fs/btrfs/direct-io.h

File Facts

System

Linux kernel

Corpus path

fs/btrfs/direct-io.h

Extension

.h

Size

376 bytes

Lines

17

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

Detected Declarations

• struct kiocb

Annotated Snippet

#ifndef BTRFS_DIRECT_IO_H
#define BTRFS_DIRECT_IO_H

#include <linux/types.h>

struct kiocb;

int __init btrfs_init_dio(void);
void __cold btrfs_destroy_dio(void);

ssize_t btrfs_direct_write(struct kiocb *iocb, struct iov_iter *from);
ssize_t btrfs_direct_read(struct kiocb *iocb, struct iov_iter *to);

#endif /* BTRFS_DIRECT_IO_H */

Annotation

• Immediate include surface: `linux/types.h`.
• Detected declarations: `struct kiocb`.
• 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.