bcachefs: bch2_readahead() large folio conversion

Readahead now uses the new filemap_get_contig_folios_d() helper.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2023-03-17 19:24:44 -04:00
commit 9567413c82