On Sun, Feb 26, 2017 at 2:22 AM, Christoph Hellwig <hch@xxxxxxxxxxxxx> wrote:
>> +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.
IMO the first benefit is that misusing of .bi_vcnt can be warned, and
another one is that we have to introduce this helper if multipage bvec
is supported.
Thanks,
Ming Lei
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