Re: [PATCH v5 0/3] Fix DM DAX handling

[Dan Williams]

On Tue, Jun 26, 2018 at 3:30 PM, Ross Zwisler
<ross.zwisler@xxxxxxxxxxxxxxx> wrote:
> This series fixes a few issues that I found with DM's handling of DAX
> devices.  Here are some of the issues I found:
>
>  * We can create a dm-stripe or dm-linear device which is made up of an
>    fsdax PMEM namespace and a raw PMEM namespace but which can hold a
>    filesystem mounted with the -o dax mount option.  DAX operations to
>    the raw PMEM namespace part lack struct page and can fail in
>    interesting/unexpected ways when doing things like fork(), examining
>    memory with gdb, etc.
>
>  * We can create a dm-stripe or dm-linear device which is made up of an
>    fsdax PMEM namespace and a BRD ramdisk which can hold a filesystem
>    mounted with the -o dax mount option.  All I/O to this filesystem
>    will fail.
>

For the series:

Acked-by: Dan Williams <dan.j.williams@xxxxxxxxx>