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authorDan Williams <dan.j.williams@intel.com>2017-05-05 00:01:24 +0300
committerDan Williams <dan.j.williams@intel.com>2017-05-05 00:01:24 +0300
commit8f078b38dd382710884ce7abd31a1935c440e6f8 (patch)
treebec3467c1f513663801d7fb62a9c56bea2fe52b6 /include/linux/libnvdimm.h
parent565851c972b50612f3a4542e26879ffb3e906fc2 (diff)
downloadlinux-8f078b38dd382710884ce7abd31a1935c440e6f8.tar.xz
libnvdimm: convert NDD_ flags to use bitops, introduce NDD_LOCKED
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>
Diffstat (limited to 'include/linux/libnvdimm.h')
-rw-r--r--include/linux/libnvdimm.h6
1 files changed, 4 insertions, 2 deletions
diff --git a/include/linux/libnvdimm.h b/include/linux/libnvdimm.h
index f07b1b14159a..6c807017128d 100644
--- a/include/linux/libnvdimm.h
+++ b/include/linux/libnvdimm.h
@@ -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,