drivers/md/md-linear.c

File Facts

System

Linux kernel

Corpus path

drivers/md/md-linear.c

Extension

.c

Size

8922 bytes

Lines

351

Domain

Driver Families

Bucket

drivers/md

Inferred role

Driver Families: exported/initcall integration point

Status

integration 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.
• Exports symbols or registers init work; inspect boot/module ordering and who consumes the exported contract.
• Allocates kernel memory; connect allocation flags and lifetime to context constraints.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/blkdev.h
• linux/seq_file.h
• linux/module.h
• linux/slab.h
• trace/events/block.h
• md.h

Detected Declarations

• struct dev_info
• struct linear_conf
• function linear_size
• function linear_set_limits
• function rdev_for_each
• function linear_run
• function linear_add
• function linear_free
• function linear_make_request
• function linear_status
• function linear_error
• function linear_quiesce
• function linear_init
• function linear_exit
• module init linear_init

Annotated Snippet

module_init(linear_init);
module_exit(linear_exit);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Linear device concatenation personality for MD (deprecated)");
MODULE_ALIAS("md-personality-1"); /* LINEAR - deprecated*/
MODULE_ALIAS("md-linear");
MODULE_ALIAS("md-level--1");

Annotation

• Immediate include surface: `linux/blkdev.h`, `linux/seq_file.h`, `linux/module.h`, `linux/slab.h`, `trace/events/block.h`, `md.h`.
• Detected declarations: `struct dev_info`, `struct linear_conf`, `function linear_size`, `function linear_set_limits`, `function rdev_for_each`, `function linear_run`, `function linear_add`, `function linear_free`, `function linear_make_request`, `function linear_status`.
• Atlas domain: Driver Families / drivers/md.
• Implementation status: integration 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.