linux-kernel - Re: [PATCH v3 11/49] btrfs: avoid access to .bi

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Date:   Fri, 20 Oct 2017 06:57:44 +0800
From:   Ming Lei <ming.lei@...hat.com>
To:     Christoph Hellwig <hch@...radead.org>
Cc:     Jens Axboe <axboe@...com>, Huang Ying <ying.huang@...el.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Alexander Viro <viro@...iv.linux.org.uk>,
        linux-kernel@...r.kernel.org, linux-block@...r.kernel.org,
        linux-fsdevel@...r.kernel.org, linux-mm@...ck.org,
        Chris Mason <clm@...com>, Josef Bacik <jbacik@...com>,
        David Sterba <dsterba@...e.com>, linux-btrfs@...r.kernel.org
Subject: Re: [PATCH v3 11/49] btrfs: avoid access to .bi_vcnt directly

On Thu, Aug 10, 2017 at 04:29:59AM -0700, Christoph Hellwig wrote:
> > +static unsigned int get_bio_pages(struct bio *bio)
> > +{
> > +	unsigned i;
> > +	struct bio_vec *bv;
> > +
> > +	bio_for_each_segment_all(bv, bio, i)
> > +		;
> > +
> > +	return i;
> > +}
> 
> s/get_bio_pages/bio_nr_pages/ ?

Yeah, the name of bio_nr_pages() is much better.

> 
> Also this seems like a useful helper for bio.h

OK.


-- 
Ming