tree b139a0763d46143fbe5e36811b03c1987ef23b7a
parent 4b105cbbaf7c06e01c27391957dc3c446328d087
author Oleg Nesterov <oleg@redhat.com> 1245281254 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1245355431 -0700

ptrace_get_task_struct: s/tasklist/rcu/, make it static

- Use rcu_read_lock() instead of tasklist_lock to find/get the task
  in ptrace_get_task_struct().

- Make it static, it has no callers outside of ptrace.c.

- The comment doesn't match the reality, this helper does not do
  any checks. Beacuse it is really trivial and static I removed the
  whole comment.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>