ubifs_fsync      1653 fs/ubifs/dir.c 	.fsync          = ubifs_fsync,
ubifs_fsync      1669 fs/ubifs/file.c 	.fsync          = ubifs_fsync,
ubifs_fsync      1990 fs/ubifs/ubifs.h int ubifs_fsync(struct file *file, loff_t start, loff_t end, int datasync);