linux-kernel - Re: [PATCH 1/2] io_uring: Pass whole sqe to commands

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Date:   Thu, 20 Apr 2023 14:46:15 +0200
From:   Christoph Hellwig <hch@....de>
To:     Breno Leitao <leitao@...ian.org>
Cc:     Christoph Hellwig <hch@....de>, io-uring@...r.kernel.org,
        linux-nvme@...ts.infradead.org, asml.silence@...il.com,
        axboe@...nel.dk, leit@...com, linux-kernel@...r.kernel.org,
        linux-block@...r.kernel.org, sagi@...mberg.me, kbusch@...nel.org,
        ming.lei@...hat.com
Subject: Re: [PATCH 1/2] io_uring: Pass whole sqe to commands

On Thu, Apr 20, 2023 at 05:38:02AM -0700, Breno Leitao wrote:
> Since we are not coping the payload anymore, this is not necessary. Now
> we are copying 64 bytes for the single SQE or 128 bytes for double SQE.
> 
> Do you prefer I create a helper that returns the SQE size, instead of
> doing the left shift?

I think a helper would be nice.  And adding another sizeof(sqe) seems
more self documenting then the shift, but if you really prefer the
shift at least write a good comment explaining it.