linux-kernel - Re: [PATCH] null-blk: save memory footprint for struct nullb

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Message-Id: <165094029875.72509.3390339725421776639.b4-ty@kernel.dk>
Date:   Mon, 25 Apr 2022 20:31:38 -0600
From:   Jens Axboe <axboe@...nel.dk>
To:     chaitanya.kulkarni@....com, shinichiro.kawasaki@....com,
        yukuai3@...wei.com
Cc:     linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
        yi.zhang@...wei.com
Subject: Re: [PATCH] null-blk: save memory footprint for struct nullb_cmd

On Tue, 26 Apr 2022 10:21:33 +0800, Yu Kuai wrote:
> Total 16 bytes can be saved in two ways:
> 
> 1) The field 'bio' will only be used in bio based mode, and the field
>    'rq' will only be used in mq mode. Since they won't be used in the
>    same time, declare a union for them.
> 2) The field 'bool fake_timeout' can be placed in the hole after the
>    field 'error'.
> 
> [...]

Applied, thanks!

[1/1] null-blk: save memory footprint for struct nullb_cmd
      commit: 8ba816b23abd2a9a05705f3d00b8653f8be73015

Best regards,
-- 
Jens Axboe