fs/btrfs/dev-replace.h

File Facts

System

Linux kernel

Corpus path

fs/btrfs/dev-replace.h

Extension

.h

Size

1405 bytes

Lines

42

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/compiler_types.h

Detected Declarations

• struct btrfs_ioctl_dev_replace_args
• struct btrfs_fs_info
• struct btrfs_trans_handle
• struct btrfs_dev_replace
• struct btrfs_block_group
• struct btrfs_device
• function btrfs_bio_counter_dec

Annotated Snippet

#ifndef BTRFS_DEV_REPLACE_H
#define BTRFS_DEV_REPLACE_H

#include <linux/types.h>
#include <linux/compiler_types.h>

struct btrfs_ioctl_dev_replace_args;
struct btrfs_fs_info;
struct btrfs_trans_handle;
struct btrfs_dev_replace;
struct btrfs_block_group;
struct btrfs_device;

int btrfs_init_dev_replace(struct btrfs_fs_info *fs_info);
int btrfs_run_dev_replace(struct btrfs_trans_handle *trans);
int btrfs_dev_replace_by_ioctl(struct btrfs_fs_info *fs_info,
			    struct btrfs_ioctl_dev_replace_args *args);
void btrfs_dev_replace_status(struct btrfs_fs_info *fs_info,
			      struct btrfs_ioctl_dev_replace_args *args);
int btrfs_dev_replace_cancel(struct btrfs_fs_info *fs_info);
void btrfs_dev_replace_suspend_for_unmount(struct btrfs_fs_info *fs_info);
int btrfs_resume_dev_replace_async(struct btrfs_fs_info *fs_info);
bool __pure btrfs_dev_replace_is_ongoing(struct btrfs_dev_replace *dev_replace);
bool btrfs_finish_block_group_to_copy(struct btrfs_device *srcdev,
				      struct btrfs_block_group *cache,
				      u64 physical);
void btrfs_bio_counter_inc_blocked(struct btrfs_fs_info *fs_info);
void btrfs_bio_counter_sub(struct btrfs_fs_info *fs_info, s64 amount);

static inline void btrfs_bio_counter_dec(struct btrfs_fs_info *fs_info)
{
	btrfs_bio_counter_sub(fs_info, 1);
}


#endif

Annotation

• Immediate include surface: `linux/types.h`, `linux/compiler_types.h`.
• Detected declarations: `struct btrfs_ioctl_dev_replace_args`, `struct btrfs_fs_info`, `struct btrfs_trans_handle`, `struct btrfs_dev_replace`, `struct btrfs_block_group`, `struct btrfs_device`, `function btrfs_bio_counter_dec`.
• 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.