NAME

       io_uring_prep_fadvise - prepare a fadvise request

SYNOPSIS

       #include <fcntl.h>
       #include <liburing.h>

       void io_uring_prep_fadvise(struct io_uring_sqe *sqe,
                                  int fd,
                                  __u64 offset,
                                  off_t len,
                                  int advice);

DESCRIPTION

       The  io_uring_prep_fadvise(3)  function  prepares an fadvise request. The submission queue
       entry sqe is setup to use the file descriptor  pointed  to  by  fd  to  start  an  fadvise
       operation at offset and of len length in bytes, giving it the advise located in advice.

       This function prepares an async posix_fadvise(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), posix_fadvise(2)