Re: [PATCH v2 1/3] xfs: add bmapi nodiscard flag

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On Wed, May 09, 2018 at 08:47:56AM -0400, Brian Foster wrote:
> > 
> > I've read the thread on the original patch now.  While not my preference
> > I'm fine with doing an xfs_itruncate_extents_flags with a single
> > xfs_itruncate_extents wrapper and the same for bmapi, as long as we pass
> > flags instead of the bool, and don't add pointless wrappers for the
> > nodiscard case - those are just trickle down flags in general, so we
> > should keep things as simple as possible.
> 
> Ok, do you mean to include xfs_free_extent() in that as well? E.g.,
> xfs_free_extent_flags(..., XFS_EXTENT_BUSY_SKIP_DISCARD) vs. a single
> wrapper without _flags()? Note that that flag is still sourced from a
> boolean unless we also change the xfs_extent_free_item field, which I'm
> not sure makes sense. Alternatively, I could just kill the
> xfs_free_extent_nodiscard() wrapper and call the internal variant from
> the one place that wants to toggle discard behavior.

I'd store flags in xfs_extent_free_item.  But most importantly
I think the _nodiscard wrappers need to go away.
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