函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:fs\namei.c Create Date:2022-07-29 10:34:51
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：set_root

函数原型：static void set_root(struct nameidata *nd)

返回类型：void

参数：

类型参数名称
struct nameidata *nd
803  fs等于fs
805  如果flags按位与RCU pathwalk mode; semi-internal 则
808  循环
809  seq等于ad_seqcount_begin - begin a seq-read critical section*@s: pointer to seqcount_t* Returns: count to be passed to read_seqcount_retry* read_seqcount_begin opens a read critical section of the given seqcount
810  root等于root
811  root_seq等于__read_seqcount_begin - begin a seq-read critical section (without barrier)*@s: pointer to seqcount_t* Returns: count to be passed to read_seqcount_retry* __read_seqcount_begin is like read_seqcount_begin, but has no smp_rmb()* barrier
812  当ad_seqcount_retry - end a seq-read critical section*@s: pointer to seqcount_t*@start: count, from read_seqcount_begin* Returns: 1 if retry is required, else 0* read_seqcount_retry closes a read critical section of the given seqcount循环
813  否则
814  get_fs_root(fs, & root)
815  flags或等于LOOKUP_ROOT_GRABBED
调用者
名称描述
get_link
handle_dots
path_initmust be paired with terminate_walk()