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>

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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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include/uapi/linux/ndctl.h

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