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 */
9extern spinlock_t swap_lock;
10extern struct plist_head swap_active_head;
11extern struct swap_info_struct *swap_info[];
12extern int try_to_unuse(unsigned int, bool, unsigned long);
13extern unsigned long generic_max_swapfile_size(void);
14extern unsigned long max_swapfile_size(void);
15
16#endif /* _LINUX_SWAPFILE_H */
17