Re: [PATCH] aoe: end barrier bios with EOPNOTSUPP

Alan Cox
2009-09-09T17:06:59Z

> The bio in question is a barrier. Jens Axboe suggested that such bios
> need to be recognized and ended with -EOPNOTSUPP by any driver that
> provides its own ->make_request_fn handler and does not handle
> barriers.
>
> In testing the changes below eliminate the BUG.

Presumably AoE should actually issue an ATA cache flush for this case ?