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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 Content-Language: en-US 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> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-ext4@vger.kernel.org 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