE-DKIM-Result: pass/pass X-HE-Tag: 1617236676-729463 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 Wed, 31 Mar 2021 16:49:27 +0200 Michal Hocko wrote: > > Thanks for the clarification! I have suspected this to be the case but > > I am not really familiar with the interface to have any strong statement > > here. Maybe we want to document this explicitly. > > Btw. Andrew the patch still seems to be in mmotm. Do you plan to keep it > there? Dropped, thanks.