1 files changed, 2 insertions, 0 deletions

diff --git a/fs/btrfs/extent_map.h b/fs/btrfs/extent_map.h
index 679225555f7b..922943ce29e8 100644
--- a/fs/btrfs/extent_map.h
+++ b/fs/btrfs/extent_map.h
@@ -14,6 +14,7 @@
 #define EXTENT_FLAG_VACANCY 2 /* no file extent item found */
 #define EXTENT_FLAG_PREALLOC 3 /* pre-allocated extent */
 #define EXTENT_FLAG_LOGGING 4 /* Logging this extent */
+#define EXTENT_FLAG_FILLING 5 /* Filling in a preallocated extent */
 
 struct extent_map {
         struct rb_node rb_node;
@@ -24,6 +25,7 @@ struct extent_map {
         u64 mod_start;
         u64 mod_len;
         u64 orig_start;
+        u64 orig_block_len;
         u64 block_start;
         u64 block_len;
         u64 generation;