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authorDan Williams <dan.j.williams@intel.com>2018-03-30 03:20:39 +0300
committerDan Williams <dan.j.williams@intel.com>2018-04-03 15:41:19 +0300
commit2080e88aecd78773eacbe7d6b9d59968000ba55a (patch)
tree884af4d8fa7c875451df94cd82c917338992386e /drivers/nvdimm
parentd2c997c0f14535eff68d8ed9c2f1c5e100625751 (diff)
downloadlinux-2080e88aecd78773eacbe7d6b9d59968000ba55a.tar.xz
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/nvdimm')
-rw-r--r--drivers/nvdimm/Kconfig2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/nvdimm/Kconfig b/drivers/nvdimm/Kconfig
index a65f2e1d9f53..40cbdb16e23e 100644
--- a/drivers/nvdimm/Kconfig
+++ b/drivers/nvdimm/Kconfig
@@ -20,7 +20,7 @@ if LIBNVDIMM
config BLK_DEV_PMEM
tristate "PMEM: Persistent memory block device support"
default LIBNVDIMM
- select DAX
+ select DAX_DRIVER
select ND_BTT if BTT
select ND_PFN if NVDIMM_PFN
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