shmem_unlink     3002 mm/shmem.c     	return shmem_unlink(dir, dentry);
shmem_unlink     3082 mm/shmem.c     		(void) shmem_unlink(new_dir, new_dentry);
shmem_unlink     3819 mm/shmem.c     	.unlink		= shmem_unlink,