ubifs: Convert from invalidatepage to invalidate_folio

This is a straightfoward conversion.
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Tested-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Acked-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Tested-by: Mike Marshall <hubcap@omnibond.com> # orangefs
Tested-by: David Howells <dhowells@redhat.com> # afs

fs/ubifs/file.c

@@ -1287,25 +1287,25 @@ int ubifs_setattr(struct user_namespace *mnt_userns, struct dentry *dentry,
 	return err;
 }
 
-static void ubifs_invalidatepage(struct page *page, unsigned int offset,
-				 unsigned int length)
+static void ubifs_invalidate_folio(struct folio *folio, size_t offset,
+				 size_t length)
 {
-	struct inode *inode = page->mapping->host;
+	struct inode *inode = folio->mapping->host;
 	struct ubifs_info *c = inode->i_sb->s_fs_info;
 
-	ubifs_assert(c, PagePrivate(page));
-	if (offset || length < PAGE_SIZE)
-		/* Partial page remains dirty */
+	ubifs_assert(c, folio_test_private(folio));
+	if (offset || length < folio_size(folio))
+		/* Partial folio remains dirty */
 		return;
 
-	if (PageChecked(page))
+	if (folio_test_checked(folio))
 		release_new_page_budget(c);
 	else
 		release_existing_page_budget(c);
 
 	atomic_long_dec(&c->dirty_pg_cnt);
-	ClearPagePrivate(page);
-	ClearPageChecked(page);
+	folio_clear_private(folio);
+	folio_clear_checked(folio);
 }
 
 int ubifs_fsync(struct file *file, loff_t start, loff_t end, int datasync)
@@ -1646,7 +1646,7 @@ const struct address_space_operations ubifs_file_address_operations = {
 	.writepage      = ubifs_writepage,
 	.write_begin    = ubifs_write_begin,
 	.write_end      = ubifs_write_end,
-	.invalidatepage = ubifs_invalidatepage,
+	.invalidate_folio = ubifs_invalidate_folio,
 	.set_page_dirty = ubifs_set_page_dirty,
 #ifdef CONFIG_MIGRATION
 	.migratepage	= ubifs_migrate_page,