fs/nilfs2/direct.h

File Facts

System

Linux kernel

Corpus path

fs/nilfs2/direct.h

Extension

.h

Size

634 bytes

Lines

29

Domain

Core OS

Bucket

VFS And Filesystem Core

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.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/types.h
• linux/buffer_head.h
• bmap.h

Detected Declarations

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

Annotated Snippet

#ifndef _NILFS_DIRECT_H
#define _NILFS_DIRECT_H

#include <linux/types.h>
#include <linux/buffer_head.h>
#include "bmap.h"


#define NILFS_DIRECT_NBLOCKS	(NILFS_BMAP_SIZE / sizeof(__le64) - 1)
#define NILFS_DIRECT_KEY_MIN	0
#define NILFS_DIRECT_KEY_MAX	(NILFS_DIRECT_NBLOCKS - 1)


int nilfs_direct_init(struct nilfs_bmap *);
int nilfs_direct_delete_and_convert(struct nilfs_bmap *, __u64, __u64 *,
				    __u64 *, int);


#endif	/* _NILFS_DIRECT_H */

Annotation

• Immediate include surface: `linux/types.h`, `linux/buffer_head.h`, `bmap.h`.
• Atlas domain: Core OS / VFS And Filesystem Core.
• 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.