> -Original Message-
> From: Darrick J. Wong
> Sent: Friday, April 9, 2021 5:53 AM
> Subject: Re: [PATCH v4 1/7] fsdax: Introduce dax_iomap_cow_copy()
>
> On Thu, Apr 08, 2021 at 08:04:26PM +0800, Shiyang Ruan wrote:
> > In the case where the iomap is a write op
On Thu, Apr 08, 2021 at 08:04:26PM +0800, Shiyang Ruan wrote:
> In the case where the iomap is a write operation and iomap is not equal
> to srcmap after iomap_begin, we consider it is a CoW operation.
>
> The destance extent which iomap indicated is new allocated extent.
> So, it is needed to cop
