Messages in this thread | | | Subject | Re: [PATCH] virtio-net: fix a race on 32bit arches | From | Eric Dumazet <> | Date | Wed, 06 Jun 2012 22:25:57 +0200 |
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On Wed, 2012-06-06 at 21:19 +0100, Ben Hutchings wrote: > On Wed, 2012-06-06 at 22:08 +0200, Eric Dumazet wrote: > > On Wed, 2012-06-06 at 22:58 +0300, Michael S. Tsirkin wrote: > > > > > Absolutely, I am talking about virtio here. I'm not kicking > > > u64_stats_sync idea I am just saying that simple locking > > > would work for virtio and might be better as it > > > gives us a way to get counters atomically. > > > > Which lock do you own in the RX path ? > > > > You'll have to add a lock in fast path. This sounds really a bad choice > > to me. > > You have the NAPI 'lock', so when gathering stats you can synchronise > using napi_disable() ;-)
Nice, this adds one new bug in network stack.
Really guys, can we stop this thread, please ?
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