We weren't passing back -errno for the system call failure.
This meant any error got turned into EPERM as far as the
caller was concerned.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This really wants to be a "will we over-fill the ring?" kind of
check, but the sqe_head/sqe_tail should not be that far apart. If they
are, that's a bug elsewhere. So just kill the check.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Applications should not need to care about this, we can pass it in
ourselves. Once the libc support is there, we won't expose this
parameter either.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Let's have the various helpers be in usefully named functions, no
need to bundle them all into the same one.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
