函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:lib\btree.c Create Date:2022-07-27 07:50:30
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：dec_key

函数原型：static void dec_key(struct btree_geo *geo, unsigned long *key)

返回类型：void

参数：

类型参数名称
struct btree_geo *geo
unsigned long *key
140  以i大于等于0循环
141  val等于key[i]
142  key[i]等于val减1
143  如果val则退出
调用者
名称描述
btree_get_prevUsually this function is quite similar to normal lookup. But the key of* a parent node may be smaller than the smallest key of all its siblings.* In such a case we cannot just return NULL, as we have only proven that no