include/linux/secretmem.h

   1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2 #ifndef _LINUX_SECRETMEM_H
   3 #define _LINUX_SECRETMEM_H
   4
   5 #ifdef CONFIG_SECRETMEM
   6
   7 extern const struct address_space_operations secretmem_aops;
   8
   9 static inline bool secretmem_mapping(struct address_space *mapping)
  10 {
  11         return mapping->a_ops == &secretmem_aops;
  12 }
  13
  14 bool vma_is_secretmem(struct vm_area_struct *vma);
  15 bool secretmem_active(void);
  16
  17 #else
  18
  19 static inline bool vma_is_secretmem(struct vm_area_struct *vma)
  20 {
  21         return false;
  22 }
  23
  24 static inline bool secretmem_mapping(struct address_space *mapping)
  25 {
  26         return false;
  27 }
  28
  29 static inline bool secretmem_active(void)
  30 {
  31         return false;
  32 }
  33
  34 #endif /* CONFIG_SECRETMEM */
  35
  36 #endif /* _LINUX_SECRETMEM_H */