linux-kernel - Re: [PATCH rdma-next v1 1/2] lib/scatterlist: Fix wrong update of orig

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Message-ID: <YNwaVTT0qmQdxaZz@infradead.org>
Date:   Wed, 30 Jun 2021 08:16:37 +0100
From:   Christoph Hellwig <hch@...radead.org>
To:     Leon Romanovsky <leon@...nel.org>
Cc:     Christoph Hellwig <hch@...radead.org>,
        Doug Ledford <dledford@...hat.com>,
        Jason Gunthorpe <jgg@...dia.com>,
        Maor Gottlieb <maorg@...dia.com>,
        Dennis Dalessandro <dennis.dalessandro@...nelisnetworks.com>,
        linux-kernel@...r.kernel.org, linux-rdma@...r.kernel.org,
        Mike Marciniszyn <mike.marciniszyn@...nelisnetworks.com>,
        Yishai Hadas <yishaih@...dia.com>,
        Zhu Yanjun <zyjzyj2000@...il.com>
Subject: Re: [PATCH rdma-next v1 1/2] lib/scatterlist: Fix wrong update of
 orig_nents

On Wed, Jun 30, 2021 at 10:02:11AM +0300, Leon Romanovsky wrote:
> Another possible solution is to change __sg_alloc_table()/__sg_alloc_table_from_pages
> to return total_nents and expect from the users to store it internally and pass
> it later to the __sg_free_table().
> 
> Something like that.

Yes, that sounds pretty reasonable.