Re: [PATCH] nvmet: disable direct I/O when unavailable

[Christoph Hellwig]

On Mon, Feb 25, 2019 at 01:18:10PM -0800, Sagi Grimberg wrote:
>
>> Frankly, we have a ton of testing related special cases in the kernel.
>>
>> This one is a) simple and small, only 10 LoC, b) far away from the fast
>> path or any other place where it could have any impact on legitimate
>> users and c) it prints an informal message showing you what happened.
>>
>> Sorry but this is a https://xkcd.com/386/ moment.
>
> How about we just fail it with a proper error message and let the
> user set buffered_io instead of trying to get smart here...

Yes, would be my preference.