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    Subject[PATCH v1 32/54] block: introduce bvec_get_last_sp()
    Date
    BTRFS need to get the last singlepage bvec, so introduce
    this helper to make it happy.

    Signed-off-by: Ming Lei <tom.leiming@gmail.com>
    ---
    include/linux/bvec.h | 10 ++++++++++
    1 file changed, 10 insertions(+)

    diff --git a/include/linux/bvec.h b/include/linux/bvec.h
    index baf379d56106..e9a623067c52 100644
    --- a/include/linux/bvec.h
    +++ b/include/linux/bvec.h
    @@ -206,4 +206,14 @@ static inline void bvec_iter_advance_mp(const struct bio_vec *bv,
    #define bvec_for_each_sp_bvec(sp_bvl, mp_bvec, iter) \
    __bvec_for_each_sp_bvec(sp_bvl, mp_bvec, iter, BVEC_ITER_ALL_INIT)

    +/* get the last singlepage bvec from the multipage bvec */
    +static inline void bvec_get_last_sp(struct bio_vec *mp_bv,
    + struct bio_vec *sp_bv)
    +{
    + struct bvec_iter iter;
    +
    + bvec_for_each_sp_bvec(*sp_bv, mp_bv, iter)
    + ;
    +}
    +
    #endif /* __LINUX_BVEC_ITER_H */
    --
    2.7.4
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