Module ring 

Ring buffer for async I/O submission and completion.

Each ring consists of two pages mapped into the owning process’s address space: a Submission Queue (SQ) page and a Completion Queue (CQ) page. The kernel tracks metadata (head/tail pointers, ownership) internally; only the raw SQE/CQE arrays are visible to userspace.

Structs

Ring

A shared submission/completion ring for a single process.

RingMeta 🔒

Metadata header embedded at offset 0 of each ring page. The SQE/CQE array starts at RING_META_SIZE bytes from the page base.

Enums

RingError

Constants

MAX_RINGS 🔒

RING_META_SIZE 🔒

Statics

NEXT_RING_ID 🔒

RING_REGISTRY 🔒

Functions

destroy_ring

Remove a ring from the registry and free its pages.

find_ring

Find a ring by its opaque id.

next_ring_id 🔒