- unsigned len = bkey_val_bytes(d.k) -
- offsetof(struct bch_dirent, d_name);
+ unsigned bkey_u64s = bkey_val_u64s(d.k);
+ unsigned bkey_bytes = bkey_u64s * sizeof(u64);
+ u64 last_u64 = ((u64*)d.v)[bkey_u64s - 1];
+#if CPU_BIG_ENDIAN
+ unsigned trailing_nuls = last_u64 ? __builtin_ctzll(last_u64) / 8 : 64 / 8;
+#else
+ unsigned trailing_nuls = last_u64 ? __builtin_clzll(last_u64) / 8 : 64 / 8;
+#endif
+
+ return bkey_bytes -
+ offsetof(struct bch_dirent, d_name) -
+ trailing_nuls;
+}