drivers/md/md-cluster.h

File Facts

System

Linux kernel

Corpus path

drivers/md/md-cluster.h

Extension

.h

Size

1694 bytes

Lines

45

Domain

Driver Families

Bucket

drivers/md

Inferred role

Driver Families: implementation source

Status

source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

• Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• md.h

Detected Declarations

• struct mddev
• struct md_rdev
• struct md_cluster_operations

Annotated Snippet

struct md_cluster_operations {
	struct md_submodule_head head;

	int (*join)(struct mddev *mddev, int nodes);
	int (*leave)(struct mddev *mddev);
	int (*slot_number)(struct mddev *mddev);
	int (*resync_info_update)(struct mddev *mddev, sector_t lo, sector_t hi);
	int (*resync_start_notify)(struct mddev *mddev);
	int (*resync_status_get)(struct mddev *mddev);
	void (*resync_info_get)(struct mddev *mddev, sector_t *lo, sector_t *hi);
	int (*metadata_update_start)(struct mddev *mddev);
	int (*metadata_update_finish)(struct mddev *mddev);
	void (*metadata_update_cancel)(struct mddev *mddev);
	int (*resync_start)(struct mddev *mddev);
	int (*resync_finish)(struct mddev *mddev);
	int (*area_resyncing)(struct mddev *mddev, int direction, sector_t lo, sector_t hi);
	int (*add_new_disk)(struct mddev *mddev, struct md_rdev *rdev);
	void (*add_new_disk_cancel)(struct mddev *mddev);
	int (*new_disk_ack)(struct mddev *mddev, bool ack);
	int (*remove_disk)(struct mddev *mddev, struct md_rdev *rdev);
	void (*load_bitmaps)(struct mddev *mddev, int total_slots);
	int (*gather_bitmaps)(struct md_rdev *rdev);
	int (*resize_bitmaps)(struct mddev *mddev, sector_t newsize, sector_t oldsize);
	int (*lock_all_bitmaps)(struct mddev *mddev);
	void (*unlock_all_bitmaps)(struct mddev *mddev);
	void (*update_size)(struct mddev *mddev, sector_t old_dev_sectors);
};

extern int md_setup_cluster(struct mddev *mddev, int nodes);
extern void md_cluster_stop(struct mddev *mddev);
extern void md_reload_sb(struct mddev *mddev, int raid_disk);

#endif /* _MD_CLUSTER_H */

Annotation

• Immediate include surface: `md.h`.
• Detected declarations: `struct mddev`, `struct md_rdev`, `struct md_cluster_operations`.
• Atlas domain: Driver Families / drivers/md.
• 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.