Messages in this thread | | | Date | Wed, 12 Jun 2019 05:07:49 +0300 | From | "Kirill A. Shutemov" <> | Subject | Re: [PATCH, RFC 2/2] Implement sharing/unsharing of PMDs for FS/DAX |
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On Fri, May 24, 2019 at 09:07:11AM -0700, Larry Bassel wrote: > Again, I don't think this can happen in DAX. The only sharing allowed > is for FS/DAX/2MiB pagesize.
Hm. I still don't follow. How do you guarantee that DAX actually allocated continues space for the file on backing storage and you can map it with PMD page? I believe you don't have such guarantee.
-- Kirill A. Shutemov
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