include/uapi/linux/pg.h

File Facts

System

Linux kernel

Corpus path

include/uapi/linux/pg.h

Extension

.h

Size

2409 bytes

Lines

68

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

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

Detected Declarations

• struct pg_write_hdr
• struct pg_read_hdr

Annotated Snippet

struct pg_write_hdr {

	char	magic;		/* == PG_MAGIC */
	char	func;		/* PG_RESET or PG_COMMAND */
	int     dlen;		/* number of bytes expected to transfer */
	int     timeout;	/* number of seconds before timeout */
	char	packet[12];	/* packet command */

};

struct pg_read_hdr {

	char	magic;		/* == PG_MAGIC */
	char	scsi;		/* "scsi" status == sense key */
	int	dlen;		/* size of device transfer request */
	int     duration;	/* time in seconds command took */
	char    pad[12];	/* not used */

};

#endif /* _UAPI_LINUX_PG_H */

Annotation

• Detected declarations: `struct pg_write_hdr`, `struct pg_read_hdr`.
• 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.