cached_stacks     192 kernel/fork.c  static DEFINE_PER_CPU(struct vm_struct *, cached_stacks[NR_CACHED_STACKS]);
cached_stacks     196 kernel/fork.c  	struct vm_struct **cached_vm_stacks = per_cpu_ptr(cached_stacks, cpu);
cached_stacks     222 kernel/fork.c  		s = this_cpu_xchg(cached_stacks[i], NULL);
cached_stacks     285 kernel/fork.c  			if (this_cpu_cmpxchg(cached_stacks[i],