Messages in this thread | | | Date | Sun, 3 Feb 2008 12:53:02 +0200 | From | "Pekka Enberg" <> | Subject | Re: [rfc] direct IO submission and completion scalability issues |
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Hi Nick,
On Feb 3, 2008 11:52 AM, Nick Piggin <npiggin@suse.de> wrote: > +asmlinkage void smp_call_function_fast_interrupt(void) > +{
[snip]
> + while (!list_empty(&list)) { > + struct call_single_data *data; > + > + data = list_entry(list.next, struct call_single_data, list); > + list_del(&data->list); > + > + data->func(data->info); > + if (data->wait) { > + smp_mb(); > + data->wait = 0;
Why do we need smp_mb() here (maybe add a comment to keep Andrew/checkpatch happy)?
Pekka
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