btrfs: Use real device structure to verify dev extent
[sfrench/cifs-2.6.git] / fs / btrfs / volumes.c
index 2576b1a379c9569caf44bc4a2e488933ff792755..3e4f8f88353e163454f0ee953a14f92679cfe7bc 100644 (file)
@@ -7825,6 +7825,18 @@ static int verify_one_dev_extent(struct btrfs_fs_info *fs_info,
                ret = -EUCLEAN;
                goto out;
        }
+
+       /* It's possible this device is a dummy for seed device */
+       if (dev->disk_total_bytes == 0) {
+               dev = find_device(fs_info->fs_devices->seed, devid, NULL);
+               if (!dev) {
+                       btrfs_err(fs_info, "failed to find seed devid %llu",
+                                 devid);
+                       ret = -EUCLEAN;
+                       goto out;
+               }
+       }
+
        if (physical_offset + physical_len > dev->disk_total_bytes) {
                btrfs_err(fs_info,
 "dev extent devid %llu physical offset %llu len %llu is beyond device boundary %llu",