linux-kernel - Re: [PATCH 03/21] block: Add bio_for_each_folio

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Date:   Tue, 2 Nov 2021 16:33:39 -0600
From:   Jens Axboe <axboe@...nel.dk>
To:     "Darrick J. Wong" <djwong@...nel.org>,
        Matthew Wilcox <willy@...radead.org>
Cc:     Christoph Hellwig <hch@...radead.org>, linux-xfs@...r.kernel.org,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-block@...r.kernel.org
Subject: Re: [PATCH 03/21] block: Add bio_for_each_folio_all()

On 11/2/21 4:24 PM, Darrick J. Wong wrote:
> On Tue, Nov 02, 2021 at 08:24:14PM +0000, Matthew Wilcox wrote:
>> On Tue, Nov 02, 2021 at 12:13:22AM -0700, Christoph Hellwig wrote:
>>> On Mon, Nov 01, 2021 at 08:39:11PM +0000, Matthew Wilcox (Oracle) wrote:
>>>> +static inline
>>>> +void bio_first_folio(struct folio_iter *fi, struct bio *bio, int i)
>>>
>>> Please fix the weird prototype formatting here.
>>
>> I dunno, it looks weirder this way:
>>
>> -static inline
>> -void bio_first_folio(struct folio_iter *fi, struct bio *bio, int i)
>> +static inline void bio_first_folio(struct folio_iter *fi, struct bio *bio,
>> +               int i)
>>
>> Anyway, I've made that change, but I still prefer it the way I had it.
> 
> I /think/ Christoph meant:
> 
> static inline void
> bio_first_folio(...)
> 
> Though the form that you've changed it to is also fine.

I won't speak for Christoph, but basically everything else in block
follows the:

static inline void bio_first_folio(struct folio_iter *fi, struct bio *bio,
                                   int i)
{
}

format, and this one should as well.

-- 
Jens Axboe