* Re: [PATCH v2 1/3] block: add QUEUE_FLAG_DAX for devices to advertise their DAX support
[not found] ` <1466702773.3504.363.camel@hpe.com>
@ 2016-06-23 21:11 ` Mike Snitzer
0 siblings, 0 replies; only message in thread
From: Mike Snitzer @ 2016-06-23 21:11 UTC (permalink / raw)
To: Kani, Toshimitsu
Cc: yigal, axboe, linux-s390, linux-nvdimm@lists.01.org,
heiko.carstens, linux-kernel, linux-raid, dm-devel, viro,
schwidefsky, dan.j.williams, agk
On Thu, Jun 23 2016 at 1:36pm -0400,
Kani, Toshimitsu <toshi.kani@hpe.com> wrote:
> On Thu, 2016-06-23 at 19:31 +0300, Yigal Korman wrote:
> > On Thu, Jun 23, 2016 at 2:54 AM, Toshi Kani <toshi.kani@hpe.com> wrote:
> > >
> > >
> > > Currently, presence of direct_access() in block_device_operations
> > > indicates support of DAX on its block device. Because
> > > block_device_operations is instantiated with 'const', this DAX
> > > capablity may not be enabled conditinally.
> > >
> > > In preparation for supporting DAX to device-mapper devices, add
> > > QUEUE_FLAG_DAX to request_queue flags to advertise their DAX
> > > support. This will allow to set the DAX capability based on how
> > > mapped device is composed.
> >
> > Hi Toshi,
> > This patch is very helpful!
> > I think QUEUE_FLAG_DAX can also help with identifying dax devices in
> > userspace.
> > Perhaps you'd be willing to squash the patch below with this one or
> > add it to your submission?
>
> Hi Yigal,
>
> Good idea. Mike can probably take it into his tree, but I will include it
> into the series if I needed to submit v3.
>
> Acked-by: Toshi Kani <toshi.kani@hpe.com>
As you can see I sent out v3 of this set. Jens will need to pick up the
"block:" patches but I'll pick up the DM patches once Jens does so.
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2016-06-23 21:11 ` [PATCH v2 1/3] block: add QUEUE_FLAG_DAX for devices to advertise their DAX support Mike Snitzer
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