linux-kernel - Re: [RFC PATCH] nvmet-tcp: Don't kmap() pages which can't come from HIGHMEM

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Message-ID: <960e89d2-b32a-4da7-97fe-7157f905fa9f@nvidia.com>
Date:   Wed, 17 Aug 2022 23:42:39 +0000
From:   Chaitanya Kulkarni <chaitanyak@...dia.com>
To:     "Fabio M. De Francesco" <fmdefrancesco@...il.com>
CC:     "linux-nvme@...ts.infradead.org" <linux-nvme@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Sagi Grimberg <sagi@...mberg.me>,
        Keith Busch <kbusch@...nel.org>,
        Ira Weiny <ira.weiny@...el.com>,
        Christoph Hellwig <hch@....de>,
        Chaitanya Kulkarni <chaitanyak@...dia.com>
Subject: Re: [RFC PATCH] nvmet-tcp: Don't kmap() pages which can't come from
 HIGHMEM


> @Chaitanya:
> 
> Since this is a mere simplification and shorten of code, I suppose I can skip
> the performance tests. Ira and I have still hundreds of call sites with kmap()
> and kmap_atomic() which we should care of, therefore we prefer to leave alone
> everything that is not strictly necessary for the deprecated API deletions.
> 
> Thanks to you all,
> 

fine by me.

-ck