1 files changed, 2 insertions, 0 deletions

diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 2eed7f91f51a..7db4cfd03a98 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -1816,6 +1816,7 @@ again:
         em->start = key.offset;
         em->len = *num_bytes;
         em->block_start = 0;
+        em->block_len = em->len;
 
         if (type & BTRFS_BLOCK_GROUP_SYSTEM) {
                 ret = btrfs_add_system_chunk(trans, chunk_root, &key,
@@ -2323,6 +2324,7 @@ static int read_one_chunk(struct btrfs_root *root, struct btrfs_key *key,
         em->start = logical;
         em->len = length;
         em->block_start = 0;
+        em->block_len = em->len;
 
         map->num_stripes = num_stripes;
         map->io_width = btrfs_chunk_io_width(leaf, chunk);