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Win64; x64; rv:102.0) Gecko/20100101 Thunderbird/102.10.1 Subject: Re: [PATCH 0/4] mm: migrate: more folio conversion Content-Language: en-US To: David Hildenbrand , Andrew Morton , , CC: Huang Ying , Matthew Wilcox References: <20230802095346.87449-1-wangkefeng.wang@huawei.com> From: Kefeng Wang In-Reply-To: Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 7bit X-Originating-IP: [10.174.177.243] X-ClientProxiedBy: dggems702-chm.china.huawei.com (10.3.19.179) To dggpemm100001.china.huawei.com (7.185.36.93) X-CFilter-Loop: Reflected X-Stat-Signature: pfhrn8tfwkm1mqayodr4qgafobg9w4or X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: C838416001C X-Rspam-User: X-HE-Tag: 1690979902-454045 X-HE-Meta: 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 EWKwiDAs ln/nS36ByFSJxP2LlmQJySHtZRcUzWR9NL7TEzaKTYeXpwUyk0gcqhdwv2ZaJfXnSmpXGoh+pqz2P/yvFvMOXpGiCWgeyBIs56G8jROLz3Y+DDRdWVLz8+nUG6xl3wsRLP9jJ 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 2023/8/2 19:47, David Hildenbrand wrote: > On 02.08.23 11:53, Kefeng Wang wrote: >> This patch series converts several functions to use folio in migrate.c. > > Please clearly spell out in the patch descriptions when you are changing > mapcount logic and which effects that might have (both, positive and > negative) for PTE-mapped THP. Oh, I see your comments on another mail[1], the folio_estimated_sharers() is not good to evaluate the sharing by multiple processes, will read more history of the mail's discussion, maybe just ignore the first three patches. Thank. [1] [PATCH 0/2] don't use mapcount() to check large folio sharing >