1 files changed, 1 insertions, 0 deletions

diff --git a/fs/btrfs/extent_map.h b/fs/btrfs/extent_map.h
index accfedaeb513..fb6eeef06bb0 100644
--- a/fs/btrfs/extent_map.h
+++ b/fs/btrfs/extent_map.h
@@ -20,6 +20,7 @@ struct extent_map {
         /* all of these are in bytes */
         u64 start;
         u64 len;
+        u64 orig_start;
         u64 block_start;
         u64 block_len;
         unsigned long flags;