include/linux/root_dev.h

File Facts

System

Linux kernel

Corpus path

include/linux/root_dev.h

Extension

.h

Size

361 bytes

Lines

19

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.

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

Dependency Surface

• linux/major.h
• linux/types.h
• linux/kdev_t.h

Detected Declarations

• No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

#ifndef _ROOT_DEV_H_
#define _ROOT_DEV_H_

#include <linux/major.h>
#include <linux/types.h>
#include <linux/kdev_t.h>

enum {
	Root_NFS = MKDEV(UNNAMED_MAJOR, 255),
	Root_CIFS = MKDEV(UNNAMED_MAJOR, 254),
	Root_Generic = MKDEV(UNNAMED_MAJOR, 253),
	Root_RAM0 = MKDEV(RAMDISK_MAJOR, 0),
};

extern dev_t ROOT_DEV;

#endif

Annotation

• Immediate include surface: `linux/major.h`, `linux/types.h`, `linux/kdev_t.h`.
• Atlas domain: Core OS / Core Kernel Interface.
• Implementation status: source implementation candidate.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.