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(p200300cbc7071600a3ceb459ef577b93.dip0.t-ipconnect.de. [2003:cb:c707:1600:a3ce:b459:ef57:7b93]) by smtp.gmail.com with ESMTPSA id u13-20020a5d514d000000b0021d7ad6b9fdsm15792376wrt.57.2022.08.10.02.29.01 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 10 Aug 2022 02:29:01 -0700 (PDT) Message-ID: <40b78cfd-c43a-8624-cd1e-8680a081a10d@redhat.com> Date: Wed, 10 Aug 2022 11:29:01 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.11.0 Subject: Re: [PATCH v1 1/2] mm/hugetlb: fix hugetlb not supporting write-notify To: Peter Xu Cc: Mike Kravetz , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Andrew Morton , Muchun Song , Peter Feiner , "Kirill A . Shutemov" , stable@vger.kernel.org References: <20220805110329.80540-1-david@redhat.com> <20220805110329.80540-2-david@redhat.com> <73050e64-e40f-0c94-be96-316d1e8d5f3b@redhat.com> <36bcc1f5-40e9-2d2b-3e94-18994bf62ca4@redhat.com> From: David Hildenbrand Organization: Red Hat In-Reply-To: X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1660123753; a=rsa-sha256; cv=none; b=C5gr9nbN1iCPUc822tz2saC9mF9qcK1mt7tQJ6Tk9rAZeXIDveaApZ0/ecbKi5zbGf2W5v 6Ga6xelLc5DxpLXvGkhTphrX9k8UtJsirV/lxSJYTXLCy/kcH8rt3S1p7hHhx56bkj967d AHFBh1IsMLn2Irz/n3JpISnx7IM/JUw= ARC-Authentication-Results: i=1; imf14.hostedemail.com; dkim=pass header.d=redhat.com header.s=mimecast20190719 header.b=LLDie0aj; dmarc=pass (policy=none) header.from=redhat.com; spf=pass (imf14.hostedemail.com: domain of david@redhat.com designates 170.10.133.124 as permitted sender) smtp.mailfrom=david@redhat.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1660123753; 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=cYlVavV3CJNDmR/k23+nnTOqqc22cvfzjUUlVxgKawU=; b=DLzu/HFWCo/K2HqHOBGRtfJ6aSPEaXhFZUSpFdbAfdHsgqg6boleGZ6pV+WchCCXhwYx+2 CcCU/+lMnktyNGiXOMqVTR3bacaXYkpnTGw7S5tp/DmC2xuL44tkkDjt/M0jMUClAOyd5m Z/SBHDkB0BdzM7gNuVXT9u+0UdAOxOE= X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: BE7C71000A3 Authentication-Results: imf14.hostedemail.com; dkim=pass header.d=redhat.com header.s=mimecast20190719 header.b=LLDie0aj; dmarc=pass (policy=none) header.from=redhat.com; spf=pass (imf14.hostedemail.com: domain of david@redhat.com designates 170.10.133.124 as permitted sender) smtp.mailfrom=david@redhat.com X-Rspam-User: X-Stat-Signature: n8aqhi988m6siie367f589bq4k88nehn X-HE-Tag: 1660123752-287329 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 08.08.22 21:28, Peter Xu wrote: > On Mon, Aug 08, 2022 at 06:36:58PM +0200, David Hildenbrand wrote: >> Well, because the write-fault handler as is cannot deal with >> write-faults in shared mappings. It cannot possibly work or ever have >> worked. > > Trivially - maybe drop the word "require" in "Hugetlb does not > require/support writenotify"? > Sure, can do. -- Thanks, David / dhildenb