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

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Date:	Tue, 30 Sep 2014 05:23:30 +0000
From:	Shahed Shaikh <shahed.shaikh@...gic.com>
To:	Stephen Hemminger <stephen@...workplumber.org>,
	Eric Wheeler <nevdev@...ts.ewheeler.net>
CC:	netdev <netdev@...r.kernel.org>,
	"rmody@...cade.com" <rmody@...cade.com>,
	Rasesh Mody <rasesh.mody@...gic.com>
Subject: RE: bna alloc_pages() order 2 failure in bnad.c
 bnad_rxq_refill_page()

+Rasesh, Maintainer of bna driver.

> -----Original Message-----
> From: netdev-owner@...r.kernel.org [mailto:netdev-
> owner@...r.kernel.org] On Behalf Of Stephen Hemminger
> Sent: Monday, September 29, 2014 9:59 PM
> To: Eric Wheeler
> Cc: netdev; 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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