f2fs: convert the ->private flag helpers to folio-only

page-based ->private flag helpers are used in the compression path, where
large folios are not enabled.  They can use folio versions with
page_folio().  The two remaining users in data.c and segment.c can use
fio->folio instead of fio->page (two are in a union).

Drop page-based helpers after the conversion and rename
PAGE_PRIVATE_{GET,SET,CLEAR}_FUNC() and the PAGE_PRIVATE_* flags to
F2FS_FOLIO_PRIVATE_* to match.  Convert the folio/page union from
f2fs_io_info union to folio only, since no page user is left.

The folio helpers do a plain read-modify-write where the page ones used
set_bit()/clear_bit().  It is fine because the converted code either holds
folio lock or, in f2fs_compress_write_end_io(), matches what the
non-compressed code does in f2fs_write_end_bio().

Link: https://lore.kernel.org/20260920-remove-pg_private-v5-7-bb68b6a21869@nvidia.com
Signed-off-by: Zi Yan <ziy@nvidia.com>
Co-developed-by: David Hildenbrand (Arm) <david@kernel.org>
Signed-off-by: David Hildenbrand (Arm) <david@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Suggested-by: Tal Zussman <tz2294@columbia.edu>
Reviewed-by: Tal Zussman <tz2294@columbia.edu>
Reviewed-by: Lance Yang <lance.yang@linux.dev>
Reviewed-by: Chao Yu <chao@kernel.org>
Assisted-by: LLM
Cc: Jaegeuk Kim <jaegeuk@kernel.org>

0 files changed, 0 insertions, 0 deletions