include/linux/swapfile.h

   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 */