内核是如何调用"zswap_writeback_entry"的?

科学之子 · **发表于 :** 2016-05-04 17:32

内核是如何调用"zswap_writeback_entry"的?
看到mm/zswap.c如下定义:

代码:

static const struct zpool_ops zswap_zpool_ops = {
   .evict = zswap_writeback_entry
};

代码:

static int zswap_writeback_entry(struct zpool *pool, unsigned long handle)

但我grep -r evict或zswap_writeback_entry 整个内核代码,没有发现?

而且static声明,其它文件能看到吗?不能看到,那它是谁调用的?
貌似是创建pool时用指针传到外部的

Wed May 4 17:52:08 CST 2016补充:

代码:

static int zbud_zpool_evict(struct zbud_pool *pool, unsigned long handle)
{
   if (pool->zpool && pool->zpool_ops && pool->zpool_ops->evict)
      return pool->zpool_ops->evict(pool->zpool, handle);
   else
      return -ENOENT;
}

static const struct zbud_ops zbud_zpool_ops = {
   .evict =   zbud_zpool_evict
};

但谁调用zbud_zpool_evict还不清楚,grep整个源代码还是没收获.

astolia · **发表于 :** 2016-05-05 0:18

什么眼神

代码:

$ grep -A 3 'zswap_writeback_entry(' ./mm/zswap.c
static int zswap_writeback_entry(struct zpool *pool, unsigned long handle);
static int zswap_pool_get(struct zswap_pool *pool);
static void zswap_pool_put(struct zswap_pool *pool);

--
static int zswap_writeback_entry(struct zpool *pool, unsigned long handle)
{
   struct zswap_header *zhdr;
   swp_entry_t swpentry;

代码:

$ grep -n 'evict(' ./mm/zbud.c 
static int zbud_zpool_evict(struct zbud_pool *pool, unsigned long handle)
      return pool->zpool_ops->evict(pool->zpool, handle);
         ret = pool->ops->evict(pool, first_handle);
         ret = pool->ops->evict(pool, last_handle);

科学之子 · **发表于 :** 2016-05-05 0:38

astolia 写道:

什么眼神

代码:

$ grep -A 3 'zswap_writeback_entry(' ./mm/zswap.c
static int zswap_writeback_entry(struct zpool *pool, unsigned long handle);
static int zswap_pool_get(struct zswap_pool *pool);
static void zswap_pool_put(struct zswap_pool *pool);

--
static int zswap_writeback_entry(struct zpool *pool, unsigned long handle)
{
   struct zswap_header *zhdr;
   swp_entry_t swpentry;

代码:

$ grep -n 'evict(' ./mm/zbud.c 
static int zbud_zpool_evict(struct zbud_pool *pool, unsigned long handle)
      return pool->zpool_ops->evict(pool->zpool, handle);
         ret = pool->ops->evict(pool, first_handle);
         ret = pool->ops->evict(pool, last_handle);

但是谁调用的"zbud_zpool_evict"我还是没搜到
感觉就像"凭空"被调了一样,而不是limit_hit之后被调用之类.

astolia · **发表于 :** 2016-05-05 14:19

科学之子写道:

但是谁调用的"zbud_zpool_evict"我还是没搜到
感觉就像"凭空"被调了一样,而不是limit_hit之后被调用之类.

astolia 写道:

什么眼神

代码:

$ grep -n 'evict(' ./mm/zbud.c 
static int zbud_zpool_evict(struct zbud_pool *pool, unsigned long handle)
      return pool->zpool_ops->evict(pool->zpool, handle);
         ret = pool->ops->evict(pool, first_handle);
         ret = pool->ops->evict(pool, last_handle);

内核是如何调用"zswap_writeback_entry"的?

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