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Date:   Thu, 4 Feb 2021 08:29:47 +0100
From:   Christoph Hellwig <hch@lst.de>
To:     Dongli Zhang <dongli.zhang@oracle.com>
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Subject: Re: [PATCH RFC v1 2/6] swiotlb: convert variables to arrays
Message-ID: <20210204072947.GA29812@lst.de>
References: <20210203233709.19819-1-dongli.zhang@oracle.com> <20210203233709.19819-3-dongli.zhang@oracle.com>
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On Wed, Feb 03, 2021 at 03:37:05PM -0800, Dongli Zhang wrote:
> This patch converts several swiotlb related variables to arrays, in
> order to maintain stat/status for different swiotlb buffers. Here are
> variables involved:
> 
> - io_tlb_start and io_tlb_end
> - io_tlb_nslabs and io_tlb_used
> - io_tlb_list
> - io_tlb_index
> - max_segment
> - io_tlb_orig_addr
> - no_iotlb_memory
> 
> There is no functional change and this is to prepare to enable 64-bit
> swiotlb.

Claire Chang (on Cc) already posted a patch like this a month ago,
which looks much better because it actually uses a struct instead
of all the random variables.