#include <liburing.h> void io_uring_prep_remove_buffers(struct io_uring_sqe *sqe, int nr, int bgid);
The io_uring_prep_remove_buffers(3) function prepares a request for removing previously supplied buffers. The submission queue entry sqe is setup to remove nr number of buffers from the buffer group ID indicated by bgid.
These are the errors that are reported in the CQE res field. On success, res will contain the number of successfully removed buffers. On error, the following errors can occur.
The kernel was unable to allocate memory for the request.
One of the fields set in the SQE was invalid.
No buffers exist at the specified bgid buffer group ID.
io_uring_get_sqe(3), io_uring_submit(3), io_uring_register(2), io_uring_prep_provide_buffers(3)