Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
From:   Pankaj Raghav <p.raghav@samsung.com>
To:     axboe@kernel.dk
Cc:     kernel@pankajraghav.com, linux-kernel@vger.kernel.org,
        hare@suse.de, bvanassche@acm.org, snitzer@kernel.org,
        dm-devel@redhat.com, damien.lemoal@opensource.wdc.com,
        linux-nvme@lists.infradead.org, hch@lst.de,
        linux-block@vger.kernel.org, gost.dev@samsung.com,
        Pankaj Raghav <p.raghav@samsung.com>,
        Luis Chamberlain <mcgrof@kernel.org>,
        Johannes Thumshirn <johannes.thumshirn@wdc.com>
Subject: [PATCH 6/7] dm-zone: use generic helpers to calculate offset from
 zone start
Date:   Fri,  6 Jan 2023 09:33:16 +0100
Message-Id: <20230106083317.93938-7-p.raghav@samsung.com>
In-Reply-To: <20230106083317.93938-1-p.raghav@samsung.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Content-Type: text/plain; charset="utf-8"
CMS-TYPE: 201P
References: <20230106083317.93938-1-p.raghav@samsung.com>
        <CGME20230106083322eucas1p1ce3ca7b02ca87bb2be8543291e223338@eucas1p1.samsung.com>
Precedence: bulk

Use the bdev_offset_from_zone_start() helper function to calculate
the offset from zone start instead of open coding.

Signed-off-by: Pankaj Raghav <p.raghav@samsung.com>
Reviewed-by: Luis Chamberlain <mcgrof@kernel.org>
Reviewed-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Mike Snitzer <snitzer@kernel.org>
---
 drivers/md/dm-zone.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/md/dm-zone.c b/drivers/md/dm-zone.c
index 3dafc0e8b7a9..ac6fc1293d41 100644
--- a/drivers/md/dm-zone.c
+++ b/drivers/md/dm-zone.c
@@ -390,7 +390,8 @@ static bool dm_zone_map_bio_begin(struct mapped_device *md,
 	case REQ_OP_WRITE_ZEROES:
 	case REQ_OP_WRITE:
 		/* Writes must be aligned to the zone write pointer */
-		if ((clone->bi_iter.bi_sector & (zsectors - 1)) != zwp_offset)
+		if (bdev_offset_from_zone_start(md->disk->part0,
+						clone->bi_iter.bi_sector) != zwp_offset)
 			return false;
 		break;
 	case REQ_OP_ZONE_APPEND:
@@ -602,11 +603,8 @@ void dm_zone_endio(struct dm_io *io, struct bio *clone)
 		 */
 		if (clone->bi_status == BLK_STS_OK &&
 		    bio_op(clone) == REQ_OP_ZONE_APPEND) {
-			sector_t mask =
-				(sector_t)bdev_zone_sectors(disk->part0) - 1;
-
 			orig_bio->bi_iter.bi_sector +=
-				clone->bi_iter.bi_sector & mask;
+				bdev_offset_from_zone_start(disk->part0, clone->bi_iter.bi_sector);
 		}
 
 		return;
-- 
2.25.1