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| author |   Dan Williams <dan.j.williams@intel.com> | 2018-03-29 17:20:39 -0700 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2018-04-03 05:41:19 -0700 |
| commit | 2080e88aecd78773eacbe7d6b9d59968000ba55a (patch) | |
| tree | 884af4d8fa7c875451df94cd82c917338992386e /drivers/dax | |
| parent | fs, dax: use page->mapping to warn if truncate collides with a busy page (diff) | |
| download | linux-dev-2080e88aecd78773eacbe7d6b9d59968000ba55a.tar.xz linux-dev-2080e88aecd78773eacbe7d6b9d59968000ba55a.zip | |
dax: introduce CONFIG_DAX_DRIVER
In support of allowing device-mapper to compile out idle/dead code when
there are no dax providers in the system, introduce the DAX_DRIVER
symbol. This is selected by all leaf drivers that device-mapper might be
layered on top. This allows device-mapper to conditionally 'select DAX'
only when a provider is present.
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Reported-by: Bart Van Assche <Bart.VanAssche@wdc.com>
Reviewed-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/dax')
| -rw-r--r-- | drivers/dax/Kconfig | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/dax/Kconfig b/drivers/dax/Kconfig index b79aa8f7a497..e0700bf4893a 100644 --- a/drivers/dax/Kconfig +++ b/drivers/dax/Kconfig @@ -1,3 +1,7 @@ +config DAX_DRIVER + select DAX + bool + menuconfig DAX tristate "DAX: direct access to differentiated memory" select SRCU @@ -16,7 +20,6 @@ config DEV_DAX baseline memory pool. Mappings of a /dev/daxX.Y device impose restrictions that make the mapping behavior deterministic. - config DEV_DAX_PMEM tristate "PMEM DAX: direct access to persistent memory" depends on LIBNVDIMM && NVDIMM_DAX && DEV_DAX |