linux-kernel - Re: [PATCH] scatterlist: Update size type to support greater then 4GB size.

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Date:   Mon, 24 Dec 2018 13:37:00 +0530
From:   Ashish Mhetre <amhetre@...dia.com>
To:     Christoph Hellwig <hch@...radead.org>
CC:     <herbert@...dor.apana.org.au>, <davem@...emloft.net>,
        <axboe@...nel.dk>, <adrian.hunter@...el.com>,
        <ulf.hansson@...aro.org>, <linux-crypto@...r.kernel.org>,
        <linux-nvme@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
        <vdumpa@...dia.com>, <mmaddireddy@...dia.com>,
        <linux-tegra@...r.kernel.org>, <Snikam@...dia.com>
Subject: Re: [PATCH] scatterlist: Update size type to support greater then 4GB
 size.

We don't have a real use-case for this. Understanding the consequences, 
we are questioning the patch in downstream itself.
Please ignore this patch for now.

On 12/12/18 1:36 PM, Christoph Hellwig wrote:
> scatterlist elements longer than 4GB sound odd.  Please submit it
> in a series with your actual user so that we can help figuring out
> if it really makes sense or if there is a better way to solve your
> problem.
> 
> As is this patch will massively increase the memory usage for all users
> of struct scatterlist, so you better have a really good reason.
>