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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: Oleg Nesterov <oleg@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
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>
This commit is contained in:
Oleg Nesterov 2009-06-17 16:27:41 -07:00 committed by Linus Torvalds
parent 64a16caf5e
commit a3f6dfb729
1 changed files with 1 additions and 3 deletions
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4
kernel/exit.c
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@ -1595,9 +1595,7 @@ repeat:
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: