#ifndef __LINUX_SWAP_CGROUP_H #define __LINUX_SWAP_CGROUP_H #include <linux/swap.h> #ifdef CONFIG_MEMCG_SWAP extern unsigned short swap_cgroup_cmpxchg(swp_entry_t ent, unsigned short old, unsigned short new); extern unsigned short swap_cgroup_record(swp_entry_t ent, unsigned short id); extern unsigned short lookup_swap_cgroup_id(swp_entry_t ent); extern int swap_cgroup_swapon(int type, unsigned long max_pages); extern void swap_cgroup_swapoff(int type); #else static inline unsigned short swap_cgroup_record(swp_entry_t ent, unsigned short id) { return 0; } static inline unsigned short lookup_swap_cgroup_id(swp_entry_t ent) { return 0; } static inline int swap_cgroup_swapon(int type, unsigned long max_pages) { return 0; } static inline void swap_cgroup_swapoff(int type) { return; } #endif /* CONFIG_MEMCG_SWAP */ #endif /* __LINUX_SWAP_CGROUP_H */