This patchset adds support for folios larger than one page size in FUSE. This does not yet enable large folios, as that requires one last piece, which is for writeback to support large folios. Large folios for writeback will be done separately in a future patchset. Please see this [1] for more details, as well as benchmarks we can expect from enabling large folios. [1] https://lore.kernel.org/linux-fsdevel/CAJnrk1a8fP7JQRWNhq7uvM=k=RbKrW+V9bOj1CQo=v4ZoNGQ3w@xxxxxxxxxxxxxx/ Changelog: v3: https://lore.kernel.org/linux-fsdevel/20241213221818.322371-1-joannelkoong@xxxxxxxxx/ v3 -> v4: * Add Jeff's reviewed-bys * Drop writeback large folios changes, drop turning large folios on. These will be part of a separate future patchset v2: https://lore.kernel.org/linux-fsdevel/20241125220537.3663725-1-joannelkoong@xxxxxxxxx/ v2 -> v3: * Fix direct io parsing to check each extracted page instead of assuming all pages in a large folio will be used (Matthew) v1: https://lore.kernel.org/linux-fsdevel/20241109001258.2216604-1-joannelkoong@xxxxxxxxx/ v1 -> v2: * Change naming from "non-writeback write" to "writethrough write" * Fix deadlock for writethrough writes by calling fault_in_iov_iter_readable() * first before __filemap_get_folio() (Josef) * For readahead, retain original folio_size() for descs.length (Josef) * Use folio_zero_range() api in fuse_copy_folio() (Josef) * Add Josef's reviewed-bys Joanne Koong (10): fuse: support copying large folios fuse: support large folios for retrieves fuse: refactor fuse_fill_write_pages() fuse: support large folios for writethrough writes fuse: support large folios for folio reads fuse: support large folios for symlinks fuse: support large folios for stores fuse: support large folios for queued writes fuse: support large folios for readahead fuse: optimize direct io large folios processing fs/fuse/dev.c | 126 +++++++++++++++++++++-------------------- fs/fuse/dir.c | 8 +-- fs/fuse/file.c | 130 +++++++++++++++++++++++++++++-------------- fs/fuse/fuse_dev_i.h | 2 +- 4 files changed, 156 insertions(+), 110 deletions(-) -- 2.43.5
