Re: br_read_lock SMP race fix

From: Alan Cox (alan@lxorguk.ukuu.org.uk)
Date: Fri Jul 28 2000 - 08:34:18 EST


> >store of the counter decrement will leave the local cpu store buffer
> >in finite time (and thus be visible to the writer). [..]
>
> Hmmm, are you really sure? I thought there was always a finite deadline
> for a dirty buffer to be flushed to memory and to be made visible to all
> other CPUs.

In practice maybe, but in theory no.

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