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[2003:cb:c709:a00:46df:e778:456a:8d6b]) by smtp.gmail.com with ESMTPSA id p2-20020a056000018200b002103cfd2fbasm13329363wrx.65.2022.06.28.03.42.47 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 28 Jun 2022 03:42:47 -0700 (PDT) Message-ID: <79a7969c-311f-d36b-4d44-dfe2f02c9b99@redhat.com> Date: Tue, 28 Jun 2022 12:42:44 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.9.0 Subject: Re: [PATCH v6 02/14] mm: handling Non-LRU pages returned by vm_normal_pages To: Alex Sierra , jgg@nvidia.com Cc: Felix.Kuehling@amd.com, linux-mm@kvack.org, rcampbell@nvidia.com, linux-ext4@vger.kernel.org, linux-xfs@vger.kernel.org, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, hch@lst.de, jglisse@redhat.com, apopple@nvidia.com, willy@infradead.org, akpm@linux-foundation.org References: <20220628001454.3503-1-alex.sierra@amd.com> <20220628001454.3503-3-alex.sierra@amd.com> From: David Hildenbrand Organization: Red Hat In-Reply-To: <20220628001454.3503-3-alex.sierra@amd.com> 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-Authentication-Results: i=1; imf19.hostedemail.com; dkim=pass header.d=redhat.com header.s=mimecast20190719 header.b="Hck/UEpI"; dmarc=pass (policy=none) header.from=redhat.com; spf=none (imf19.hostedemail.com: domain of david@redhat.com has no SPF policy when checking 170.10.133.124) smtp.mailfrom=david@redhat.com ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1656412971; a=rsa-sha256; cv=none; b=OGAUHhDX4RZi/zx99N7uId/dDkf5pDgHhz62yM57uKInXcdCNxjrTq4OeaZnMzSBRIznqo DyeLGthEvOUN0zeGiEWiceZen1pNRSPZC6236UhXXsoeT9Q+DmAwt1sq7/FuvRVQIk5EK/ 9kjfAWGkIl1pNIjJ4mQkCC79yNZcw0k= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1656412971; 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=ONUUHv3MjjvFIJKVWzF/NPSOZ8SZcSjCl83bnjLd8nk=; b=L94pahDAcH75rBLAxWH2U7EsTudZcnzHoq9RFsUB+lFJgAUZOE9E+XAgEko/bLDwt66ENa QyKfh0l0OCKrgeppHSUuKmFYPU1pxa1ZSf9IdTjsoLGBoZy5ywhTO4KvGGzKBPqTj6/Zi6 kUGU39aJa5dTRhZft5V4nSkiDSlqat0= X-Stat-Signature: e18rfx93k1kj1dpxai5fmecm6natubub X-Rspamd-Server: rspam08 X-Rspam-User: X-Rspamd-Queue-Id: 36B851A002D Authentication-Results: imf19.hostedemail.com; dkim=pass header.d=redhat.com header.s=mimecast20190719 header.b="Hck/UEpI"; dmarc=pass (policy=none) header.from=redhat.com; spf=none (imf19.hostedemail.com: domain of david@redhat.com has no SPF policy when checking 170.10.133.124) smtp.mailfrom=david@redhat.com X-HE-Tag: 1656412971-305640 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 28.06.22 02:14, Alex Sierra wrote: > With DEVICE_COHERENT, we'll soon have vm_normal_pages() return > device-managed anonymous pages that are not LRU pages. Although they > behave like normal pages for purposes of mapping in CPU page, and for > COW. They do not support LRU lists, NUMA migration or THP. > > We also introduced a FOLL_LRU flag that adds the same behaviour to > follow_page and related APIs, to allow callers to specify that they > expect to put pages on an LRU list. > > Signed-off-by: Alex Sierra > Acked-by: Felix Kuehling > Reviewed-by: Alistair Popple > --- I think my review feedback regarding FOLL_LRU has been ignored. -- Thanks, David / dhildenb