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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 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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