linux-kernel - Re: [PATCH RFC v2 for-6.8/block 01/18] block: add some bdev apis

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Message-ID: <718c424e-2514-8a14-b461-7e20b6355d16@huaweicloud.com>
Date:   Wed, 13 Dec 2023 09:10:05 +0800
From:   Yu Kuai <yukuai1@...weicloud.com>
To:     Christoph Hellwig <hch@...radead.org>, Jan Kara <jack@...e.cz>
Cc:     Yu Kuai <yukuai1@...weicloud.com>, axboe@...nel.dk,
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        yangerkun@...wei.com, "yukuai (C)" <yukuai3@...wei.com>
Subject: Re: [PATCH RFC v2 for-6.8/block 01/18] block: add some bdev apis

Hi,

在 2023/12/12 21:14, Christoph Hellwig 写道:
> On Mon, Dec 11, 2023 at 05:52:17PM +0100, Jan Kara wrote:
>>> +void bdev_associated_mapping(struct block_device *bdev,
>>> +			     struct address_space *mapping)
>>> +{
>>> +	mapping->host = bdev->bd_inode;
>>> +}
>>
>> Here I'm not sure - is the helper really a win? It seems a bit obscure to
>> me. This initialization of another mapping for a bdev looks really special.
> 
> If we want to hide bd_inode we'll something like this helper even if
> I don't particularly like it either.
> 
> But it might be a good idea to move out of this series and into the
> follow on removing bd_inode, as it's rather pointless without that
> context.

Yes, this sounds good, I'll remove this from v3.

Thanks,
Kuai

> .
>