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Mon, 11 Aug 2025 10:21:25 -0700 (PDT) Received: from KASONG-MC4 ([101.32.222.185]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-241e89769fasm276685055ad.107.2025.08.11.10.21.20 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Mon, 11 Aug 2025 10:21:25 -0700 (PDT) From: Kairui Song To: linux-mm@kvack.org Cc: Andrew Morton , "Liam R. Howlett" , Lorenzo Stoakes , Vlastimil Babka , Jann Horn , Pedro Falcato , Matthew Wilcox , Hugh Dickins , David Hildenbrand , Chris Li , Barry Song , Baoquan He , Nhat Pham , Kemeng Shi , linux-kernel@vger.kernel.org, Kairui Song Subject: [PATCH 0/2] mm/mincore: minor clean up for swap cache checking Date: Tue, 12 Aug 2025 01:20:16 +0800 Message-ID: <20250811172018.48901-1-ryncsn@gmail.com> X-Mailer: git-send-email 2.50.1 Reply-To: Kairui Song MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Stat-Signature: u3jecqqsobxapw69fbymy99pebgcyxq4 X-Rspam-User: X-Rspamd-Queue-Id: 86745100004 X-Rspamd-Server: rspam02 X-HE-Tag: 1754932887-185470 X-HE-Meta: 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 MQfr5aMF 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 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: List-Subscribe: List-Unsubscribe: From: Kairui Song This series cleans up a swap cache helper only used by mincore, move it back into mincore code. Also separate the swap cache related logics out of shmem / page cache logics in mincore. With this series we have less lines of code and better performance. Before this series: mincore on a swaped out 16G anon mmap range: Took 488220 us mincore on 16G shmem mmap range: Took 530272 us. After this series: mincore on a swaped out 16G anon mmap range: Took 446763 us mincore on 16G shmem mmap range: Took 460496 us. About ~10% faster. Kairui Song (2): mm/mincore, swap: consolidate swap cache checking for mincore mm/mincore: use a helper for checking the swap cache mm/mincore.c | 70 +++++++++++++++++++++++++++++++++++-------------- mm/swap.h | 10 ------- mm/swap_state.c | 38 --------------------------- 3 files changed, 51 insertions(+), 67 deletions(-) --- Changelog: - Remove RFC prefix. - Don't touch the PTL for now [ Jann Horn, David Hildenbrand ] - Fix error check for filemap_get_folio [ Nhat Pham ] RFC: https://lore.kernel.org/linux-mm/20250807152720.62032-1-ryncsn@gmail.com/ -- 2.50.1