mpage: use b_folio in do_mpage_readpage()

Remove this conversion of a folio back to a page.

Link: https://lkml.kernel.org/r/20221215214402.3522366-13-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/fs/mpage.c b/fs/mpage.c
index 0f8ae95..db59cbf 100644 (file)
--- a/fs/mpage.c
+++ b/fs/mpage.c
@@ -198,7 +198,7 @@ static struct bio *do_mpage_readpage(struct mpage_readpage_args *args)
        /*
         * Then do more get_blocks calls until we are done with this folio.
         */
-       map_bh->b_page = &folio->page;
+       map_bh->b_folio = folio;
        while (page_block < blocks_per_page) {
                map_bh->b_state = 0;
                map_bh->b_size = 0;