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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 */