linux-kernel - Re: [PATCH v1 01/14] block: introduce bio_segments

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Message-ID: <20170225182216.GB26447@infradead.org>
Date:   Sat, 25 Feb 2017 10:22:16 -0800
From:   Christoph Hellwig <hch@...radead.org>
To:     Ming Lei <tom.leiming@...il.com>
Cc:     Shaohua Li <shli@...nel.org>, Jens Axboe <axboe@...com>,
        linux-kernel@...r.kernel.org, linux-raid@...r.kernel.org,
        linux-block@...r.kernel.org, Christoph Hellwig <hch@...radead.org>
Subject: Re: [PATCH v1 01/14] block: introduce bio_segments_all()

> +static inline unsigned bio_segments_all(struct bio *bio)
> +{
> +	WARN_ON_ONCE(bio_flagged(bio, BIO_CLONED));
> +
> +	return bio->bi_vcnt;
> +}

I don't think this helpers really adds any benefit.