Re: [PATCH 4/9] shmem: remove shmem_get_partial_folio

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On Wed, Jan 18, 2023 at 05:43:58PM +0100, Christoph Hellwig wrote:
> On Wed, Jan 18, 2023 at 08:57:05AM -0500, Brian Foster wrote:
> > This all seems reasonable to me at a glance, FWIW, but I am a little
> > curious why this wouldn't split up into two changes. I.e., switch this
> > over to filemap_get_entry() to minimally remove the FGP_ENTRY dependency
> > without a behavior change, then (perhaps after the next patch) introduce
> > SGP_FIND in a separate patch. That makes it easier to review and
> > potentially undo if it happens to pose a problem in the future. Hm?
> 
> The minimal change to filemap_get_entry would require to add the
> lock, check mapping and retry loop and thus add a fair amount of
> code.  So I looked for ways to avoid that and came up with this
> version.  But if there is a strong preference to first open code
> the logic and then later consolidate it I could do that.
> 

Ok. Not a strong preference from me. I don't think it's worth
complicating that much just to split up.

Brian





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