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From: Damien Le Moal <damien.lemoal@wdc.com>
To: linux-block@vger.kernel.org, Jens Axboe <axboe@kernel.dk>,
	linux-scsi@vger.kernel.org,
	"Martin K . Petersen" <martin.petersen@oracle.com>,
	dm-devel@redhat.com, Mike Snitzer <snitzer@redhat.com>,
	linux-f2fs-devel@lists.sourceforge.net,
	Jaegeuk Kim <jaegeuk@kernel.org>, Chao Yu <yuchao0@huawei.com>
Subject: [PATCH v2 2/9] block: cleanup the !zoned case in blk_revalidate_disk_zones
Date: Mon, 11 Nov 2019 11:39:23 +0900
Message-ID: <20191111023930.638129-3-damien.lemoal@wdc.com> (raw)
In-Reply-To: <20191111023930.638129-1-damien.lemoal@wdc.com>

From: Christoph Hellwig <hch@lst.de>

blk_revalidate_disk_zones is never called for non-zoned devices.  Just
return early and warn instead of trying to handle this case.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
---
 block/blk-zoned.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/block/blk-zoned.c b/block/blk-zoned.c
index dae787f67019..523a28d7a15c 100644
--- a/block/blk-zoned.c
+++ b/block/blk-zoned.c
@@ -520,6 +520,9 @@ int blk_revalidate_disk_zones(struct gendisk *disk)
 	sector_t sector = 0;
 	int ret = 0;
 
+	if (WARN_ON_ONCE(!blk_queue_is_zoned(q)))
+		return -EIO;
+
 	/*
 	 * BIO based queues do not use a scheduler so only q->nr_zones
 	 * needs to be updated so that the sysfs exposed value is correct.
@@ -535,10 +538,8 @@ int blk_revalidate_disk_zones(struct gendisk *disk)
 	 */
 	noio_flag = memalloc_noio_save();
 
-	if (!blk_queue_is_zoned(q) || !nr_zones) {
-		nr_zones = 0;
+	if (!nr_zones)
 		goto update;
-	}
 
 	/* Allocate bitmaps */
 	ret = -ENOMEM;
-- 
2.23.0


  parent reply index

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-11  2:39 [PATCH v2 0/9] Zoned block device enhancements and zone report rework Damien Le Moal
2019-11-11  2:39 ` [PATCH v2 1/9] block: Enhance blk_revalidate_disk_zones() Damien Le Moal
2019-11-11  2:39 ` Damien Le Moal [this message]
2019-11-11  2:39 ` [PATCH v2 3/9] block: Simplify report zones execution Damien Le Moal
2019-11-11  2:39 ` [PATCH v2 4/9] block: Remove partition support for zoned block devices Damien Le Moal
2019-11-11  6:55   ` Hannes Reinecke
2019-11-11  2:39 ` [PATCH v2 5/9] null_blk: clean up the block device operations Damien Le Moal
2019-11-11  2:39 ` [PATCH v2 6/9] null_blk: clean up report zones Damien Le Moal
2019-11-11  2:39 ` [PATCH v2 7/9] null_blk: Add zone_nr_conv to features Damien Le Moal
2019-11-11  2:39 ` [PATCH v2 8/9] scsi: sd_zbc: Cleanup sd_zbc_alloc_report_buffer() Damien Le Moal
2019-11-11  6:56   ` Hannes Reinecke
2019-11-11 10:22   ` Christoph Hellwig
2019-11-13  1:46   ` Martin K. Petersen
2019-11-11  2:39 ` [PATCH v2 9/9] block: rework zone reporting Damien Le Moal
2019-11-13  2:16 ` [PATCH v2 0/9] Zoned block device enhancements and zone report rework Jens Axboe
2019-11-13  2:40   ` Damien Le Moal
2019-11-13  7:06   ` Christoph Hellwig

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