1 #ifndef _LINUX_SWAPFILE_H 2 #define _LINUX_SWAPFILE_H 3 4 /* 5 * these were static in swapfile.c but frontswap.c needs them and we don't 6 * want to expose them to the dozens of source files that include swap.h 7 */ 8 extern spinlock_t swap_lock; 9 extern struct plist_head swap_active_head; 10 extern struct swap_info_struct *swap_info[]; 11 extern int try_to_unuse(unsigned int, bool, unsigned long); 12 13 #endif /* _LINUX_SWAPFILE_H */ 14