LU-16327 llite: read_folio, release_folio, filler_t

LU-16327 llite: read_folio, release_folio, filler_t

Linux commit v5.18-rc5-221-gb7446e7cf15f
  fs: Remove aop flags parameter from grab_cache_page_write_begin()
flags have been dropped from write_begin() and
grab_cache_page_write_begin()

Linux commit v5.18-rc5-241-g5efe7448a142
  fs: Introduce aops->read_folio
Provide a ll_read_folio handler around ll_readpage

Linux commit v5.18-rc5-280-ge9b5b23e957e
  fs: Change the type of filler_t
Affects read_cache_page, provides a wrapper for read_cache_page
and wrappers for filler functions

Linux commit v5.18-rc5-282-gfa29000b6b26
  fs: Add aops->release_folio
Provide an ll_release_folio function based on ll_releasepage

Test-Parameters: trivial
HPE-bug-id: LUS-11357
Signed-off-by: Shaun Tancheff <shaun.tancheff@hpe.com>
Change-Id: Ibd4ec1133c80cd0eb8400c4cd07b50e421dd35c5
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/49199
Tested-by: Oleg Drokin <green@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>