netdev - Re: bna alloc_pages() order 2 failure in bnad.c bnad_rxq_refill

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Date:	Mon, 29 Sep 2014 09:28:33 -0700
From:	Stephen Hemminger <stephen@...workplumber.org>
To:	Eric Wheeler <nevdev@...ts.ewheeler.net>
Cc:	netdev@...r.kernel.org, rmody@...cade.com
Subject: Re: bna alloc_pages() order 2 failure in bnad.c
 bnad_rxq_refill_page()

On Sat, 27 Sep 2014 16:44:22 -0700 (PDT)
Eric Wheeler <nevdev@...ts.ewheeler.net> wrote:

> Hello all,
> 
> We're using the 10gbe bna card and sometimes we get pages and pages of 
> alloc_pages() failure backtraces like below.  (The maintainer 
> rmody@...cade.com does not appear to have an active email at brocade, but 
> cc'ing again just in case.)
> 
> It looks like bnad_rxq_refill_page() in bnad.c is allocating for the 
> receive queue but fails.  We've already tried bumping vm.min_free_kbytes 
> and vm.zone_reclaim_mode but it doesn't appear to help.
> 
> Suggestions?
> 
> Would it be appropriate to convert alloc_pages() to a mempool 
> implementation?
> 
> -Eric

Brocade sold the NIC hardware business off to Qlogic.
I told them to update MAINTAINERS but they haven't submitted a patch yet.


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