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Patch series "mm/mincore: minor clean up for swap cache checking". 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. This patch (of 2): The filemap_get_incore_folio (previously find_get_incore_page) helper was introduced by commit61ef186557("mm: factor find_get_incore_page out of mincore_page") to be used by later commitf5df8635c5("mm: use find_get_incore_page in memcontrol"), so memory cgroup charge move code can be simplified. But commit6b611388b6("memcg-v1: remove charge move code") removed that user completely, it's only used by mincore now. So this commit basically reverts commit61ef186557("mm: factor find_get_incore_page out of mincore_page"). Move it back to mincore side to simplify the code. Link: https://lkml.kernel.org/r/20250811172018.48901-1-ryncsn@gmail.com Link: https://lkml.kernel.org/r/20250811172018.48901-2-ryncsn@gmail.com Signed-off-by: Kairui Song <kasong@tencent.com> Acked-by: Nhat Pham <nphamcs@gmail.com> Cc: Baoquan He <bhe@redhat.com> Cc: Barry Song <baohua@kernel.org> Cc: Chris Li <chrisl@kernel.org> Cc: David Hildenbrand <david@redhat.com> Cc: Hugh Dickins <hughd@google.com> Cc: Jann Horn <jannh@google.com> Cc: Kemeng Shi <shikemeng@huaweicloud.com> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.