Re: [PATCH 09/15] vfs: pass operation flags to {clone, dedupe}_file_range implementations

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On Fri, Oct 05, 2018 at 10:50:08AM -0700, Darrick J. Wong wrote:
> > That's cool. But you know what's going to be the next step, right?
> > Merging the 3 file operation interfaces into a single one.
> > copy_file_range() already has the flags arg for future extensions
> > and as you wrote somewhere, clone is really an optimized copy.
> > ovl_copyfile() already does that internally.
> > 
> > So the only take away for this patch series, please use constant
> > names COPYRANGE_* and also explicitly define:
> > 
> > /* Operation is actually clone, not copy. */
> > #define COPYRANGE_CLONE      (1 << 2)
> > /* Operation is actually dedupe, not copy. */
> > #define COPYRANGE_DEDUPE      (1 << 3)
> 
> Yeah, I was too tired to try to throw that one on top of the flaming
> garbage pile.  But I guess since I have a bunch more work to do to the
> previous patch I might as well do that...

I'm not totally sold on just merging everything, but I very much despise
what is done in this patch, as it creates a completely confusing
interface.



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