This patchset converts fuse requests to use folios instead of pages. Right now, all folios in fuse are one page, but a subsequent patchset will be enabling larger-size folios on fuse. This patchset has no functional changes. Any multi-page allocations for requests (eg ioctl requests) will also be optimized in a subsequent patchset as well. v2: https://lore.kernel.org/linux-fsdevel/20241022185443.1891563-1-joannelkoong@xxxxxxxxx/ Changes from v2 -> v3: * Fix wrong variable use in fuse_retrieve, which was introduced in the v1 -> v2 variable name refactoring. v1: https://lore.kernel.org/linux-fsdevel/20241002165253.3872513-1-joannelkoong@xxxxxxxxx/ Changes from v1 -> v2: * Address Josef's comments on v1 - Clarify comment about folio replacement in page cache - Remove unused fuse_page_descs_length_init() and fuse_pages_alloc() - Copy comment to folio_mark_dirty_lock() * Add Josef's Reviewed-bys * Refactor page_set_dirty_lock() to use folio_mark_dirty_lock() * Keep using variable naming "nr_pages" in some places (eg fuse_direct_io) instead of "nr_folios" to make accounting more clear for max_pages, which reduce variable naming churn in subsequent patchset that supports large folio. Joanne Koong (13): fuse: support folios in struct fuse_args_pages and fuse_copy_pages() fuse: add support in virtio for requests using folios fuse: convert cuse to use folios fuse: convert readlink to use folios fuse: convert readdir to use folios fuse: convert reads to use folios fuse: convert writes (non-writeback) to use folios fuse: convert ioctls to use folios fuse: convert retrieves to use folios fuse: convert writebacks to use folios mm/writeback: add folio_mark_dirty_lock() fuse: convert direct io to use folios fuse: remove pages for requests and exclusively use folios fs/fuse/cuse.c | 31 ++--- fs/fuse/dev.c | 41 ++++--- fs/fuse/dir.c | 28 ++--- fs/fuse/file.c | 268 +++++++++++++++++++++++--------------------- fs/fuse/fuse_i.h | 36 +++--- fs/fuse/ioctl.c | 31 +++-- fs/fuse/readdir.c | 20 ++-- fs/fuse/virtio_fs.c | 58 +++++----- include/linux/mm.h | 1 + mm/folio-compat.c | 6 + mm/page-writeback.c | 22 ++-- 11 files changed, 291 insertions(+), 251 deletions(-) -- 2.43.5
