linux-kernel - Re: [PATCH] loop: Only change blocksize when needed.

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Date:   Tue, 10 Mar 2020 20:23:46 +0000
From:   Chaitanya Kulkarni <Chaitanya.Kulkarni@....com>
To:     Martijn Coenen <maco@...roid.com>,
        "axboe@...nel.dk" <axboe@...nel.dk>, "hch@....de" <hch@....de>
CC:     "bvanassche@....org" <bvanassche@....org>,
        "linux-block@...r.kernel.org" <linux-block@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "kernel-team@...roid.com" <kernel-team@...roid.com>
Subject: Re: [PATCH] loop: Only change blocksize when needed.

Logically this is a right thing to do, but I wonder how much speedup
you are getting with these improvements ?
It will be great if you have some numbers so we all know the speedup.

Irrespective of that, this looks good to me.

Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@....com>

On 03/10/2020 06:17 AM, Martijn Coenen wrote:
> Return early in loop_set_block_size() if the requested block size is
> identical to the one we already have; this avoids expensive calls to
> freeze the block queue.
>
> Signed-off-by: Martijn Coenen<maco@...roid.com>