fs/xfs/libxfs/xfs_bit.h

File Facts

System

Linux kernel

Corpus path

fs/xfs/libxfs/xfs_bit.h

Extension

.h

Size

1577 bytes

Lines

76

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.

Dependency Surface

• No C-style include directives detected by the generator.

Detected Declarations

• function Copyright
• function xfs_mask32lo
• function xfs_mask64lo
• function xfs_highbit32
• function xfs_highbit64
• function xfs_lowbit32
• function xfs_lowbit64

Annotated Snippet

if (w) {
			n = ffs(w);
			if (n)
				n += 32;
		}
	}
	return n - 1;
}

/* Return whether bitmap is empty (1 == empty) */
extern int xfs_bitmap_empty(uint *map, uint size);

/* Count continuous one bits in map starting with start_bit */
extern int xfs_contig_bits(uint *map, uint size, uint start_bit);

/* Find next set bit in map */
extern int xfs_next_bit(uint *map, uint size, uint start_bit);

#endif	/* __XFS_BIT_H__ */

Annotation

• Detected declarations: `function Copyright`, `function xfs_mask32lo`, `function xfs_mask64lo`, `function xfs_highbit32`, `function xfs_highbit64`, `function xfs_lowbit32`, `function xfs_lowbit64`.
• 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.