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authorDamien Le Moal <damien.lemoal@wdc.com>2020-11-11 16:36:06 +0900
committerJens Axboe <axboe@kernel.dk>2020-12-07 17:34:21 -0700
commit2afdeb23e4750acb4ff16fd86f566c9074708691 (patch)
treeaff92d89b60e3c2e844d7dacc29049f216a0acf3
parent0eff1f1a38a95b20fec83d0b69409c8da967fe1e (diff)
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 <damien.lemoal@wdc.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
-rw-r--r--block/blk-zoned.c16
1 files changed, 15 insertions, 1 deletions
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);