uv_fs_fsync       753 src/unix/fs.c  int uv_fs_fsync(uv_loop_t* loop, uv_fs_t* req, uv_file file, uv_fs_cb cb) {
uv_fs_fsync      1805 src/win/fs.c   int uv_fs_fsync(uv_loop_t* loop, uv_fs_t* req, uv_file fd, uv_fs_cb cb) {