io_uring_prep_madvise - prepare a madvise request

       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.

       The io_uring_prep_madvise64(3) function works like io_uring_prep_madvise(3) except that it takes a 64-bit
       length  rather  than  just a 32-bit one. Older kernels may not support the 64-bit length variant. If this
       variant is attempted used on a kernel that doesn't support 64-bit lengths,  then  the  request  will  get
       errored with -EINVAL in the results field of the CQE.

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

       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.

       io_uring_prep_madvise - prepare a madvise request

       None

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

liburing-2.2                                     March 13, 2022                         io_uring_prep_madvise(3)

#include<sys/mman.h>#include<liburing.h>voidio_uring_prep_madvise(structio_uring_sqe*sqe,void*addr,__u32len,intadvice);voidio_uring_prep_madvise64(structio_uring_sqe*sqe,void*addr,off_tlen,intadvice);