btrfs: remove unused parameter from readahead_tree_block

The parent_transid parameter has been unused since its introduction in
ca7a79ad8dbe2466 ("Pass down the expected generation number when reading
tree blocks").  In reada_tree_block, it was even wrongly set to leafsize.
Transid check is done in the proper read and readahead ignores errors.

Signed-off-by: David Sterba <dsterba@suse.cz>

1 files changed, 1 insertions, 2 deletions

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 44d04979f071..058abd088f0f 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -7486,8 +7486,7 @@ static noinline void reada_walk_down(struct btrfs_trans_handle *trans,
                                 continue;
                 }
 reada:
-                ret = readahead_tree_block(root, bytenr, blocksize,
-                                           generation);
+                ret = readahead_tree_block(root, bytenr, blocksize);
                 if (ret)
                         break;
                 nread++;