drivers/block/drbd/drbd_main.c

File Facts

System

Linux kernel

Corpus path

drivers/block/drbd/drbd_main.c

Extension

.c

Size

110402 bytes

Lines

3778

Domain

Driver Families

Bucket

drivers/block

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/module.h
• linux/jiffies.h
• linux/drbd.h
• linux/uaccess.h
• asm/types.h
• net/sock.h
• linux/ctype.h
• linux/mutex.h
• linux/fs.h
• linux/file.h
• linux/proc_fs.h
• linux/init.h
• linux/mm.h
• linux/memcontrol.h
• linux/mm_inline.h
• linux/slab.h
• linux/string.h
• linux/random.h
• linux/reboot.h
• linux/notifier.h
• linux/kthread.h
• linux/workqueue.h
• linux/unistd.h
• linux/vmalloc.h
• linux/sched/signal.h
• linux/drbd_limits.h
• drbd_int.h
• drbd_protocol.h
• drbd_req.h
• drbd_vli.h
• drbd_debugfs.h
• linux/moduleparam.h

Detected Declarations

• struct completion_work
• struct meta_data_on_disk
• struct fault_random_state
• function _get_ldev_if_state
• function tl_release
• function _tl_restart
• function list_for_each_entry_safe
• function tl_restart
• function tl_clear
• function tl_abort_disk_io
• function drbd_thread_setup
• function drbd_thread_init
• function drbd_thread_start
• function _drbd_thread_stop
• function drbd_calc_cpu_mask
• function for_each_resource_rcu
• function for_each_online_cpu
• function drbd_thread_current_set_cpu
• function drbd_header_size
• function prepare_header80
• function prepare_header95
• function prepare_header100
• function prepare_header
• function __send_command
• function __conn_send_command
• function conn_send_command
• function drbd_send_command
• function drbd_send_ping
• function drbd_send_ping_ack
• function drbd_send_sync_param
• function __drbd_send_protocol
• function drbd_send_protocol
• function _drbd_send_uuids
• function drbd_send_uuids
• function drbd_send_uuids_skip_initial_sync
• function drbd_print_uuids
• function drbd_gen_and_send_sync_uuid
• function drbd_send_sizes
• function drbd_send_current_state
• function drbd_send_state
• function drbd_send_state_req
• function conn_send_state_req
• function drbd_send_sr_reply
• function conn_send_sr_reply
• function dcbp_set_code
• function dcbp_set_start
• function dcbp_set_pad_bits
• function fill_bitmap_rle_bits

Annotated Snippet

module_init(drbd_init)
module_exit(drbd_cleanup)

EXPORT_SYMBOL(drbd_conn_str);
EXPORT_SYMBOL(drbd_role_str);
EXPORT_SYMBOL(drbd_disk_str);
EXPORT_SYMBOL(drbd_set_st_err_str);

Annotation

• Immediate include surface: `linux/module.h`, `linux/jiffies.h`, `linux/drbd.h`, `linux/uaccess.h`, `asm/types.h`, `net/sock.h`, `linux/ctype.h`, `linux/mutex.h`.
• Detected declarations: `struct completion_work`, `struct meta_data_on_disk`, `struct fault_random_state`, `function _get_ldev_if_state`, `function tl_release`, `function _tl_restart`, `function list_for_each_entry_safe`, `function tl_restart`, `function tl_clear`, `function tl_abort_disk_io`.
• Atlas domain: Driver Families / drivers/block.
• 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.