drivers/md/raid0.c

File Facts

System

Linux kernel

Corpus path

drivers/md/raid0.c

Extension

.c

Size

22547 bytes

Lines

844

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
• linux/string_choices.h
• trace/events/block.h
• md.h
• raid0.h
• raid5.h

Detected Declarations

• function dump_zones
• function create_strip_zones
• function rdev_for_each
• function raid0_size
• function raid0_free
• function raid0_set_limits
• function raid0_run
• function map_disk_shift
• function raid0_handle_discard
• function raid0_map_submit_bio
• function raid0_make_request
• function raid0_status
• function raid0_error
• function rdev_for_each
• function raid0_quiesce
• function raid0_init
• function raid0_exit
• module init raid0_init

Annotated Snippet

module_init(raid0_init);
module_exit(raid0_exit);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("RAID0 (striping) personality for MD");
MODULE_ALIAS("md-personality-2"); /* RAID0 */
MODULE_ALIAS("md-raid0");
MODULE_ALIAS("md-level-0");

Annotation

• Immediate include surface: `linux/blkdev.h`, `linux/seq_file.h`, `linux/module.h`, `linux/slab.h`, `linux/string_choices.h`, `trace/events/block.h`, `md.h`, `raid0.h`.
• Detected declarations: `function dump_zones`, `function create_strip_zones`, `function rdev_for_each`, `function raid0_size`, `function raid0_free`, `function raid0_set_limits`, `function raid0_run`, `function map_disk_shift`, `function raid0_handle_discard`, `function raid0_map_submit_bio`.
• 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.