Re: [PATCH 1/2] filemap: Convert generic_perform_write() to support large folios

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On Tue, May 28, 2024 at 03:23:39PM +0000, Daniel Gomez wrote:
> I have the same patch for shmem and large folios tree. That was the last piece
> needed for getting better performance results. However, it is also needed to
> support folios in the write_begin() and write_end() callbacks.

I don't think it's *needed*.  It's nice!  But clearly not necessary
since Christoph made nfs work without doing that.

> In order to avoid
> making them local to shmem, how should we do the transition to folios in these
> 2 callbacks? I was looking into aops->read_folio approach but what do you think?

See the v2 of buffer_write_operations that I just posted.  I was waiting
for feedback from Christoph on the revised method for passing fsdata
around, but I may as well just post a v2 and see what happens.




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