fn cancel(self: *IO_Uring, user_data: u64, cancel_user_data: u64, flags: u32) !*linux.io_uring_sqe

Queues (but does not submit) an SQE to remove an existing operation. Returns a pointer to the SQE.

The operation is identified by its user_data.

The completion event result will be 0 if the operation was found and cancelled successfully, -EALREADY if the operation was found but was already in progress, or -ENOENT if the operation was not found.

Parameters

self: *IO_Uring,
user_data: u64,
cancel_user_data: u64,
flags: u32,