[PATCH] do_signal_stop: don't take tasklist_lock
do_signal_stop() does not need tasklist_lock anymore. So it does not need to do misc re-checks, and we can simplify the code. Signed-off-by: NOleg Nesterov <oleg@tv-sign.ru> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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