ubifs_fsync      1226 fs/ubifs/dir.c 	.fsync          = ubifs_fsync,
ubifs_fsync      1283 fs/ubifs/file.c 	.fsync          = ubifs_fsync,
ubifs_fsync      1614 fs/ubifs/ubifs.h int ubifs_fsync(struct file *file, struct dentry *dentry, int datasync);