NAME

       io_uring_prep_madvise - prepare a madvise request

SYNOPSIS

       #include <sys/mman.h>
       #include <liburing.h>

       void io_uring_prep_madvise(struct io_uring_sqe *sqe,
                                  void *addr,
                                  off_t len,
                                  int advice);

DESCRIPTION

       The  io_uring_prep_madvise(3)  function  prepares an madvise request. The submission queue
       entry sqe is setup to start an madvise operation at the virtual address of addr and of len
       length in bytes, giving it the advise located in advice.

       This function prepares an async madvise(2) request. See that man page for details.

RETURN VALUE

       None

ERRORS

       The  CQE  res field will contain the result of the operation. See the related man page for
       details on possible values. Note that where synchronous system calls  will  return  -1  on
       failure  and  set  errno to the actual error value, io_uring never uses errno.  Instead it
       returns the negated errno directly in the CQE res field.

SEE ALSO

       io_uring_get_sqe(3), io_uring_submit(3), io_uring_register(2), madvise(2)