Re: RFC: patch to allow lock-free traversal of lists with insertion

[David S. Miller]

   From: "Paul McKenney" <[e-mail]>
   Date: Mon, 8 Oct 2001 22:27:44 -0700
   
   All other CPUs must observe the preceding stores before the following
   stores.
 ...
   Does this do the trick?
   
              membar #StoreStore
   
Yes.

   The IPIs and related junk are I believe needed only on Alpha, which has
   no single memory-barrier instruction that can do wmbdd()'s job.  Given
   that Alpha seems to be on its way out, this did not seem to me to be
   too horrible.
   
I somehow doubt that you need an IPI to implement the equivalent of
"membar #StoreStore" on Alpha.  Richard?

Franks a lot,
David S. Miller
[e-mail]