Find oldest child (not sibling) of a process (task

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Find oldest child (not sibling) of a process (task_struct)

Time：10-07

From this post and this codebase, I know that there are pointers for

So with Oldest child, how do I get?

I am thinking of access "children" pointer (current->children) and traverse to the end of that doubly linked list.

CodePudding user response：

Get the oldest sibling of the youngest child:

current->p_cptr->p_osptr