linux-kernel - [PATCH v2 10/14] block: blk-integrity: change how to find the number of integrity of bio

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Message-ID: <20230510085820epcms2p899d5cfca9a0aca4bd6654d9d0189b6f8@epcms2p8>
Date:   Wed, 10 May 2023 17:58:20 +0900
From:   Jinyoung CHOI <j-young.choi@...sung.com>
To:     Jinyoung CHOI <j-young.choi@...sung.com>,
        "axboe@...nel.dk" <axboe@...nel.dk>,
        "kbusch@...nel.org" <kbusch@...nel.org>, "hch@....de" <hch@....de>,
        "sagi@...mberg.me" <sagi@...mberg.me>,
        "jejb@...ux.ibm.com" <jejb@...ux.ibm.com>,
        "martin.petersen@...cle.com" <martin.petersen@...cle.com>,
        "johannes.thumshirn@....com" <johannes.thumshirn@....com>,
        "kch@...dia.com" <kch@...dia.com>,
        "willy@...radead.org" <willy@...radead.org>,
        "linux-block@...r.kernel.org" <linux-block@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: [PATCH v2 10/14] block: blk-integrity: change how to find the
 number of integrity of bio

The method of constructing a bip has been changed, the number of
segments can be obtained through bip_vcnt.

Cc: Christoph Hellwig <hch@....de>
Cc: Martin K. Petersen <martin.petersen@...cle.com>

Signed-off-by: Jinyoung Choi <j-young.choi@...sung.com>
---
 block/blk-integrity.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/block/blk-integrity.c b/block/blk-integrity.c
index f97b7e8a6d4d..64407b412947 100644
--- a/block/blk-integrity.c
+++ b/block/blk-integrity.c
@@ -217,7 +217,6 @@ bool blk_integrity_merge_bio(struct request_queue *q, struct request *req,
 			     struct bio *bio)
 {
 	int nr_integrity_segs;
-	struct bio *next = bio->bi_next;
 
 	if (blk_integrity_bypass_check(req, bio))
 		return true;
@@ -225,9 +224,7 @@ bool blk_integrity_merge_bio(struct request_queue *q, struct request *req,
 	if (!__blk_integrity_mergeable(q, req, bio))
 		return false;
 
-	bio->bi_next = NULL;
-	nr_integrity_segs = blk_rq_count_integrity_sg(q, bio);
-	bio->bi_next = next;
+	nr_integrity_segs = bio_integrity(bio)->bip_vcnt;
 
 	if (req->nr_integrity_segments + nr_integrity_segs >
 	    q->limits.max_integrity_segments)
-- 
2.34.1