ubifs: Use a folio in ubifs_do_bulk_read()

When looking in the page cache, retrieve a folio instead of a page.
This would need some work to make it safe for large folios.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Zhihao Cheng <chengzhihao1@huawei.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
1 file changed