mem_cgroup_margin

函数名称：mem_cgroup_margin - calculate chargeable space of a memory cgroup*@memcg: the memory cgroup* Returns the maximum amount of memory @mem can be charged with, in* pages.

函数原型：static unsigned long mem_cgroup_margin(struct mem_cgroup *memcg)

返回类型：unsigned long

参数：

类型	参数	名称
struct mem_cgroup *	memcg

1291

margin等于0

1295

count等于page_counter_read( & Accounted resources )

1296

limit等于READ_ONCE(max)

1297

如果count小于limit则margin等于limit减count

1300

如果Whether legacy memory+swap accounting is active 则

1301

count等于page_counter_read( & Legacy consumer-oriented counters )

1302

limit等于READ_ONCE(max)

1303

如果count小于等于limit则margin等于两数取小(margin, limit - count)

1305

否则margin等于0

1309

返回:margin

**调用者**
名称	描述
try_charge

源代码转换工具开放的插件接口	X
支持：c/c++/esqlc/java Oracle/Informix/Mysql 插件可实现：逻辑报告代码生成和批量转换代码

函数逻辑报告