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Date:   Thu, 21 Apr 2022 10:49:09 -0700
From:   Ira Weiny <ira.weiny@intel.com>
To:     Alaa Mohamed <eng.alaamohamedsoliman.am@gmail.com>
Cc:     outreachy@lists.linux.dev, jesse.brandeburg@intel.com,
        anthony.l.nguyen@intel.com, davem@davemloft.net, kuba@kernel.org,
        pabeni@redhat.com, intel-wired-lan@lists.osuosl.org,
        netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v5] igb: Convert kmap() to kmap_local_page()
Message-ID: <YmGZFfcY/Yz6Iv1Y@iweiny-desk3>
References: <20220419234313.10324-1-eng.alaamohamedsoliman.am@gmail.com>
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On Wed, Apr 20, 2022 at 01:43:13AM +0200, Alaa Mohamed wrote:
> kmap() is being deprecated and these usages are all local to the thread
> so there is no reason kmap_local_page() can't be used.
> 
> Replace kmap() calls with kmap_local_page().
> 
> Signed-off-by: Alaa Mohamed <eng.alaamohamedsoliman.am@gmail.com>

Reviewed-by: Ira Weiny <ira.weiny@intel.com>

> ---
> changes in V2:
> 	fix kunmap_local path value to take address of the mapped page.
> ---
> changes in V3:
> 	edit commit message to be clearer
> ---
> changes in V4:
> 	edit the commit message
> ---
> changes in V5:
> 	-edit commit subject
> 	-edit commit message
> ---
>  drivers/net/ethernet/intel/igb/igb_ethtool.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/net/ethernet/intel/igb/igb_ethtool.c b/drivers/net/ethernet/intel/igb/igb_ethtool.c
> index 2a5782063f4c..c14fc871dd41 100644
> --- a/drivers/net/ethernet/intel/igb/igb_ethtool.c
> +++ b/drivers/net/ethernet/intel/igb/igb_ethtool.c
> @@ -1798,14 +1798,14 @@ static int igb_check_lbtest_frame(struct igb_rx_buffer *rx_buffer,
>  
>  	frame_size >>= 1;
>  
> -	data = kmap(rx_buffer->page);
> +	data = kmap_local_page(rx_buffer->page);
>  
>  	if (data[3] != 0xFF ||
>  	    data[frame_size + 10] != 0xBE ||
>  	    data[frame_size + 12] != 0xAF)
>  		match = false;
>  
> -	kunmap(rx_buffer->page);
> +	kunmap_local(data);
>  
>  	return match;
>  }
> -- 
> 2.35.2
>