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. Most of these patches have been posted before and I've retained acks/reviews where I thought them reasonable. Some patches are new. 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. I intend to push patch 1 upstream myself (before 5.16), but I've included it here to avoid nasty messages from the build-bots. I can probably persuade Linus to take patches 2-4 as well if Darrick's not comfortable taking them as part of the iomap changes. These changes are also available at: git://git.infradead.org/users/willy/pagecache.git heads/folio-iomap I intend to rebase that branch to include any further R-b tags (some of the patches are new and don't have reviews). Matthew Wilcox (Oracle) (28): csky,sparc: Declare flush_dcache_folio() mm: Add functions to zero portions of a folio fs: Remove FS_THP_SUPPORT fs: Rename AS_THP_SUPPORT and mapping_thp_support 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: 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 multi-page folios in invalidatepage xfs: Support multi-page folios Documentation/core-api/kernel-api.rst | 1 + arch/csky/abiv1/inc/abi/cacheflush.h | 1 + arch/csky/abiv2/inc/abi/cacheflush.h | 2 + arch/sparc/include/asm/cacheflush_32.h | 1 + arch/sparc/include/asm/cacheflush_64.h | 1 + block/bio.c | 22 ++ fs/buffer.c | 22 +- fs/inode.c | 2 - fs/internal.h | 2 +- fs/iomap/buffered-io.c | 506 +++++++++++++------------ fs/xfs/xfs_aops.c | 24 +- fs/xfs/xfs_icache.c | 2 + include/linux/bio.h | 56 ++- include/linux/fs.h | 1 - include/linux/highmem.h | 44 ++- include/linux/iomap.h | 3 +- include/linux/pagemap.h | 26 +- mm/highmem.c | 2 - mm/shmem.c | 3 +- 19 files changed, 431 insertions(+), 290 deletions(-) -- 2.33.0
