diff options
| author |   Dan Williams <dan.j.williams@intel.com> | 2017-05-04 14:01:24 -0700 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2017-05-04 14:01:24 -0700 |
| commit | 8f078b38dd382710884ce7abd31a1935c440e6f8 (patch) | |
| tree | bec3467c1f513663801d7fb62a9c56bea2fe52b6 /include/linux/libnvdimm.h | |
| parent | device-dax: fix sysfs attribute deadlock (diff) | |
| download | wireguard-linux-8f078b38dd382710884ce7abd31a1935c440e6f8.tar.xz wireguard-linux-8f078b38dd382710884ce7abd31a1935c440e6f8.zip | |
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.h | 6 |
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, |