swap_cgroup_cmpxchg

函数名称：swap_cgroup_cmpxchg - cmpxchg mem_cgroup's id for this swp_entry.*@ent: swap entry to be cmpxchged*@old: old id*@new: new id* Returns old id at success, 0 at failure.* (There is no mem_cgroup using 0 as its id)

函数原型：unsigned short swap_cgroup_cmpxchg(swp_entry_t ent, unsigned short old, unsigned short new)

返回类型：unsigned short

参数：

类型	参数	名称
swp_entry_t	ent
unsigned short	old
unsigned short	new

105

sc等于lookup_swap_cgroup(ent, & ctrl)

107

spin_lock_irqsave( & lock, flags)

108

retval等于id

109

如果retval恒等于old则id等于new

111

否则retval等于0

113

spin_unlock_irqrestore( & lock, flags)

114

返回:retval

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