diff --git a/env/posix/ocf_env.h b/env/posix/ocf_env.h
index c175c31..55fbe0a 100644
--- a/env/posix/ocf_env.h
+++ b/env/posix/ocf_env.h
@@ -124,6 +124,16 @@ static inline void env_free(const void *ptr)
 	free((void *)ptr);
 }
 
+static inline void *env_vmalloc_flags(size_t size, int flags)
+{
+	return malloc(size);
+}
+
+static inline void *env_vzalloc_flags(size_t size, int flags)
+{
+	return env_zalloc(size, 0);
+}
+
 static inline void *env_vmalloc(size_t size)
 {
 	return malloc(size);
diff --git a/src/metadata/metadata_io.c b/src/metadata/metadata_io.c
index 2a20871..bc442b6 100644
--- a/src/metadata/metadata_io.c
+++ b/src/metadata/metadata_io.c
@@ -375,7 +375,7 @@ static int metadata_io_i_asynch(ocf_cache_t cache, ocf_queue_t queue, int dir,
 	if (count == 0)
 		return 0;
 
-	a_req = env_vzalloc(sizeof(*a_req));
+	a_req = env_vzalloc_flags(sizeof(*a_req), ENV_MEM_NOIO);
 	if (!a_req)
 		return -OCF_ERR_NO_MEM;
 
@@ -422,7 +422,7 @@ static int metadata_io_i_asynch(ocf_cache_t cache, ocf_queue_t queue, int dir,
 		compl_hndl(cache, context, a_req->error);
 
 	if (env_atomic_dec_return(&a_req->req_active) == 0)
-		env_free(a_req);
+		env_vfree(a_req);
 
 	return 0;