linux-kernel - [PATCH 03/16] block: add bdev_zone

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Message-Id: <20220427160255.300418-4-p.raghav@samsung.com>
Date:   Wed, 27 Apr 2022 18:02:42 +0200
From:   Pankaj Raghav <p.raghav@...sung.com>
To:     jaegeuk@...nel.org, axboe@...nel.dk, snitzer@...nel.org,
        hch@....de, mcgrof@...nel.org, naohiro.aota@....com,
        sagi@...mberg.me, damien.lemoal@...nsource.wdc.com,
        dsterba@...e.com, johannes.thumshirn@....com
Cc:     linux-kernel@...r.kernel.org, linux-btrfs@...r.kernel.org,
        clm@...com, gost.dev@...sung.com, chao@...nel.org,
        linux-f2fs-devel@...ts.sourceforge.net, josef@...icpanda.com,
        jonathan.derrick@...ux.dev, agk@...hat.com, kbusch@...nel.org,
        kch@...dia.com, linux-nvme@...ts.infradead.org,
        dm-devel@...hat.com, bvanassche@....org, jiangbo.365@...edance.com,
        linux-fsdevel@...r.kernel.org, matias.bjorling@....com,
        linux-block@...r.kernel.org, Pankaj Raghav <p.raghav@...sung.com>
Subject: [PATCH 03/16] block: add bdev_zone_no helper

Many places in the filesystem for zoned devices open code this function
to find the zone number for a given sector with power of 2 assumption.
This generic helper can be used to calculate zone number for a given
sector in a block device

This helper internally uses blk_queue_zone_no to find the zone number.

Reviewed-by: Luis Chamberlain <mcgrof@...nel.org>
Signed-off-by: Pankaj Raghav <p.raghav@...sung.com>
---
 include/linux/blkdev.h | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index f8f2d2998afb..55293e0a8702 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -1392,6 +1392,15 @@ static inline bool bdev_zone_aligned(struct block_device *bdev, sector_t sec)
 	return false;
 }
 
+static inline unsigned int bdev_zone_no(struct block_device *bdev, sector_t sec)
+{
+	struct request_queue *q = bdev_get_queue(bdev);
+
+	if (q)
+		return blk_queue_zone_no(q, sec);
+	return 0;
+}
+
 static inline unsigned int bdev_max_open_zones(struct block_device *bdev)
 {
 	struct request_queue *q = bdev_get_queue(bdev);
-- 
2.25.1