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Linux Process Management(2) > manage memory as if it alone owned all the memory in
> the system.
> 4. When a process exits, it is placed into a special zombie
> state that is used to represent terminated processes until
> the parent calls wait() or waitpid()
> 5. The kernel representation of a running program as a task,
> and the user-space representation as a process.
> 2. P.16 The Process Descriptor and Task Structure
> 1. The kernel stores the processes in a circular doubly
> linked list called the task list.
> 2. The process descriptor contains the data that describe the
> executing program: running state, open files, the
> process's address space, pending signals, permission,
> semaphore, executing time...
> 3. The task_struct is allocated via the slab allocator to
> provide object reuse and cache coloring.
> 4. Prior to the 2.6 kernel series, the task_struct was stored
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