xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

nvdimm, btt: add a size attribute for BTTs

Browse Source 
To be consistent with other namespaces, expose a 'size' attribute for
BTT devices also.

Cc: Dan Williams <dan.j.williams@intel.com>
Reported-by: Linda Knippers <linda.knippers@hpe.com>
Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Vishal Verma
2016-07-27 16:38:59 -06:00
committed by Dan Williams
parent 68202c9f0a
commit abe8b4e3ce
3 changed files with 22 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
drivers/nvdimm/btt_devs.c
View File

@@ -140,10 +140,30 @@ static ssize_t namespace_store(struct device *dev,
}
static DEVICE_ATTR_RW(namespace);
static ssize_t size_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct nd_btt *nd_btt = to_nd_btt(dev);
ssize_t rc;
device_lock(dev);
if (dev->driver)
rc = sprintf(buf, "%llu\n", nd_btt->size);
else {
/* no size to convey if the btt instance is disabled */
rc = -ENXIO;
}
device_unlock(dev);
return rc;
}
static DEVICE_ATTR_RO(size);
static struct attribute *nd_btt_attributes[] = {
&dev_attr_sector_size.attr,
&dev_attr_namespace.attr,
&dev_attr_uuid.attr,
&dev_attr_size.attr,
NULL,
};