linux-master/mm/swapfile.c

560  * The cluster corresponding to page_nr will be used. The cluster will be
564 	struct swap_cluster_info *cluster_info, unsigned long page_nr)
566 	unsigned long idx = page_nr / SWAPFILE_CLUSTER;
579  * The cluster corresponding to page_nr decreases one usage. If the usage
584 	struct swap_cluster_info *cluster_info, unsigned long page_nr)
586 	unsigned long idx = page_nr / SWAPFILE_CLUSTER;
2939 		unsigned int page_nr = swap_header->info.badpages[i];
2940 		if (page_nr == 0 || page_nr > swap_header->info.last_page)
2942 		if (page_nr < maxpages) {
2943 			swap_map[page_nr] = SWAP_MAP_BAD;
2949 			inc_cluster_info_page(p, cluster_info, page_nr);