lightnvm: pblk: use rqd->end_io for completion

For consistency with the rest of pblk, use rqd->end_io to point to the
function taking care of ending the request on the completion path.

Signed-off-by: Javier González <javier@cnexlabs.com>
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

drivers/lightnvm/pblk-core.c

@@ -261,13 +261,6 @@ void pblk_write_should_kick(struct pblk *pblk)
 		pblk_write_kick(pblk);
 }
 
-void pblk_end_bio_sync(struct bio *bio)
-{
-	struct completion *waiting = bio->bi_private;
-
-	complete(waiting);
-}
-
 void pblk_end_io_sync(struct nvm_rq *rqd)
 {
 	struct completion *waiting = rqd->private;

drivers/lightnvm/pblk-read.c

@@ -170,13 +170,12 @@ static int pblk_fill_partial_read_bio(struct pblk *pblk, struct nvm_rq *rqd,
 
 	new_bio->bi_iter.bi_sector = 0; /* internal bio */
 	bio_set_op_attrs(new_bio, REQ_OP_READ, 0);
-	new_bio->bi_private = &wait;
-	new_bio->bi_end_io = pblk_end_bio_sync;
 
 	rqd->bio = new_bio;
 	rqd->nr_ppas = nr_holes;
 	rqd->flags = pblk_set_read_mode(pblk, PBLK_READ_RANDOM);
-	rqd->end_io = NULL;
+	rqd->end_io = pblk_end_io_sync;
+	rqd->private = &wait;
 
 	if (unlikely(nr_secs > 1 && nr_holes == 1)) {
 		ppa_ptr = rqd->ppa_list;