linux-kernel - RE:(2) [PATCH v2 12/14] block: add helper function for iteration of bip's bvec

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Date:   Wed, 17 May 2023 11:35:12 +0900
From:   Jinyoung CHOI <j-young.choi@...sung.com>
To:     "hch@....de" <hch@....de>
CC:     "axboe@...nel.dk" <axboe@...nel.dk>,
        "kbusch@...nel.org" <kbusch@...nel.org>,
        "sagi@...mberg.me" <sagi@...mberg.me>,
        "jejb@...ux.ibm.com" <jejb@...ux.ibm.com>,
        "martin.petersen@...cle.com" <martin.petersen@...cle.com>,
        "johannes.thumshirn@....com" <johannes.thumshirn@....com>,
        "kch@...dia.com" <kch@...dia.com>,
        "willy@...radead.org" <willy@...radead.org>,
        "linux-block@...r.kernel.org" <linux-block@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE:(2) [PATCH v2 12/14] block: add helper function for iteration of
 bip's bvec

>On Wed, May 10, 2023 at 05:59:41PM +0900, Jinyoung CHOI wrote:
>> bip_for_each_vec() performs the iteration in a page unit.
>> 
>> Since a bio_vec of bip is composed of multi-page in the block, a macro
>> that can be carried out in multi-page units has been added.
>
>The naming here is a bit confused.  The rest of the block layers uses
>_segment for the per-page iterators and _vec for the one that doesn't
>break up.  I'd suggest we follow this naming scheme here.  And also
>skip the extra for_each_mp_bvec level, just like we don't have that
>intermediate level for bio_for_each_vec

Thank you for letting me know. I was not aware of the rule.
And as you said, I will make one without making the middle level.

Best Regards,
Jinyoung.