Re: [PATCH v2 2/3] xfs: transaction subsystem quiesce mechanism

[Christoph Hellwig <hch@infradead.org>]

On Wed, Apr 07, 2021 at 07:36:37AM -0400, Brian Foster wrote:
> Personally, I'd probably have to think about it some more, but initially
> I don't have any strong objection to removing quotaoff support. More
> practically, I suspect we'd have to deprecate it for some period of time
> given that it's a generic interface, has userspace tools, regression
> tests, etc., and may or may not have real users who might want the
> opportunity to object (or adjust).
> 
> Though perhaps potentially avoiding that mess is what you mean by "...
> disables accounting vs.  enforcement." I.e., retain the interface and
> general ability to turn off enforcement, but require a mount cycle in
> the future to disable accounting..? Hmm... that seems like a potentially
> nicer/easier path forward and a less disruptive change. I wonder even if
> we could just (eventually) ignore the accounting disablement flags from
> userspace and if any users would have reason to care about that change
> in behavior.

I'm currently testing a series that just ignores disabling of accounting
and logs a message and that seems to do ok so far.  I'll check if
clearing the on-disk flags as well could work out even better.