LXR linux/include/linux/swap

   1#ifndef __LINUX_SWAP_CGROUP_H
   2#define __LINUX_SWAP_CGROUP_H
   3
   4#include <linux/swap.h>
   5
   6#ifdef CONFIG_MEMCG_SWAP
   7
   8extern unsigned short swap_cgroup_cmpxchg(swp_entry_t ent,
   9                                        unsigned short old, unsigned short new);
  10extern unsigned short swap_cgroup_record(swp_entry_t ent, unsigned short id);
  11extern unsigned short lookup_swap_cgroup_id(swp_entry_t ent);
  12extern int swap_cgroup_swapon(int type, unsigned long max_pages);
  13extern void swap_cgroup_swapoff(int type);
  14
  15#else
  16
  17static inline
  18unsigned short swap_cgroup_record(swp_entry_t ent, unsigned short id)
  19{
  20        return 0;
  21}
  22
  23static inline
  24unsigned short lookup_swap_cgroup_id(swp_entry_t ent)
  25{
  26        return 0;
  27}
  28
  29static inline int
  30swap_cgroup_swapon(int type, unsigned long max_pages)
  31{
  32        return 0;
  33}
  34
  35static inline void swap_cgroup_swapoff(int type)
  36{
  37        return;
  38}
  39
  40#endif /* CONFIG_MEMCG_SWAP */
  41
  42#endif /* __LINUX_SWAP_CGROUP_H */
  43