diff --git a/blockstore_sync.cpp b/blockstore_sync.cpp
index c5ab19db..d8f79330 100644
--- a/blockstore_sync.cpp
+++ b/blockstore_sync.cpp
@@ -39,6 +39,7 @@ int blockstore::continue_sync(blockstore_operation *op)
     if (op->sync_state == SYNC_HAS_SMALL)
     {
         // No big writes, just fsync the journal
+        // FIXME: Add no-fsync mode
         BS_SUBMIT_GET_SQE(sqe, data);
         my_uring_prep_fsync(sqe, journal.fd, 0);
         data->iov = { 0 };
@@ -50,6 +51,7 @@ int blockstore::continue_sync(blockstore_operation *op)
     else if (op->sync_state == SYNC_HAS_BIG)
     {
         // 1st step: fsync data
+        // FIXME: Add no-fsync mode
         BS_SUBMIT_GET_SQE(sqe, data);
         my_uring_prep_fsync(sqe, data_fd, 0);
         data->iov = { 0 };
diff --git a/fio_engine.cpp b/fio_engine.cpp
index bdb0ea9d..4d92eb08 100644
--- a/fio_engine.cpp
+++ b/fio_engine.cpp
@@ -1,4 +1,5 @@
 // FIO engine to test Blockstore
+// fio -thread -ioengine=./libfio_blockstore.so -name=test -bs=4k -direct=1 -fsync=16 -iodepth=16 -rw=randwrite -size=1G
 
 #include "blockstore.h"
 extern "C" {