[問題] 一個slab中的問題 煩請幫忙

[rz600000 (suedeN  ￾   )]

struct array_cache
{
         unsigned int avail;
        .
        .
};

struct kmem_cache
{
          struct array_cache *array[NR_CPUS];
};



void *objp;
struct array_cache *ac;
struct keme_cache * cache_p;

ac = cache_p->array[0];


objp = ((void **)(ac+1))[--ac->avail];

Because the local cache array is stored right after the
ac descriptor  ==>是這句話讓ac+1的嗎

還有就是
objp = ((void **)(ac+1))[--ac->avail];
這句看不懂....

有人能夠解釋嗎...

煩請各位幫忙


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