RegisteredFile

uring_file::uring

Struct RegisteredFile 

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pub struct RegisteredFile { /* private fields */ }
Expand description

A file registered with a specific Uring instance for optimized I/O.

Registered files avoid the overhead of fd lookup on each operation. Create one via Uring::register.

§Performance

Using registered files can significantly reduce per-operation overhead, especially for high-frequency I/O patterns. The kernel maintains a pre-validated reference to the file, avoiding repeated fd table lookups.

§Kernel Requirements

Requires Linux 5.12+ for sparse file registration.

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