Re: [PATCH v4 2/4] generic: test mmap io fom DAX to non-DAX

Ross Zwisler
2017-04-18T16:33:05Z

On Mon, Apr 17, 2017 at 03:14:13PM +0800, Xiong Zhou wrote:
> Mount TEST_DEV as non-DAX, SCRATCH_DEV as DAX, then
> do mmap DIO from DAX to non-DAX.
>
> This test is split from generic/413. Since DIO from DAX
> to non-DAX is only supported/doable when device underneath
> has memory(struct page) backend.
>
> By ndctl looking at SCRATCH_DEV, skip this test if it is
> not in "memory mode".
>
> Adding helper to check pmem device status, which requires new
> PROGs ndctl to tweaking pmem devices and jq to parse ndctl's
> JSON format outputs.
>
> Signed-off-by: Xiong Zhou <xzhou@redhat.com>
> ---
> common/rc | 45 ++++++++++++++++++++
> tests/generic/423 | 113 ++++++++++++++++++++++++++++++++++++++++++++++++++

generic/423 looks good to me, just need to change the memory mode detection.