Process Family Tree code

[Ashok Sharma <aks6d@xxxxxxxxxxx>]

Pl explain the following code segment that iterates over a process's children 
  
  struct task_struct *task;
  struct list_head *list;
  
  list_for_each( list, &current->children)  {
  
      task = list_entry (list, struct task_struct, sibling);
  
  }
  
  The doubt is in respective  second arguments in the two functions. The code is from LKD2 
  
  Cheers
  Ashok

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