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From: David Howells <dhowells@redhat.com>
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To: Miklos Szeredi <miklos@szeredi.hu>
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Date: Mon, 24 Jul 2017 09:25:17 +0100
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Subject: Re: [Ksummit-discuss] [TECH TOPIC] Getting better/supplementary
	error info back to userspace
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Miklos Szeredi <miklos@szeredi.hu> wrote:

> My suggestion was to keep the kernel interface really simple, e.g.:
> 
>    return detailed_error(-EINVAL, "failure to do foo because of bar");

That's what I was thinking of, though I'd prefix the string with a source tag,
such as "nfs", "vfs" or "dvb-core".

David