__swap_writepage  391 include/linux/swap.h extern int __swap_writepage(struct page *page, struct writeback_control *wbc,
__swap_writepage  258 mm/page_io.c   	ret = __swap_writepage(page, wbc, end_swap_bio_write);
__swap_writepage  907 mm/zswap.c     	__swap_writepage(page, &wbc, end_swap_bio_write);