From mboxrd@z Thu Jan  1 00:00:00 1970
From: Christoph Hellwig <hch-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
Subject: Re: [PATCH v2 3/3] dev-dax: add fallocate support to clear poison
Date: Mon, 19 Dec 2016 22:04:29 -0800
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On Mon, Dec 19, 2016 at 04:30:47PM -0700, Dave Jiang wrote:
> Adding fallocate support to device-dax. This implements FALLOC_FL_PUNCH_HOLE
> in order to allow clearing of badblocks/poison list.

How exactly does that map to hole punch semantics?