linux-kernel - [PATCH 15/20] block: remove the nr_sectors variable in generic_make_request

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Date:   Mon, 29 Jun 2020 21:39:42 +0200
From:   Christoph Hellwig <hch@....de>
To:     Jens Axboe <axboe@...nel.dk>
Cc:     dm-devel@...hat.com, linux-kernel@...r.kernel.org,
        linux-m68k@...ts.linux-m68k.org, linux-xtensa@...ux-xtensa.org,
        drbd-dev@...ts.linbit.com, linuxppc-dev@...ts.ozlabs.org,
        linux-bcache@...r.kernel.org, linux-raid@...r.kernel.org,
        linux-nvdimm@...ts.01.org, linux-nvme@...ts.infradead.org,
        linux-s390@...r.kernel.org
Subject: [PATCH 15/20] block: remove the nr_sectors variable in generic_make_request_checks

The variable is only used once, so just open code the bio_sector()
there.

Signed-off-by: Christoph Hellwig <hch@....de>
---
 block/blk-core.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/block/blk-core.c b/block/blk-core.c
index 37435d0d433564..28f60985dc75cc 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -974,7 +974,6 @@ static noinline_for_stack bool
 generic_make_request_checks(struct bio *bio)
 {
 	struct request_queue *q = bio->bi_disk->queue;
-	int nr_sectors = bio_sectors(bio);
 	blk_status_t status = BLK_STS_IOERR;
 
 	might_sleep();
@@ -1007,7 +1006,7 @@ generic_make_request_checks(struct bio *bio)
 	if (op_is_flush(bio->bi_opf) &&
 	    !test_bit(QUEUE_FLAG_WC, &q->queue_flags)) {
 		bio->bi_opf &= ~(REQ_PREFLUSH | REQ_FUA);
-		if (!nr_sectors) {
+		if (!bio_sectors(bio)) {
 			status = BLK_STS_OK;
 			goto end_io;
 		}
-- 
2.26.2