Re: dm stripe: add DAX support

From: Jens Axboe
Date: Wed Jul 20 2016 - 23:04:11 EST

On 07/20/2016 06:01 PM, Mike Snitzer wrote:
On Wed, Jul 13 2016 at 11:03am -0400,
Kani, Toshimitsu <toshi.kani@xxxxxxx> wrote:

On Tue, 2016-07-12 at 22:01 -0400, Mike Snitzer wrote:
On Tue, Jul 12 2016 at 6:22pm -0400,
Kani, Toshimitsu <toshi.kani@xxxxxxx> wrote:
On Fri, 2016-06-24 at 14:29 -0400, Mike Snitzer wrote:

Thanks for putting this summary together. Unfortunately none of the DM
changes can be queued for 4.8 until Jens takes the 2 block core patches:

Not sure what the hold up and/or issue is with them. But I've asked
twice (and implicilty a 3rd time here). Hopefully they land in time for

Hi Jens,

Can you take the two patches above? These patches add QUEUE_FLAG_DAX and its
sysfs show func. They allow device-mapper to set dax-capability based on its
configuration, and also allow user applications to check dax-capability via

Hi Jens,

As I shared with you before, here are the 2 patches I staged in
linux-next via linux-dm.git's 'for-next' (same as in the patchwork
references above) -- these were staged just so we had linux-next
coverage until you picked them up.

Please pick these up for 4.8 -- the changes are straightforward, are
required for DM's DAX support, and Dan Williams has also acked them:

Feel free to pick them up from patchwork or cherry-pick from

Added for 4.8, thanks!

Jens Axboe