jfs: Remove reference to bh->b_page

Buffer heads are attached to folios, not to pages.  Also
flush_dcache_page() is now deprecated in favour of flush_dcache_folio().

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>

fs/jfs/super.c

@@ -766,7 +766,7 @@ static ssize_t jfs_quota_write(struct super_block *sb, int type,
 		}
 		lock_buffer(bh);
 		memcpy(bh->b_data+offset, data, tocopy);
-		flush_dcache_page(bh->b_page);
+		flush_dcache_folio(bh->b_folio);
 		set_buffer_uptodate(bh);
 		mark_buffer_dirty(bh);
 		unlock_buffer(bh);