Re: [GIT PULL] bcachefs updates for 6.9

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On Wed, Mar 13, 2024 at 02:51:38PM -0700, Linus Torvalds wrote:
> On Wed, 13 Mar 2024 at 14:34, Kent Overstreet <kent.overstreet@xxxxxxxxx> wrote:
> >
> > I liked your MAD suggestion, but the catch was that we need an
> > exponentially weighted version,
> 
> The code for the weighted version literally doesn't change.

Well, no, and there's another problem I can't believe I missed until
now. MAD is defined as median of the absolute deviations, not mean, and
you can't compute a median incrementally.

So MAD doesn't work here at all.




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