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Date: Wed, 08 Oct 2014 12:04:52 -0700 From: Eric Dumazet <eric.dumazet@...il.com> To: Eric Wheeler <netdev@...ts.ewheeler.net> Cc: Shahed Shaikh <shahed.shaikh@...gic.com>, Stephen Hemminger <stephen@...workplumber.org>, netdev <netdev@...r.kernel.org>, Rasesh Mody <rasesh.mody@...gic.com> Subject: Re: [PATCH net] bna: page allocation during interrupts to use a mempool. On Wed, 2014-10-08 at 12:01 -0700, Eric Wheeler wrote: > On Tue, 7 Oct 2014, Eric Dumazet wrote: > > > On Tue, 2014-10-07 at 17:48 -0700, Eric Wheeler wrote: > > > >> Just += unmap->vector.len still did not work (same backtrace), so I've > >> rebuilt with PAGE_SIZE<<2 and so far so good. I'll let it run all night > >> and see if we get any problems. > > > > Further inspection of the driver told me that unmap->vector.len should > > be 16384 already. (same than PAGE_SIZE << 2) > > (set at line 304, drivers/net/ethernet/brocade/bna/bnad.c) > > > > So you might hit memory fragmentation issues. > > > > Do you have CONFIG_COMPACTION=y in your .config ? > > We're still having the backtrace. What is the output of free cat /proc/sys/vm/min_free_kbytes cat /proc/buddyinfo -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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