linux-kernel - [PATCH v4 0/2] dax, dm: stop requiring dax for device-mapper

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Date:   Thu, 21 Sep 2017 21:26:47 -0700
From:   Dan Williams <dan.j.williams@...el.com>
To:     snitzer@...hat.com
Cc:     linux-nvdimm@...ts.01.org, Michael Ellerman <mpe@...erman.id.au>,
        Heiko Carstens <heiko.carstens@...ibm.com>,
        linux-kernel@...r.kernel.org,
        Martin Schwidefsky <schwidefsky@...ibm.com>,
        dm-devel@...hat.com, Paul Mackerras <paulus@...ba.org>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Bart Van Assche <Bart.VanAssche@....com>,
        Gerald Schaefer <gerald.schaefer@...ibm.com>
Subject: [PATCH v4 0/2] dax, dm: stop requiring dax for device-mapper

Changes since v3 [1]:
* rebase on 4.14-rc1
* rewrite the changelog of patch2 to drop broken references to the
  "built-in portion of device-mapper" (Mike)

[1]: https://lists.01.org/pipermail/linux-nvdimm/2017-August/011545.html

---

Bart points out that the DAX core is unconditionally enabled if
device-mapper is enabled. Add some config machinery and stub routines to
allow device-mapper to build and run with CONFIG_DAX=n.

---

Dan Williams (2):
      dax: introduce CONFIG_DAX_DRIVER
      dm: allow device-mapper to operate without dax support


 arch/powerpc/platforms/Kconfig |    1 +
 drivers/block/Kconfig          |    1 +
 drivers/dax/Kconfig            |    4 +++-
 drivers/md/Kconfig             |    2 +-
 drivers/md/dm-linear.c         |    6 ++++++
 drivers/md/dm-stripe.c         |    6 ++++++
 drivers/md/dm.c                |   10 ++++++----
 drivers/nvdimm/Kconfig         |    1 +
 drivers/s390/block/Kconfig     |    1 +
 include/linux/dax.h            |   30 ++++++++++++++++++++++++------
 10 files changed, 50 insertions(+), 12 deletions(-)