include/linux/rw_hint.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _LINUX_RW_HINT_H
   3 #define _LINUX_RW_HINT_H
   4
   5 #include <linux/build_bug.h>
   6 #include <linux/compiler_attributes.h>
   7 #include <uapi/linux/fcntl.h>
   8
   9 /* Block storage write lifetime hint values. */
  10 enum rw_hint {
  11         WRITE_LIFE_NOT_SET      = RWH_WRITE_LIFE_NOT_SET,
  12         WRITE_LIFE_NONE         = RWH_WRITE_LIFE_NONE,
  13         WRITE_LIFE_SHORT        = RWH_WRITE_LIFE_SHORT,
  14         WRITE_LIFE_MEDIUM       = RWH_WRITE_LIFE_MEDIUM,
  15         WRITE_LIFE_LONG         = RWH_WRITE_LIFE_LONG,
  16         WRITE_LIFE_EXTREME      = RWH_WRITE_LIFE_EXTREME,
  17 } __packed;
  18
  19 /* Sparse ignores __packed annotations on enums, hence the #ifndef below. */
  20 #ifndef __CHECKER__
  21 static_assert(sizeof(enum rw_hint) == 1);
  22 #endif
  23
  24 #endif /* _LINUX_RW_HINT_H */