1#ifndef _SYS_SWAP_H 2#define _SYS_SWAP_H 3 4#ifdef __cplusplus 5extern "C" { 6#endif 7 8 9#define SWAP_FLAG_PREFER 0x8000 10#define SWAP_FLAG_PRIO_MASK 0x7fff 11#define SWAP_FLAG_PRIO_SHIFT 0 12#define SWAP_FLAG_DISCARD 0x10000 13 14int swapon (const char *, int); 15int swapoff (const char *); 16 17#ifdef __cplusplus 18} 19#endif 20 21#endif 22