include/linux/rw_hint.h

Source file repositories/reference/linux-study-clean/include/linux/rw_hint.h

File Facts

System
Linux kernel
Corpus path
include/linux/rw_hint.h
Extension
.h
Size
723 bytes
Lines
26
Domain
Core OS
Bucket
Core Kernel Interface
Inferred role
Core OS: implementation source
Status
source implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

Dependency Surface

Detected Declarations

Annotated Snippet

#ifndef _LINUX_RW_HINT_H
#define _LINUX_RW_HINT_H

#include <linux/build_bug.h>
#include <linux/compiler_attributes.h>
#include <uapi/linux/fcntl.h>

/* Block storage write lifetime hint values. */
enum rw_hint {
	WRITE_LIFE_NOT_SET	= RWH_WRITE_LIFE_NOT_SET,
	WRITE_LIFE_NONE		= RWH_WRITE_LIFE_NONE,
	WRITE_LIFE_SHORT	= RWH_WRITE_LIFE_SHORT,
	WRITE_LIFE_MEDIUM	= RWH_WRITE_LIFE_MEDIUM,
	WRITE_LIFE_LONG		= RWH_WRITE_LIFE_LONG,
	WRITE_LIFE_EXTREME	= RWH_WRITE_LIFE_EXTREME,
	WRITE_LIFE_HINT_NR,
} __packed;

/* Sparse ignores __packed annotations on enums, hence the #ifndef below. */
#ifndef __CHECKER__
static_assert(sizeof(enum rw_hint) == 1);
#endif

#endif /* _LINUX_RW_HINT_H */

Annotation

Implementation Notes