linux-kernel - Re: [GIT PULL 18/25] lightnvm: set target over-provision on create ioctl

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Date:   Fri, 5 Jan 2018 11:33:49 -0800
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Matias Bjørling <m@...rling.me>, axboe@...com
Cc:     linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
        Javier González <javier@...xlabs.com>,
        Hans Holmberg <hans.holmberg@...xlabs.com>
Subject: Re: [GIT PULL 18/25] lightnvm: set target over-provision on create
 ioctl

On 01/05/2018 05:16 AM, Matias Bjørling wrote:
> From: Javier González <javier@...xlabs.com>
> 
> Allow to set the over-provision percentage on target creation. In case
> that the value is not provided, fall back to the default value set by
> the target.
> 
> In pblk, set the default OP to 11% of the total size of the device

> +#define PBLK_DEFAULT_OP (11)

Hi,
Just curious -- where does 11 come from?  Is it a spec value?

thanks,
-- 
~Randy