diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index 1b7e354..302c3f9 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -1425,7 +1425,6 @@
 	struct tree_mod_root *old_root = NULL;
 	u64 old_generation = 0;
 	u64 logical;
-	u32 blocksize;
 
 	eb_root = btrfs_read_lock_root_node(root);
 	tm = __tree_mod_log_oldest_root(root->fs_info, eb_root, time_seq);
@@ -1444,8 +1443,7 @@
 	if (old_root && tm && tm->op != MOD_LOG_KEY_REMOVE_WHILE_FREEING) {
 		btrfs_tree_read_unlock(eb_root);
 		free_extent_buffer(eb_root);
-		blocksize = root->nodesize;
-		old = read_tree_block(root, logical, blocksize, 0);
+		old = read_tree_block(root, logical, 0);
 		if (WARN_ON(!old || !extent_buffer_uptodate(old))) {
 			free_extent_buffer(old);
 			btrfs_warn(root->fs_info,
@@ -1692,8 +1690,7 @@
 			uptodate = 0;
 		if (!cur || !uptodate) {
 			if (!cur) {
-				cur = read_tree_block(root, blocknr,
-							 blocksize, gen);
+				cur = read_tree_block(root, blocknr, gen);
 				if (!cur || !extent_buffer_uptodate(cur)) {
 					free_extent_buffer(cur);
 					return -EIO;
@@ -1872,7 +1869,6 @@
 	BUG_ON(level == 0);
 
 	eb = read_tree_block(root, btrfs_node_blockptr(parent, slot),
-			     root->nodesize,
 			     btrfs_node_ptr_generation(parent, slot));
 	if (eb && !extent_buffer_uptodate(eb)) {
 		free_extent_buffer(eb);
@@ -2507,7 +2503,7 @@
 	btrfs_release_path(p);
 
 	ret = -EAGAIN;
-	tmp = read_tree_block(root, blocknr, blocksize, 0);
+	tmp = read_tree_block(root, blocknr, 0);
 	if (tmp) {
 		/*
 		 * If the read above didn't mark this buffer up to date,