exec: consolidate 2 fast-paths
Now that we don't pre-allocate the new ->sighand, we can kill the first fast path, it doesn't make sense any longer. At best, it can save one "list_empty()" check but leads to the code duplication. Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Cc: Roland McGrath <roland@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -752,15 +752,6 @@ static int de_thread(struct task_struct *tsk)
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struct task_struct *leader = NULL;
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int count;
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/*
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* If we don't share sighandlers, then we aren't sharing anything
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* and we can just re-use it all.
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*/
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if (atomic_read(&oldsighand->count) <= 1) {
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exit_itimers(sig);
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return 0;
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}
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if (thread_group_empty(tsk))
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goto no_thread_group;
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