a question about __down() in Linux/arch/i386/kernel/semaphore.c

From: Edward Shao \(邵治國\ (szg90@cs.ccu.edu.tw)
Date: Mon Aug 05 2002 - 09:33:58 EST

Hi,

I have a question about __down() in kernel 2.4.18
(Linux/arch/i386/kernel/semaphore.c)
I found the last line of __down() is
wake_up(&sem->wait);
but in kernel 2.5.28, i didn't see this line..
is this line necessary in kernel 2.4.18?
why?

Thank you very much.

Best Regard!!!

-Edward Shao-

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