linux-kernel - Re: [RFC PATCH 2/2] lightnvm: add non-continuous lun target creation support

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Message-ID: <56A10117.2000002@bjorling.me>
Date:	Thu, 21 Jan 2016 17:02:31 +0100
From:	Matias Bjørling <m@...rling.me>
To:	Wenwei Tao <ww.tao0320@...il.com>,
	Matias Bjørling <mb@...htnvm.io>
Cc:	linux-kernel@...r.kernel.org, linux-block@...r.kernel.org
Subject: Re: [RFC PATCH 2/2] lightnvm: add non-continuous lun target creation
 support

On 01/21/2016 02:58 PM, Wenwei Tao wrote:
> 2016-01-21 17:49 GMT+08:00 Matias Bjørling <mb@...htnvm.io>:
>> On 01/21/2016 10:47 AM, Wenwei Tao wrote:
>> <snip>
>>>
>>> Currently a bitmap of luns already added into nvm_dev, every time we
>>> map the luns we check the bitmap.
>>> I don't quite understand why we need to add another bitmap?
>>
>> We can definitely use lun_map that you introduced in the patch.
>>
> Then I think the suggestion:
>
>> How about extending the functionality to take a bitmap of luns, which
>> defines the luns that we like to map. Do the necessary check if any of
>> them is in use, and then proceed if all is available?
>
> has already been implemented in this patch.

Yeap :)