shmem_unlink     1856 mm/shmem.c     	return shmem_unlink(dir, dentry);
shmem_unlink     1874 mm/shmem.c     		(void) shmem_unlink(new_dir, new_dentry);
shmem_unlink     2422 mm/shmem.c     	.unlink		= shmem_unlink,