函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:lib\lockref.c Create Date:2022-07-27 07:16:12
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称: 计数大于0则递减

函数原型:int lockref_put_or_lock(struct lockref *lockref)

返回类型:int

参数:

类型参数名称
struct lockref *lockref
166  Note that the "cmpxchg()" reloads the "old" value for the* failure case.(count--;如果count小于等于1则退出;, 返回1;)
174  加自旋锁
175  如果count小于等于1则返回:0
177  count自减
178  自旋锁解锁
179  返回:1
调用者
名称描述
fast_dputTry to do a lockless dput(), and return whether that was successful