diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 7d604524e83c..de5785117a47 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -2004,7 +2004,7 @@ static noinline_for_stack bool lock_extent_buffer_for_io(struct extent_buffer *e
 
 		btrfs_set_header_flag(eb, BTRFS_HEADER_FLAG_WRITTEN);
 		percpu_counter_add_batch(&fs_info->dirty_metadata_bytes,
-					 -eb->len,
+					 -(s64)eb->len,
 					 fs_info->dirty_metadata_batch);
 		ret = true;
 	} else {
@@ -3774,7 +3774,7 @@ void btrfs_clear_buffer_dirty(struct btrfs_trans_handle *trans,
 		return;
 
 	buffer_tree_clear_mark(eb, PAGECACHE_TAG_DIRTY);
-	percpu_counter_add_batch(&fs_info->dirty_metadata_bytes, -eb->len,
+	percpu_counter_add_batch(&fs_info->dirty_metadata_bytes, -(s64)eb->len,
 				 fs_info->dirty_metadata_batch);
 
 	for (int i = 0; i < num_extent_folios(eb); i++) {