#ifndef LINUX_KERNEL_PAGE_FLAGS_H
  #define LINUX_KERNEL_PAGE_FLAGS_H
  
  /*
   * Stable page flag bits exported to user space
   */
  
  #define KPF_LOCKED		0
  #define KPF_ERROR		1
  #define KPF_REFERENCED		2
  #define KPF_UPTODATE		3
  #define KPF_DIRTY		4
  #define KPF_LRU			5
  #define KPF_ACTIVE		6
  #define KPF_SLAB		7
  #define KPF_WRITEBACK		8
  #define KPF_RECLAIM		9
  #define KPF_BUDDY		10
  
  /* 11-20: new additions in 2.6.31 */
  #define KPF_MMAP		11
  #define KPF_ANON		12
  #define KPF_SWAPCACHE		13
  #define KPF_SWAPBACKED		14
  #define KPF_COMPOUND_HEAD	15
  #define KPF_COMPOUND_TAIL	16
  #define KPF_HUGE		17
  #define KPF_UNEVICTABLE		18
  #define KPF_HWPOISON		19
  #define KPF_NOPAGE		20
  
  #define KPF_KSM			21
  
  /* kernel hacking assistances
   * WARNING: subject to change, never rely on them!
   */
  #define KPF_RESERVED		32
  #define KPF_MLOCKED		33
  #define KPF_MAPPEDTODISK	34
  #define KPF_PRIVATE		35
  #define KPF_PRIVATE_2		36
  #define KPF_OWNER_PRIVATE	37
  #define KPF_ARCH		38
  #define KPF_UNCACHED		39
  
  #endif /* LINUX_KERNEL_PAGE_FLAGS_H */