fs/nilfs2/dat.h

File Facts

System

Linux kernel

Corpus path

fs/nilfs2/dat.h

Extension

.h

Size

1763 bytes

Lines

48

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
• linux/fs.h
• linux/nilfs2_ondisk.h

Detected Declarations

• struct nilfs_palloc_req

Annotated Snippet

#ifndef _NILFS_DAT_H
#define _NILFS_DAT_H

#include <linux/types.h>
#include <linux/buffer_head.h>
#include <linux/fs.h>
#include <linux/nilfs2_ondisk.h>	/* nilfs_inode, nilfs_checkpoint */


struct nilfs_palloc_req;

int nilfs_dat_translate(struct inode *, __u64, sector_t *);

int nilfs_dat_prepare_alloc(struct inode *, struct nilfs_palloc_req *);
void nilfs_dat_commit_alloc(struct inode *, struct nilfs_palloc_req *);
void nilfs_dat_abort_alloc(struct inode *, struct nilfs_palloc_req *);
int nilfs_dat_prepare_start(struct inode *, struct nilfs_palloc_req *);
void nilfs_dat_commit_start(struct inode *, struct nilfs_palloc_req *,
			    sector_t);
int nilfs_dat_prepare_end(struct inode *, struct nilfs_palloc_req *);
void nilfs_dat_commit_end(struct inode *, struct nilfs_palloc_req *, int);
void nilfs_dat_abort_end(struct inode *, struct nilfs_palloc_req *);
int nilfs_dat_prepare_update(struct inode *, struct nilfs_palloc_req *,
			     struct nilfs_palloc_req *);
void nilfs_dat_commit_update(struct inode *, struct nilfs_palloc_req *,
			     struct nilfs_palloc_req *, int);
void nilfs_dat_abort_update(struct inode *, struct nilfs_palloc_req *,
			    struct nilfs_palloc_req *);

int nilfs_dat_mark_dirty(struct inode *, __u64);
int nilfs_dat_freev(struct inode *, __u64 *, size_t);
int nilfs_dat_move(struct inode *, __u64, sector_t);
ssize_t nilfs_dat_get_vinfo(struct inode *, void *, unsigned int, size_t);

int nilfs_dat_read(struct super_block *sb, size_t entry_size,
		   struct nilfs_inode *raw_inode, struct inode **inodep);

#endif	/* _NILFS_DAT_H */

Annotation

• Immediate include surface: `linux/types.h`, `linux/buffer_head.h`, `linux/fs.h`, `linux/nilfs2_ondisk.h`.
• Detected declarations: `struct nilfs_palloc_req`.
• 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.