btrfs: alloc_reserved_file_extent trace point should use extent_root

Even though a separate root is passed in, we're still operating on the
extent root.  Let's use that for the trace point.

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index e4b3fc07f162..e8b8e309e4ab 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -8105,7 +8105,8 @@ static int alloc_reserved_file_extent(struct btrfs_trans_handle *trans,
                         ins->objectid, ins->offset);
                 BUG();
         }
-        trace_btrfs_reserved_extent_alloc(root, ins->objectid, ins->offset);
+        trace_btrfs_reserved_extent_alloc(fs_info->extent_root,
+                                          ins->objectid, ins->offset);
         return ret;
 }