fs/xfs/xfs_buf_item.h

File Facts

System

Linux kernel

Corpus path

fs/xfs/xfs_buf_item.h

Extension

.h

Size

2298 bytes

Lines

72

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.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• 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 xfs_buf
• struct xfs_mount
• struct xfs_buf_log_item
• function xfs_buf_dquot_iodone

Annotated Snippet

struct xfs_buf_log_item {
	struct xfs_log_item	bli_item;	/* common item structure */
	struct xfs_buf		*bli_buf;	/* real buffer pointer */
	unsigned int		bli_flags;	/* misc flags */
	unsigned int		bli_recur;	/* lock recursion count */
	atomic_t		bli_refcount;	/* cnt of tp refs */
	int			bli_format_count;	/* count of headers */
	struct xfs_buf_log_format *bli_formats;	/* array of in-log header ptrs */
	struct xfs_buf_log_format __bli_format;	/* embedded in-log header */
};

int	xfs_buf_item_init(struct xfs_buf *, struct xfs_mount *);
void	xfs_buf_item_done(struct xfs_buf *bp);
void	xfs_buf_item_put(struct xfs_buf_log_item *bip);
void	xfs_buf_item_log(struct xfs_buf_log_item *, uint, uint);
bool	xfs_buf_item_dirty_format(struct xfs_buf_log_item *);
void	xfs_buf_inode_iodone(struct xfs_buf *);
#ifdef CONFIG_XFS_QUOTA
void	xfs_buf_dquot_iodone(struct xfs_buf *);
#else
static inline void xfs_buf_dquot_iodone(struct xfs_buf *bp)
{
}
#endif /* CONFIG_XFS_QUOTA */
void	xfs_buf_iodone(struct xfs_buf *);
bool	xfs_buf_log_check_iovec(struct kvec *iovec);

unsigned int xfs_buf_inval_log_space(unsigned int map_count,
		unsigned int blocksize);

extern struct kmem_cache	*xfs_buf_item_cache;

#endif	/* __XFS_BUF_ITEM_H__ */

Annotation

• Detected declarations: `struct xfs_buf`, `struct xfs_mount`, `struct xfs_buf_log_item`, `function xfs_buf_dquot_iodone`.
• Atlas domain: Core OS / VFS And Filesystem Core.
• Implementation status: source implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.

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.