btrfs-progs: image: pass rb_root to find_collisions
[platform/upstream/btrfs-progs.git] / cmds-fi-usage.c
index 101a0c4..6c846c1 100644 (file)
@@ -1040,6 +1040,7 @@ void print_device_sizes(struct device_info *devinfo, unsigned unit_mode)
                pretty_size_mode(devinfo->device_size, unit_mode));
        printf("   Device slack: %*s%10s\n",
                (int)(20 - strlen("Device slack")), "",
-               pretty_size_mode(devinfo->device_size - devinfo->size,
+               pretty_size_mode(devinfo->device_size > 0 ?
+                       devinfo->device_size - devinfo->size : 0,
                        unit_mode));
 }