Re: [Patch v2] skbuff: Hide GFP_ATOMIC page allocation failures fordropped packets

[Rik van Riel]

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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