drivers/md/raid10.c

File Facts

System

Linux kernel

Corpus path

drivers/md/raid10.c

Extension

.c

Size

141726 bytes

Lines

5101

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.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• 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/slab.h
• linux/delay.h
• linux/blkdev.h
• linux/module.h
• linux/seq_file.h
• linux/ratelimit.h
• linux/kthread.h
• linux/raid/md_p.h
• trace/events/block.h
• md.h
• raid10.h
• raid0.h
• md-bitmap.h
• md-cluster.h
• raid1-10.c

Detected Declarations

• enum geo_type
• function cmd_after
• function r10bio_pool_alloc
• function write
• function r10buf_pool_free
• function put_all_bios
• function free_r10bio
• function put_buf
• function wake_up_barrier
• function reschedule_retry
• function raid_end_bio_io
• function update_head_pos
• function find_bio_disk
• function raid10_end_read_request
• function close_write
• function one_write_done
• function raid10_end_write_request
• function __raid10_find_phys
• function raid10_find_phys
• function raid10_find_virt
• function flush_pending_writes
• function raise_barrier
• function lower_barrier
• function stop_waiting_barrier
• function raid10d
• function wait_barrier_nolock
• function wait_barrier
• function allow_barrier
• function freeze_array
• function unfreeze_array
• function choose_data_offset
• function raid10_unplug
• function regular_request_wait
• function raid10_read_request
• function raid10_write_one_disk
• function wait_blocked_dev
• function raid10_write_request
• function __make_request
• function raid_end_discard_bio
• function raid10_end_discard_request
• function raid10_handle_discard
• function raid10_make_request
• function raid10_status
• function _enough
• function enough
• function raid10_error
• function print_conf
• function close_sync

Annotated Snippet

module_init(raid10_init);
module_exit(raid10_exit);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("RAID10 (striped mirror) personality for MD");
MODULE_ALIAS("md-personality-9"); /* RAID10 */
MODULE_ALIAS("md-raid10");
MODULE_ALIAS("md-level-10");

Annotation

• Immediate include surface: `linux/slab.h`, `linux/delay.h`, `linux/blkdev.h`, `linux/module.h`, `linux/seq_file.h`, `linux/ratelimit.h`, `linux/kthread.h`, `linux/raid/md_p.h`.
• Detected declarations: `enum geo_type`, `function cmd_after`, `function r10bio_pool_alloc`, `function write`, `function r10buf_pool_free`, `function put_all_bios`, `function free_r10bio`, `function put_buf`, `function wake_up_barrier`, `function reschedule_retry`.
• Atlas domain: Driver Families / drivers/md.
• Implementation status: integration 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.