io_uring_prep_fadvise(3)        liburing Manual       io_uring_prep_fadvise(3)

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)

liburing-2.2                    March 13, 2022        io_uring_prep_fadvise(3)