page_swapcount 464 include/linux/swap.h extern int page_swapcount(struct page *); page_swapcount 1571 mm/swapfile.c return page_swapcount(page) != 0; page_swapcount 1597 mm/swapfile.c swapcount = page_swapcount(page); page_swapcount 1667 mm/swapfile.c total_swapcount == page_swapcount(page))) {