22 lines
883 B
Text
Executable file
22 lines
883 B
Text
Executable file
What: /sys/class/dax/
|
|
Date: May, 2016
|
|
KernelVersion: v4.7
|
|
Contact: linux-nvdimm@lists.01.org
|
|
Description: Device DAX is the device-centric analogue of Filesystem
|
|
DAX (CONFIG_FS_DAX). It allows memory ranges to be
|
|
allocated and mapped without need of an intervening file
|
|
system. Device DAX is strict, precise and predictable.
|
|
Specifically this interface:
|
|
|
|
1/ Guarantees fault granularity with respect to a given
|
|
page size (pte, pmd, or pud) set at configuration time.
|
|
|
|
2/ Enforces deterministic behavior by being strict about
|
|
what fault scenarios are supported.
|
|
|
|
The /sys/class/dax/ interface enumerates all the
|
|
device-dax instances in the system. The ABI is
|
|
deprecated and will be removed after 2020. It is
|
|
replaced with the DAX bus interface /sys/bus/dax/ where
|
|
device-dax instances can be found under
|
|
/sys/bus/dax/devices/
|