Re: [PATCH 06/10] xfs: allow setting errortags at mount time

["Darrick J. Wong" <djwong@kernel.org>]

On Wed, Jan 28, 2026 at 04:45:57AM +0100, Christoph Hellwig wrote:
> On Tue, Jan 27, 2026 at 05:37:30PM -0800, Darrick J. Wong wrote:
> > > +  errortag=tagname
> > > +	When specified, enables the error inject tag named "tagname" with the
> > > +	default frequency.  Can be specified multiple times to enable multiple
> > > +	errortags.  Specifying this option on remount will reset the error tag
> > > +	to the default value if it was set to any other value before.
> > 
> > Any interest in allowing people to specify the value too?  Seeing as we
> > allow that the sysfs version of the interface.
> 
> I don't need it for my uses yet, but it would be nice in general.
> The reason I didn't do it is because it adds complex non-standard
> parsing, and I'd have to find a way to separate the tag and the value
> that is not "=", which is already taken by the mount option parsing.

Huh.  I could've sworn there was a way to do suboption parsing with the
new mount api, but maybe I hallucinated that.

--D