diff options
Diffstat (limited to 'drivers/block')
| -rw-r--r-- | drivers/block/rbd.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c index c95104a80065..36ebec19dc20 100644 --- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -4669,6 +4669,14 @@ static ssize_t rbd_snap_show(struct device *dev, return sprintf(buf, "%s\n", rbd_dev->spec->snap_name); } +static ssize_t rbd_snap_id_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct rbd_device *rbd_dev = dev_to_rbd_dev(dev); + + return sprintf(buf, "%llu\n", rbd_dev->spec->snap_id); +} + /* * For a v2 image, shows the chain of parent images, separated by empty * lines. For v1 images or if there is no parent, shows "(no parent @@ -4730,6 +4738,7 @@ static DEVICE_ATTR(name, S_IRUGO, rbd_name_show, NULL); static DEVICE_ATTR(image_id, S_IRUGO, rbd_image_id_show, NULL); static DEVICE_ATTR(refresh, S_IWUSR, NULL, rbd_image_refresh); static DEVICE_ATTR(current_snap, S_IRUGO, rbd_snap_show, NULL); +static DEVICE_ATTR(snap_id, S_IRUGO, rbd_snap_id_show, NULL); static DEVICE_ATTR(parent, S_IRUGO, rbd_parent_show, NULL); static struct attribute *rbd_attrs[] = { @@ -4745,6 +4754,7 @@ static struct attribute *rbd_attrs[] = { &dev_attr_name.attr, &dev_attr_image_id.attr, &dev_attr_current_snap.attr, + &dev_attr_snap_id.attr, &dev_attr_parent.attr, &dev_attr_refresh.attr, NULL |