Messages in this thread | | | Date | Fri, 19 Jan 2018 18:14:42 +0100 | From | Peter Zijlstra <> | Subject | Re: net: r8169: a question of memory barrier in the r8169 driver |
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On Fri, Jan 19, 2018 at 02:11:18AM +0100, Francois Romieu wrote: > Peter Zijlstra <peterz@infradead.org> : > [...] > > There is only 1 variable afaict. Memory barriers need at least 2 in > > order to be able to do _anything_. > > I don't get your point: why don't {cur_tx, dirty_tx} qualify as said > two variables ?
There wasn't any cur_tx in the code you provided.
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