Ming Lei bbcbbd567c block: optimize blk_bio_segment_split for single-page bvec
Introduce a fast path for single-page bvec IO, then we can avoid
to call bvec_split_segs() unnecessarily.

Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-02-27 06:18:55 -07:00
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