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libnvdimm, dax: introduce device-dax infrastructure

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Device DAX is the device-centric analogue of Filesystem DAX
(CONFIG_FS_DAX).  It allows persistent memory ranges to be allocated and
mapped without need of an intervening file system.  This initial
infrastructure arranges for a libnvdimm pfn-device to be represented as
a different device-type so that it can be attached to a driver other
than the pmem driver.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dan Williams
2016-03-11 10:15:36 -08:00
parent 0bfb8dd3ed
commit cd03412a51
13 changed files with 264 additions and 34 deletions
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tools/testing/nvdimm/Kbuild
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@@ -50,6 +50,7 @@ libnvdimm-y += $(NVDIMM_SRC)/label.o
libnvdimm-$(CONFIG_ND_CLAIM) += $(NVDIMM_SRC)/claim.o
libnvdimm-$(CONFIG_BTT) += $(NVDIMM_SRC)/btt_devs.o
libnvdimm-$(CONFIG_NVDIMM_PFN) += $(NVDIMM_SRC)/pfn_devs.o
libnvdimm-$(CONFIG_NVDIMM_DAX) += $(NVDIMM_SRC)/dax_devs.o
libnvdimm-y += config_check.o
obj-m += test/