secretmem: Convert to free_folio

Prepare for any size of folio, even though secretmem only uses order-0
folios for now.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>

diff --git a/mm/secretmem.c b/mm/secretmem.c
index 3b3cf2892b6ae8a7f5da0ce28030ac45e09b51ca..206ed6b40c1d0fcfbb6abcbced65581c647c1892 100644 (file)
--- a/mm/secretmem.c
+++ b/mm/secretmem.c
@@ -145,15 +145,15 @@ static int secretmem_migratepage(struct address_space *mapping,
        return -EBUSY;
 }
 
-static void secretmem_freepage(struct page *page)
+static void secretmem_free_folio(struct folio *folio)
 {
-       set_direct_map_default_noflush(page);
-       clear_highpage(page);
+       set_direct_map_default_noflush(&folio->page);
+       folio_zero_segment(folio, 0, folio_size(folio));
 }
 
 const struct address_space_operations secretmem_aops = {
        .dirty_folio    = noop_dirty_folio,
-       .freepage       = secretmem_freepage,
+       .free_folio     = secretmem_free_folio,
        .migratepage    = secretmem_migratepage,
        .isolate_page   = secretmem_isolate_page,
 };