Re: [PATCH v15 16/17] iomap: Convert iomap_add_to_ioend to take a folio

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On Wed, Jul 21, 2021 at 05:31:16AM +0100, Matthew Wilcox wrote:
> On Wed, Jul 21, 2021 at 05:27:49AM +0100, Christoph Hellwig wrote:
> > On Tue, Jul 20, 2021 at 05:12:19PM -0700, Darrick J. Wong wrote:
> > > I /am/ beginning to wonder, though -- seeing as Christoph and Matthew
> > > both have very large patchsets changing things in fs/iomap/, how would
> > > you like those landed?  Christoph's iterator refactoring looks like it
> > > could be ready to go for 5.15.  Matthew's folio series looks like a
> > > mostly straightforward conversion for iomap, except that it has 91
> > > patches as a hard dependency.
> > > 
> > > Since most of the iomap changes for 5.15 aren't directly related to
> > > folios, I think I prefer iomap-for-next to be based directly off -rcX
> > > like usual, though I don't know where that leaves the iomap folio
> > > conversion.  I suppose one could add them to a branch that itself is a
> > > result of the folio and iomap branches, or leave them off for 5.16?
> > 
> > Maybe willy has a different opinion, but I thought the plan was to have
> > the based folio enablement in 5.15, and then do things like the iomap
> > conversion in the the next merge window.  If we have everything ready
> > this window we could still add a branch that builds on top of both
> > the iomap and folio trees, though.
> 
> Yes, my plan was to have the iomap conversion and the second half of the
> page cache work hit 5.16.  If we're ready earlier, that's great!  Both
> you and I want to see both the folio work and the iomap_iter work
> get merged, so I don't anticipate any lack of will to get the work done.

Ok, good.  I'll await a non-RFC version of the iterator rework for 5.15,
and folio conversions for 5.16.

--D



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