Re: [PATCH v2 2/9] ext2: tell DAX the size of allocation holes

From: Ross Zwisler
Date: Thu Aug 25 2016 - 15:25:40 EST

On Thu, Aug 25, 2016 at 12:57:28AM -0700, Christoph Hellwig wrote:
> Hi Ross,
> can you take at my (fully working, but not fully cleaned up) version
> of the iomap based DAX code here:
> By using iomap we don't even have the size hole problem and totally
> get out of the reverse-engineer what buffer_heads are trying to tell
> us business. It also gets rid of the other warts of the DAX path
> due to pretending to be like direct I/O, so this might be a better
> way forward also for ext2/4.

Sure, I'll take a look.