From 2afdeb23e4750acb4ff16fd86f566c9074708691 Mon Sep 17 00:00:00 2001 From: Damien Le Moal Date: Wed, 11 Nov 2020 16:36:06 +0900 Subject: block: Improve blk_revalidate_disk_zones() checks Improves the checks on the zones of a zoned block device done in blk_revalidate_disk_zones() by making sure that the device report_zones method did report at least one zone and that the zones reported exactly cover the entire disk capacity, that is, that there are no missing zones at the end of the disk sector range. Signed-off-by: Damien Le Moal Reviewed-by: Christoph Hellwig Signed-off-by: Jens Axboe --- block/blk-zoned.c | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-) (limited to 'block') diff --git a/block/blk-zoned.c b/block/blk-zoned.c index 6817a673e5ce..7a68b6e4300c 100644 --- a/block/blk-zoned.c +++ b/block/blk-zoned.c @@ -508,15 +508,29 @@ int blk_revalidate_disk_zones(struct gendisk *disk, noio_flag = memalloc_noio_save(); ret = disk->fops->report_zones(disk, 0, UINT_MAX, blk_revalidate_zone_cb, &args); + if (!ret) { + pr_warn("%s: No zones reported\n", disk->disk_name); + ret = -ENODEV; + } memalloc_noio_restore(noio_flag); + /* + * If zones where reported, make sure that the entire disk capacity + * has been checked. + */ + if (ret > 0 && args.sector != get_capacity(disk)) { + pr_warn("%s: Missing zones from sector %llu\n", + disk->disk_name, args.sector); + ret = -ENODEV; + } + /* * Install the new bitmaps and update nr_zones only once the queue is * stopped and all I/Os are completed (i.e. a scheduler is not * referencing the bitmaps). */ blk_mq_freeze_queue(q); - if (ret >= 0) { + if (ret > 0) { blk_queue_chunk_sectors(q, args.zone_sectors); q->nr_zones = args.nr_zones; swap(q->seq_zones_wlock, args.seq_zones_wlock); -- cgit v1.2.3