fs/btrfs/export.h

File Facts

System

Linux kernel

Corpus path

fs/btrfs/export.h

Extension

.h

Size

568 bytes

Lines

30

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/exportfs.h
• linux/types.h

Detected Declarations

• struct dentry
• struct super_block
• struct btrfs_fid

Annotated Snippet

struct btrfs_fid {
	u64 objectid;
	u64 root_objectid;
	u32 gen;

	u64 parent_objectid;
	u32 parent_gen;

	u64 parent_root_objectid;
} __attribute__ ((packed));

struct dentry *btrfs_get_dentry(struct super_block *sb, u64 objectid,
				u64 root_objectid, u64 generation);
struct dentry *btrfs_get_parent(struct dentry *child);

#endif

Annotation

• Immediate include surface: `linux/exportfs.h`, `linux/types.h`.
• Detected declarations: `struct dentry`, `struct super_block`, `struct btrfs_fid`.
• 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.