netdev - Re: [PATCH] mm: Replace all open encodings for NUMA_NO

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Date:   Mon, 26 Nov 2018 12:15:04 +0530
From:   Anshuman Khandual <anshuman.khandual@....com>
To:     Vinod Koul <vkoul@...nel.org>
Cc:     linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        ocfs2-devel@....oracle.com, linux-fbdev@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, netdev@...r.kernel.org,
        intel-wired-lan@...ts.osuosl.org, linux-media@...r.kernel.org,
        iommu@...ts.linux-foundation.org, linux-rdma@...r.kernel.org,
        dmaengine@...r.kernel.org, linux-block@...r.kernel.org,
        sparclinux@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        linux-ia64@...r.kernel.org, linux-alpha@...r.kernel.org,
        akpm@...ux-foundation.org, jiangqi903@...il.com, hverkuil@...all.nl
Subject: Re: [PATCH] mm: Replace all open encodings for NUMA_NO_NODE



On 11/24/2018 07:35 PM, Vinod Koul wrote:
> On 23-11-18, 15:24, Anshuman Khandual wrote:
> 
>> --- a/drivers/dma/dmaengine.c
>> +++ b/drivers/dma/dmaengine.c
>> @@ -386,7 +386,8 @@ EXPORT_SYMBOL(dma_issue_pending_all);
>>  static bool dma_chan_is_local(struct dma_chan *chan, int cpu)
>>  {
>>  	int node = dev_to_node(chan->device->dev);
>> -	return node == -1 || cpumask_test_cpu(cpu, cpumask_of_node(node));
>> +	return node == NUMA_NO_NODE ||
>> +		cpumask_test_cpu(cpu, cpumask_of_node(node));
>>  }
> 
> I do not see dev_to_node being updated first, that returns -1 so I would
> prefer to check for -1 unless it return NUMA_NO_NODE

Sure will update dev_to_node() to return NUMA_NO_NODE as well.