Btrfs: Add back pointers from extents to the btree or file referencing them

Signed-off-by: Chris Mason <chris.mason@oracle.com>

1 files changed, 17 insertions, 3 deletions

diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index b0d637787264..5b1f90f06e03 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -496,7 +496,10 @@ next_slot:
                                                    sizeof(old));
                                 if (disk_bytenr != 0) {
                                         ret = btrfs_inc_extent_ref(trans, root,
-                                                 disk_bytenr, disk_num_bytes);
+                                                 disk_bytenr, disk_num_bytes,
+                                                 root->root_key.objectid,
+                                                 trans->transid,
+                                                 key.objectid, end);
                                         BUG_ON(ret);
                                 }
                         }
@@ -541,6 +544,14 @@ next_slot:
                         u64 disk_bytenr = 0;
                         u64 disk_num_bytes = 0;
                         u64 extent_num_bytes = 0;
+                        u64 root_gen;
+
+                        if (leaf != root->node) {
+                                root_gen =
+                                        btrfs_header_generation(path->nodes[1]);
+                        } else {
+                                root_gen = btrfs_header_generation(leaf);
+                        }
                         if (found_extent) {
                                 disk_bytenr =
                                       btrfs_file_extent_disk_bytenr(leaf,
@@ -562,8 +573,11 @@ next_slot:
                         if (found_extent && disk_bytenr != 0) {
                                 inode->i_blocks -= extent_num_bytes >> 9;
                                 ret = btrfs_free_extent(trans, root,
-                                                        disk_bytenr,
-                                                        disk_num_bytes, 0);
+                                                disk_bytenr,
+                                                disk_num_bytes,
+                                                root->root_key.objectid,
+                                                root_gen, inode->i_ino,
+                                                key.offset, 0);
                         }
 
                         BUG_ON(ret);