GitHub-Mirror/linux-bl808
2
0
Fork 0
mirror of https://github.com/Fishwaldo/linux-bl808.git synced 2025-06-17 20:25:19 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

libnvdimm: convert NDD_ flags to use bitops, introduce NDD_LOCKED

Browse source 
This is a preparation patch for handling locked nvdimm label regions, a
new concept as introduced by the latest DSM document on pmem.io [1]. A
future patch will leverage nvdimm_set_locked() at DIMM probe time to
flag regions that can not be enabled. There should be no functional
difference resulting from this change.

[1]: http://pmem.io/documents/NVDIMM_DSM_Interface_Example-V1.3.pdf

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dan Williams 2017-05-04 14:01:24 -07:00
parent 565851c972
commit 8f078b38dd
6 changed files with 19 additions and 9 deletions
Download patch file Download diff file Expand all files Collapse all files

6
include/linux/libnvdimm.h
View file

@ -20,9 +20,11 @@
enum {
/* when a dimm supports both PMEM and BLK access a label is required */
NDD_ALIASING = 1 << 0,
NDD_ALIASING = 0,
/* unarmed memory devices may not persist writes */
NDD_UNARMED = 1 << 1,
NDD_UNARMED = 1,
/* locked memory devices should not be accessed */
NDD_LOCKED = 2,
/* need to set a limit somewhere, but yes, this is likely overkill */
ND_IOCTL_MAX_BUFLEN = SZ_4M,