This patchset converts XFS & iomap to use folios, and gets them to a state where they can handle multi-page folios. Applying these patches is not yet sufficient to actually start using multi-page folios for XFS; more page cache changes are needed. I don't anticipate needing to touch XFS again until we're at the point where we want to convert the aops to be type-safe. It completes an xfstests run with no unexpected failures. I think everything here has been posted before, but I want to get acks/reviews on patch 15 in particular. I'll send a pull request for these patches tomorrow. v3: - Rebased to -rc5, which removes the first four patches from v2. - Fixed passing lengths > PAGE_SIZE to iomap_write_begin(). v2: - Added review tags from Jens, Darrick & Christoph (thanks!) - Added folio_zero_* wrappers around zero_user_*() - Added a patch to rename AS_THP_SUPPORT - Added a patch to convert __block_write_begin_int() to take a folio - Split the iomap_add_to_ioend() patch into three - Updated changelog of bio_add_folio() (Jens) - Adjusted whitespace of bio patches (Christoph, Jens) - Improved changelog of readahead conversion to explain why the put_page() disappeared (Christoph) - Add a patch to zero an entire folio at a time, instead of limiting to a page - Switch pos & end_pos back to being u64 from loff_t - Call block_write_end() and ->page_done with the head page of the folio, as that's what those functions expect. Matthew Wilcox (Oracle) (25): block: Add bio_add_folio() block: Add bio_for_each_folio_all() fs/buffer: Convert __block_write_begin_int() to take a folio iomap: Convert to_iomap_page to take a folio iomap: Convert iomap_page_create to take a folio iomap: Convert iomap_page_release to take a folio iomap: Convert iomap_releasepage to use a folio iomap: Add iomap_invalidate_folio iomap: Pass the iomap_page into iomap_set_range_uptodate iomap: Convert bio completions to use folios iomap: Use folio offsets instead of page offsets iomap: Convert iomap_read_inline_data to take a folio iomap: Convert readahead and readpage to use a folio iomap: Convert iomap_page_mkwrite to use a folio iomap: Allow iomap_write_begin() to be called with the full length iomap: Convert __iomap_zero_iter to use a folio iomap: Convert iomap_write_begin() and iomap_write_end() to folios iomap: Convert iomap_write_end_inline to take a folio iomap,xfs: Convert ->discard_page to ->discard_folio iomap: Simplify iomap_writepage_map() iomap: Simplify iomap_do_writepage() iomap: Convert iomap_add_to_ioend() to take a folio iomap: Convert iomap_migrate_page() to use folios iomap: Support large folios in invalidatepage xfs: Support large folios Documentation/core-api/kernel-api.rst | 1 + block/bio.c | 22 ++ fs/buffer.c | 23 +- fs/internal.h | 2 +- fs/iomap/buffered-io.c | 518 +++++++++++++------------- fs/xfs/xfs_aops.c | 24 +- fs/xfs/xfs_icache.c | 2 + include/linux/bio.h | 56 ++- include/linux/iomap.h | 3 +- 9 files changed, 373 insertions(+), 278 deletions(-) -- 2.33.0
