fs/ocfs2/cluster/nodemanager.c

File Facts

System

Linux kernel

Corpus path

fs/ocfs2/cluster/nodemanager.c

Extension

.c

Size

21059 bytes

Lines

869

Domain

Core OS

Bucket

VFS And Filesystem Core

Inferred role

Core OS: exported/initcall integration point

Status

integration implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

• Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.
• 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/string.h
• linux/kernel.h
• linux/module.h
• linux/configfs.h
• tcp.h
• nodemanager.h
• heartbeat.h
• masklog.h
• sys.h

Detected Declarations

• struct o2nm_node_group
• struct o2nm_cluster_group
• function o2nm_configured_node_map
• function o2nm_node_put
• function o2nm_node_get
• function o2nm_this_node
• function o2nm_node_release
• function o2nm_node_num_show
• function o2nm_node_num_store
• function o2nm_node_ipv4_port_show
• function o2nm_node_ipv4_port_store
• function o2nm_node_ipv4_address_show
• function o2nm_node_ipv4_address_store
• function o2nm_node_local_show
• function o2nm_node_local_store
• function o2nm_cluster_attr_write
• function o2nm_cluster_idle_timeout_ms_show
• function o2nm_cluster_idle_timeout_ms_store
• function o2nm_cluster_keepalive_delay_ms_show
• function o2nm_cluster_keepalive_delay_ms_store
• function o2nm_cluster_reconnect_delay_ms_show
• function o2nm_cluster_reconnect_delay_ms_store
• function o2nm_cluster_fence_method_show
• function o2nm_cluster_fence_method_store
• function o2nm_node_group_drop_item
• function o2nm_cluster_release
• function o2nm_cluster_group_drop_item
• function o2nm_lock_subsystem
• function o2nm_unlock_subsystem
• function o2nm_depend_item
• function o2nm_undepend_item
• function o2nm_depend_this_node
• function o2nm_undepend_this_node
• function exit_o2nm
• function init_o2nm
• module init init_o2nm
• export o2nm_get_node_by_num
• export o2nm_configured_node_map
• export o2nm_get_node_by_ip
• export o2nm_node_put
• export o2nm_node_get
• export o2nm_this_node

Annotated Snippet

module_init(init_o2nm)
module_exit(exit_o2nm)

Annotation

• Immediate include surface: `linux/slab.h`, `linux/string.h`, `linux/kernel.h`, `linux/module.h`, `linux/configfs.h`, `tcp.h`, `nodemanager.h`, `heartbeat.h`.
• Detected declarations: `struct o2nm_node_group`, `struct o2nm_cluster_group`, `function o2nm_configured_node_map`, `function o2nm_node_put`, `function o2nm_node_get`, `function o2nm_this_node`, `function o2nm_node_release`, `function o2nm_node_num_show`, `function o2nm_node_num_store`, `function o2nm_node_ipv4_port_show`.
• Atlas domain: Core OS / VFS And Filesystem Core.
• 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.