DEFINE_OCFS2_FILE_OPS
DEFINE_OCFS2_FILE_OPS(ocfs2_file_open);
DEFINE_OCFS2_FILE_OPS(ocfs2_file_release);
DEFINE_OCFS2_FILE_OPS(ocfs2_sync_file);
DEFINE_OCFS2_FILE_OPS(ocfs2_file_write_iter);
DEFINE_OCFS2_FILE_OPS(ocfs2_file_read_iter);
DEFINE_OCFS2_FILE_OPS(ocfs2_file_splice_read);