Re: [RFC] iomap: use huge zero folio in iomap_dio_zero

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On Thu, May 09, 2024 at 05:58:23AM -0700, Christoph Hellwig wrote:
> On Thu, May 09, 2024 at 12:55:14PM +0000, Pankaj Raghav (Samsung) wrote:
> > We might still fail here during mount. My question is: do we also fail
> > the mount if folio_alloc fails?
> 
> Yes.  Like any other allocation that fails at mount time.

How hard is it to fallback to regular zero-page if you can't allocate
the zero-hugepage?  I think most sysadmins would rather mount with
reduced zeroing performance than get an ENOMEM.

--D




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