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block: untangle the end of blk_bio_segment_split 

Now that we don't need to assign the front/back segment sizes, we can
duplicating the segs assignment for the split vs no-split case and
remove a whole chunk of boilerplate code.

Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
alistair/sunxi64-5.4-dsi
Christoph Hellwig 2019-06-06 12:29:03 +02:00 committed by Jens Axboe
parent e9cd19c0c1
commit d627065d88
1 changed files with 3 additions and 11 deletions
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14
block/blk-merge.c
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@ -202,8 +202,6 @@ static struct bio *blk_bio_segment_split(struct request_queue *q,
struct bio_vec bv, bvprv, *bvprvp = NULL;
struct bvec_iter iter;
unsigned nsegs = 0, sectors = 0;
bool do_split = true;
struct bio *new = NULL;
const unsigned max_sectors = get_max_io_size(q, bio);
const unsigned max_segs = queue_max_segments(q);
@ -245,17 +243,11 @@ static struct bio *blk_bio_segment_split(struct request_queue *q,
}
}
do_split = false;
*segs = nsegs;
return NULL;
split:
*segs = nsegs;
if (do_split) {
new = bio_split(bio, sectors, GFP_NOIO, bs);
if (new)
bio = new;
}
return do_split ? new : NULL;
return bio_split(bio, sectors, GFP_NOIO, bs);
}
void __blk_queue_split(struct request_queue *q, struct bio **bio,