Re: [PATCH] xfs: Remove i_rwsem lock in buffered read

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On Wed, Jan 15, 2025 at 08:36:48PM -0800, Christoph Hellwig wrote:
> On Thu, Jan 16, 2025 at 08:41:21AM +1100, Dave Chinner wrote:
> > > I don't really have time to turn this hand waving into, but maybe we 
> > > should think if it's worthwhile or if I'm missing something important.
> > 
> > If people are OK with XFS moving to exclusive buffered or DIO
> > submission model, then I can find some time to work on the
> > converting the IO path locking to use a two-state shared lock in
> > preparation for the batched folio stuff that will allow concurrent
> > buffered writes...
> 
> This does sound fine to me, but it's hard to judge without seeing
> a prototype and results based on it.

OK, the consensus seems to be to run with this for the moment and
see how clean it ends up being. I'll look into it over the next
couple of weeks then.

-Dave.
-- 
Dave Chinner
david@xxxxxxxxxxxxx




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