sysfs-class-dax 889 B

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