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 WRITE_LIFE_HINT_NR, 18 } __packed; 19 20 /* Sparse ignores __packed annotations on enums, hence the #ifndef below. */ 21 #ifndef __CHECKER__ 22 static_assert(sizeof(enum rw_hint) == 1); 23 #endif 24 25 #endif /* _LINUX_RW_HINT_H */ 26