Messages in this thread | | | Date | Tue, 28 May 2013 17:32:07 -0400 | From | Rik van Riel <> | Subject | Re: [Patch v2] skbuff: Hide GFP_ATOMIC page allocation failures for dropped packets |
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On 05/28/2013 12:29 PM, Eric Dumazet wrote: > On Tue, 2013-05-28 at 13:15 -0300, Rafael Aquini wrote: > >> The real problem seems to be that more and more the network stack (drivers, perhaps) >> is relying on chunks of contiguous page-blocks without a fallback mechanism to >> order-0 page allocations. When memory gets fragmented, these alloc failures >> start to pop up more often and they scare ordinary sysadmins out of their paints. >> > > Where do you see that ? > > I see exactly the opposite trend. > > We have less and less buggy drivers, and we want to catch last > offenders.
These backtraces would still get printed out for drivers that DO do the right thing and fall back to smaller allocations.
The initial failed large allocation would cause a backtrace.
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