On Tue, Feb 09, 2021 at 01:11:03PM -0800, Andrew Morton wrote:
> > > 
> > > It would be best to merge [1/4] via the btrfs tree.  Please add my
> > > 
> > > Acked-by: Andrew Morton <[email protected]>
> > > 
> > > 
> > > Although I think it would be better if [1/4] merely did the code
> > > movement.  Adding those BUG_ON()s is a semantic/functional change and
> > > really shouldn't be bound up with the other things this patch series
> > > does.
> > 
> > I proposed this too and was told 'no'...
> > 
> > <quote>
> > If we put in into a separate patch, someone will suggest backing out the
> > patch which tells us that there's a problem.
> > </quote>
> >     -- 
> > https://lore.kernel.org/lkml/[email protected]/
> 
> Yeah, no, please let's not do this.  Bundling an offtopic change into
> [1/4] then making three more patches dependent on the ontopic parts of
> [1/4] is just rude.
> 
> I think the case for adding the BUG_ONs can be clearly made.  And that
> case should at least have been clearly made in the [1/4] changelog!
> 
> (Although I expect VM_BUG_ON() would be better - will give us sufficient
> coverage without the overall impact.)

I'm ok with VM_BUG_ON()

> 
> Let's please queue this up separately.

Ok can I retain your Ack on the move part of the patch?  Note that it does
change kmap_atomic() to kmap_local_page() currently.

Would you prefer a separate change for that as well?

Ira

PS really CC'ing Matthew now...

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