The callers have all been converted to work on folios, so convert
find_get_entries() to return a batch of folios instead of pages.
We also now return multiple large folios in a single call.
Signed-off-by: NMatthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: NJan Kara <jack@suse.cz>
Reviewed-by: NWilliam Kucharski <william.kucharski@oracle.com>
Reviewed-by: NChristoph Hellwig <hch@lst.de>