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Commit a3f6dfb7 authored by Oleg Nesterov's avatar Oleg Nesterov Committed by Linus Torvalds
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do_wait: kill the old BUG_ON, use while_each_thread() 



do_wait() does BUG_ON(tsk->signal != current->signal), this looks like a
raher obsolete check.  At least, I don't think do_wait() is the best place
to verify that all threads have the same ->signal.  Remove it.

Also, change the code to use while_each_thread().

Signed-off-by: default avatarOleg Nesterov <oleg@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
Acked-by: default avatarRoland McGrath <roland@redhat.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 64a16caf

kernel/exit.c

+1 −3
Original line number Diff line number Diff line
@@ -1595,9 +1595,7 @@ static long do_wait(struct wait_opts *wo) 


		if (wo->wo_flags & __WNOTHREAD)

			break;

		tsk = next_thread(tsk);

		BUG_ON(tsk->signal != current->signal);

	} while (tsk != current);

	} while_each_thread(current, tsk);

	read_unlock(&tasklist_lock);



notask: