1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _LINUX_SWAPFILE_H 3 #define _LINUX_SWAPFILE_H 4 5 /* 6 * these were static in swapfile.c but frontswap.c needs them and we don't 7 * want to expose them to the dozens of source files that include swap.h 8 */ 9 extern spinlock_t swap_lock; 10 extern struct plist_head swap_active_head; 11 extern struct swap_info_struct *swap_info[]; 12 extern int try_to_unuse(unsigned int, bool, unsigned long); 13 14 #endif /* _LINUX_SWAPFILE_H */ 15