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[2003:cb:c703:7600:a8ea:29ce:7ee3:dd41]) by smtp.gmail.com with ESMTPSA id e25-20020a05600c4b9900b003cf4ec90938sm2220657wmp.21.2022.11.30.08.08.07 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 30 Nov 2022 08:08:08 -0800 (PST) Message-ID: Date: Wed, 30 Nov 2022 17:08:07 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.5.0 Subject: Re: [PATCH 05/10] mm/hugetlb: Make userfaultfd_huge_must_wait() safe to pmd unshare To: Peter Xu , linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: James Houghton , Jann Horn , Andrew Morton , Andrea Arcangeli , Rik van Riel , Nadav Amit , Miaohe Lin , Muchun Song , Mike Kravetz References: <20221129193526.3588187-1-peterx@redhat.com> <20221129193526.3588187-6-peterx@redhat.com> From: David Hildenbrand Organization: Red Hat In-Reply-To: <20221129193526.3588187-6-peterx@redhat.com> X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1669824494; a=rsa-sha256; cv=none; b=NC898nY5GrxsJ5Sy2UD9swgbQ2d+lfifNfWD/KPG6iFuhJr+yu4bItuQY+Cq+NBWFnrAkQ 03xvsztEtc9UdVlz0oWxI3kiE2EQu+xZtGziycjIuLecabiv3Hzf9QMyNuYMd0BiC9Z0xn cYIISaenJsc+Cpqi5Cn2yjwMPW4HbNQ= ARC-Authentication-Results: i=1; imf25.hostedemail.com; dkim=pass header.d=redhat.com header.s=mimecast20190719 header.b="Sy1fgW/M"; dmarc=pass (policy=none) header.from=redhat.com; spf=pass (imf25.hostedemail.com: domain of david@redhat.com designates 170.10.129.124 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=1669824494; 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=iVNwuW5+uccfiZVDEZIcPICj3awEkrtKMxi+jom/QYY=; b=K67iIdEnjgEmEeXrbbF2b6scBGb8LUUtd81nuHZQESJ4TEmNLEpznJwhS0j1kQeuaIerMB AvPNItz7uY+c1FsCZye/3Gvqda0pBiZ4loCKW05dKRlMPBF9Dbv1r3aH1cCdr0W10ak0tY OSt5eqk5z1pp1FW18lwJ3GG3f6BxcbI= X-Rspamd-Queue-Id: 540F0A0015 X-Rspam-User: Authentication-Results: imf25.hostedemail.com; dkim=pass header.d=redhat.com header.s=mimecast20190719 header.b="Sy1fgW/M"; dmarc=pass (policy=none) header.from=redhat.com; spf=pass (imf25.hostedemail.com: domain of david@redhat.com designates 170.10.129.124 as permitted sender) smtp.mailfrom=david@redhat.com X-Rspamd-Server: rspam09 X-Stat-Signature: gdrx5zdorf96awkybsqgpzwut3a6pe9y X-HE-Tag: 1669824494-751543 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 29.11.22 20:35, Peter Xu wrote: > We can take the hugetlb walker lock, here taking vma lock directly. > > Signed-off-by: Peter Xu > --- Reviewed-by: David Hildenbrand -- Thanks, David / dhildenb