Edit File: swapfile.h
#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 struct swap_info_struct *swap_info[]; extern int try_to_unuse(unsigned int, bool, unsigned long); extern unsigned long generic_max_swapfile_size(void); extern unsigned long max_swapfile_size(void); #endif /* _LINUX_SWAPFILE_H */