Re: [PATCH v4 00/16] Overhaul multi-page lookups for THP

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On Wed, 25 Nov 2020, Matthew Wilcox wrote:
> On Tue, Nov 17, 2020 at 11:43:02PM +0000, Matthew Wilcox wrote:
> > On Tue, Nov 17, 2020 at 07:15:13PM +0000, Matthew Wilcox wrote:
> > > I find both of these functions exceptionally confusing.  Does this
> > > make it easier to understand?
> > 
> > Never mind, this is buggy.  I'll send something better tomorrow.
> 
> That took a week, not a day.  *sigh*.  At least this is shorter.

Thanks, I'll give it a try (along with the other 4, on top of the 12:
maybe on -rc5, maybe on today's mmotm, I'll decide that later).

Shorter you say, that's good: I was disheartened by the way it got
more complicated, after your initial truncate_inode_partial_page()
neatness.  Any hints on what was wrong with my simple fixup to that?
(But I didn't spend any more time trying to prove or disprove it.)

Hugh



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