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R . Silva" , "Liam R . Howlett" , Matthew Wilcox , =?UTF-8?B?TWljaGHFgiBNaXJvc8WCYXc=?= , Mike Rapoport , Nadav Amit , Pasha Tatashin , Paul Gofman , Peter Xu , Shuah Khan , Suren Baghdasaryan , Vlastimil Babka , Yang Shi , Yun Zhou , linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-kselftest@vger.kernel.org, kernel@collabora.com Subject: Re: fs/proc/task_mmu: Implement IOCTL for efficient page table scanning To: =?UTF-8?B?TWljaGHFgiBNaXJvc8WCYXc=?= , Andrei Vagin , Danylo Mocherniuk References: <20230713101415.108875-6-usama.anjum@collabora.com> Content-Language: en-US From: Muhammad Usama Anjum In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 5F9FF100005 X-Rspam-User: X-Rspamd-Server: rspam04 X-Stat-Signature: wrhinpsk78wyspnrm6haf65asn7jsj9c X-HE-Tag: 1689913672-62210 X-HE-Meta: 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 /D9jYHh1 W58REfdCfOC8eSSNE0wEI2DeFhdhgzZZAEJ0zjo8Lf50ty4+vQ8EXu/3OZ7HLOrYYFpb0ObsJm56CJuOBLjOAWm0R7YR7TexJaYKMilVOfkZelfg6Z16gSjhj+AVU5o6VW9CY6kWGMtI0Xwdh3mBddFR7J+iHHtdlduHvgQSxsMbPKjT02juMBT5moPik/3DapXvQMp97JcM0lb/OhffsrlVT8GIrA9P9YM0P/0kCmGrYInXN0b+1uerTLDJJN+Rt3fOX 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: Thank you Michał. On 7/21/23 12:28 AM, Michał Mirosław wrote: > b. rename match "flags" to 'page categories' everywhere - this makes > it easier to differentiate the ioctl()s categorisation of pages > from struct page flags; > c. change {required + excluded} to {inverted + required}. This was > rejected before, but I'd like to illustrate the difference. > Old interface can be translated to the new by: > categories_inverted = excluded_mask > categories_mask = required_mask | excluded_mask > categories_anyof_mask = anyof_mask > The new way allows filtering by: A & (B | !C) > categories_inverted = C > categories_mask = A > categories_anyof_mask = B | C Andrei and Danylo, Are you okay with these masks? It were you two who had proposed these. -- BR, Muhammad Usama Anjum