[PATCH v3 5/9] block: mq-deadline: Simplify deadline_skip_seq_writes()

[Bart Van Assche <bvanassche@acm.org>]

Make the deadline_skip_seq_writes() code shorter without changing its
functionality.

Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
---
 block/mq-deadline.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/block/mq-deadline.c b/block/mq-deadline.c
index a016cafa54b3..6276afede9cd 100644
--- a/block/mq-deadline.c
+++ b/block/mq-deadline.c
@@ -304,14 +304,11 @@ static struct request *deadline_skip_seq_writes(struct deadline_data *dd,
 						struct request *rq)
 {
 	sector_t pos = blk_rq_pos(rq);
-	sector_t skipped_sectors = 0;
 
-	while (rq) {
-		if (blk_rq_pos(rq) != pos + skipped_sectors)
-			break;
-		skipped_sectors += blk_rq_sectors(rq);
+	do {
+		pos += blk_rq_sectors(rq);
 		rq = deadline_latter_request(rq);
-	}
+	} while (rq && blk_rq_pos(rq) == pos);
 
 	return rq;
 }