diff --git a/bch_bindgen/build.rs b/bch_bindgen/build.rs
index 70f03076..c9a90fca 100644
--- a/bch_bindgen/build.rs
+++ b/bch_bindgen/build.rs
@@ -53,6 +53,8 @@ fn main() {
         .allowlist_function("cmd_.*")
         .allowlist_function(".*_cmds")
         .allowlist_function(".*bch2_.*")
+        .allowlist_function("bcache_fs_open")
+        .allowlist_function("bcache_fs_close")
         .allowlist_function("bio_.*")
         .allowlist_function("derive_passphrase")
         .allowlist_function("request_key")