Re: [rfc] "fair" rw spinlocks
From: Andi Kleen
Date: Wed Nov 25 2009 - 03:49:29 EST
David Miller <davem@xxxxxxxxxxxxx> writes:
>
> I think nobody would notice if you changed tasklist_lock into
> a spinlock_t, and this would solve the DoS because at least on
> x86 you'd end up with the ticket spinlocks.
iirc tasklist_lock was one of them who could be potentially nested.
So just turning it into a spinlock might deadlock.
-Andi
--
ak@xxxxxxxxxxxxxxx -- Speaking for myself only.
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