Re: [PATCH RESEND v6 1/9] pagemap: Introduce ->memory_failure()

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On Wed, Aug 18, 2021 at 10:10:51AM -0700, Dan Williams wrote:
> > Sounds like a nice solution.  I think I can add an is_notify_supported() interface in dax_holder_ops and check it when register dax_holder.
> 
> Shouldn't the fs avoid registering a memory failure handler if it is
> not prepared to take over? For example, shouldn't this case behave
> identically to ext4 that will not even register a callback?

Yes.



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