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Date:   Mon, 1 Nov 2021 12:12:53 -0400
From:   Mike Snitzer <>
To:     Dan Williams <>
Cc:     Christoph Hellwig <>, Ira Weiny <>,
        device-mapper development <>,
        linux-xfs <>,
        Linux NVDIMM <>,
        linux-s390 <>,
        linux-fsdevel <>,,
        linux-ext4 <>,
Subject: Re: [PATCH 01/11] dm: make the DAX support dependend on CONFIG_FS_DAX

On Wed, Oct 27 2021 at  4:53P -0400,
Dan Williams <> wrote:

> On Sun, Oct 17, 2021 at 9:41 PM Christoph Hellwig <> wrote:
> >
> > The device mapper DAX support is all hanging off a block device and thus
> > can't be used with device dax.  Make it depend on CONFIG_FS_DAX instead
> > of CONFIG_DAX_DRIVER.  This also means that bdev_dax_pgoff only needs to
> > be built under CONFIG_FS_DAX now.
> Looks good.
> Mike, can I get an ack to take this through nvdimm.git? (you'll likely
> see me repeat this question on subsequent patches in this series).

Sorry for late reply, but I see you punted on pushing for 5.16 merge
anyway (I'm sure my lack of response didn't help, sorry about that).

Acked-by: Mike Snitzer <>


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