| #ifndef _LINUX_SWAPFILE_H |
| #define _LINUX_SWAPFILE_H |
| |
| /* |
| * these were static in swapfile.c but frontswap.c needs them and we don't |
| * want to expose them to the dozens of source files that include swap.h |
| */ |
| extern spinlock_t swap_lock; |
| extern struct plist_head swap_active_head; |
| extern spinlock_t swap_avail_lock; |
| extern struct plist_head swap_avail_head; |
| extern struct swap_info_struct *swap_info[]; |
| extern int try_to_unuse(unsigned int, bool, unsigned long); |
| extern int swap_ratio(struct swap_info_struct **si); |
| extern void setup_swap_ratio(struct swap_info_struct *p, int prio); |
| extern bool is_swap_ratio_group(int prio); |
| extern unsigned long generic_max_swapfile_size(void); |
| extern unsigned long max_swapfile_size(void); |
| |
| #endif /* _LINUX_SWAPFILE_H */ |