include/linux/fiemap.h

File Facts

System

Linux kernel

Corpus path

include/linux/fiemap.h

Extension

.h

Size

831 bytes

Lines

28

Domain

Core OS

Bucket

Core Kernel Interface

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

• uapi/linux/fiemap.h
• linux/fs.h

Detected Declarations

• struct fiemap_extent_info

Annotated Snippet

struct fiemap_extent_info {
	unsigned int fi_flags;
	unsigned int fi_extents_mapped;
	unsigned int fi_extents_max;
	struct fiemap_extent __user *fi_extents_start;
};

int fiemap_prep(struct inode *inode, struct fiemap_extent_info *fieinfo,
		u64 start, u64 *len, u32 supported_flags);
int fiemap_fill_next_extent(struct fiemap_extent_info *info, u64 logical,
			    u64 phys, u64 len, u32 flags);

#endif /* _LINUX_FIEMAP_H 1 */

Annotation

• Immediate include surface: `uapi/linux/fiemap.h`, `linux/fs.h`.
• Detected declarations: `struct fiemap_extent_info`.
• Atlas domain: Core OS / Core Kernel Interface.
• 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.