Date:   Mon, 30 Jan 2023 11:36:19 +0100
From:   Christoph Hellwig <hch@lst.de>
To:     David Howells <dhowells@redhat.com>
Cc:     Christoph Hellwig <hch@lst.de>, Jens Axboe <axboe@kernel.dk>,
        Ilya Dryomov <idryomov@gmail.com>,
        "Michael S. Tsirkin" <mst@redhat.com>,
        Jason Wang <jasowang@redhat.com>,
        Minchan Kim <minchan@kernel.org>,
        Sergey Senozhatsky <senozhatsky@chromium.org>,
        Keith Busch <kbusch@kernel.org>,
        Sagi Grimberg <sagi@grimberg.me>,
        Chaitanya Kulkarni <kch@nvidia.com>,
        "Martin K. Petersen" <martin.petersen@oracle.com>,
        Marc Dionne <marc.dionne@auristor.com>,
        Xiubo Li <xiubli@redhat.com>, Steve French <sfrench@samba.org>,
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        Anna Schumaker <anna@kernel.org>,
        Mike Marshall <hubcap@omnibond.com>,
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Subject: Re: [PATCH 01/23] block: factor out a bvec_set_page helper
Message-ID: <20230130103619.GA11874@lst.de>
References: <20230130092157.1759539-2-hch@lst.de> <20230130092157.1759539-1-hch@lst.de> <3347557.1675074816@warthog.procyon.org.uk>
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On Mon, Jan 30, 2023 at 10:33:36AM +0000, David Howells wrote:
> Christoph Hellwig <hch@lst.de> wrote:
> 
> > +static inline void bvec_set_page(struct bio_vec *bv, struct page *page,
> > +		unsigned int len, unsigned int offset)
> 
> Could you swap len and offset around?  It reads better offset first.  You move
> offset into the page and then do something with len bytes.

This matches bio_add_page and the order inside bio_vec itself.  willy
wanted to switch it around for bio_add_folio but Jens didn't like it,
so I'll stick to the current convention in this area as well.