diff --git a/modules/cas_cache/ocf_env.h b/modules/cas_cache/ocf_env.h
index 21a6b81..f14a474 100644
--- a/modules/cas_cache/ocf_env.h
+++ b/modules/cas_cache/ocf_env.h
@@ -431,6 +431,11 @@ static inline void env_spinlock_lock(env_spinlock *l)
 	spin_lock(l);
 }
 
+static inline int env_spinlock_trylock(env_spinlock *l)
+{
+	return spin_trylock(l) ? 0 : -OCF_ERR_NO_LOCK;
+}
+
 static inline void env_spinlock_unlock(env_spinlock *l)
 {
 	spin_unlock(l);
@@ -616,4 +621,21 @@ static inline uint32_t env_crc32(uint32_t crc, uint8_t const *data, size_t len)
 #define ENV_BUG()			BUG()
 #define ENV_BUG_ON(cond)		BUG_ON(cond)
 
+
+/* *** EXECUTION COTNEXT *** */
+static inline unsigned env_get_execution_context(void)
+{
+	return get_cpu();
+}
+
+static inline void env_put_execution_context(unsigned ctx)
+{
+	put_cpu();
+}
+
+static inline unsigned env_get_execution_context_count(void)
+{
+	return num_online_cpus();
+}
+
 #endif /* __OCF_ENV_H__ */
diff --git a/ocf b/ocf
index 43e8905..9a46c40 160000
--- a/ocf
+++ b/ocf
@@ -1 +1 @@
-Subproject commit 43e8905456aa0bd4fdf12c3e8aa374c641684471
+Subproject commit 9a46c402b2e8398da7a3ee212faf041b3f01f958