Hi all, After Willy's heads-up on the removal of CONFIG_READ_ONLY_THP_FOR_FS[1]. This patchset is an attempt of removing it.
The patchset does the removal in the following steps: 1. remove READ_ONLY_THP_FOR_FS Kconfig 2. remove collapse_file() code on READ_ONLY_THP_FOR_FS 3. remove filemap_nr_thps*() functions 4. remove file_thp_enabled() 5. remove related folio splittable checks 6. replace try_folio_split_to_order() with folio_split() in truncate_inode_partial_folio(). 6. remove related fs code 7. clean up selftests code It seems that NR_FILE_THPS is also used for fs with large folio support, so it is kept. Let me know if I miss anything. Comments and suggestions are welcome. Link: https://lore.kernel.org/all/[email protected]/ [1] Zi Yan (11): mm: remove READ_ONLY_THP_FOR_FS Kconfig option mm/khugepaged: remove READ_ONLY_THP_FOR_FS code in collapse_file() mm: remove filemap_nr_thps*() functions mm/huge_memory: remove file_thp_enabled() and its caller. mm/huge_memory: remove folio split check for READ_ONLY_THP_FOR_FS mm/truncate: use folio_split() in truncate_inode_partial_folio() fs: remove nr_thp from struct address_space fs: remove READ_ONLY_THP_FOR_FS code fs/btrfs: remove a comment referring to READ_ONLY_THP_FOR_FS selftests/mm: remove READ_ONLY_THP_FOR_FS test in khugepaged selftests/mm: remove READ_ONLY_THP_FOR_FS test in guard-regions fs/btrfs/defrag.c | 3 - fs/inode.c | 3 - fs/open.c | 27 --- include/linux/fs.h | 5 - include/linux/huge_mm.h | 28 --- include/linux/pagemap.h | 29 --- mm/Kconfig | 11 -- mm/filemap.c | 1 - mm/huge_memory.c | 44 ----- mm/khugepaged.c | 159 ++++------------- mm/truncate.c | 8 +- tools/testing/selftests/mm/guard-regions.c | 148 +--------------- tools/testing/selftests/mm/khugepaged.c | 197 +-------------------- 13 files changed, 42 insertions(+), 621 deletions(-) -- 2.43.0
