nvme: suspend i/o during runtime blk_integrity_unregister
Synchronize pending i/o against a change in the integrity profile to avoid the possibility of spurious integrity errors. Cc: Matthew Wilcox <willy@linux.intel.com> Acked-by: Keith Busch <keith.busch@intel.com> [keith: also protect dynamic integrity registration] Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Jens Axboe <axboe@fb.com>
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@ -2035,6 +2035,7 @@ static int nvme_revalidate_disk(struct gendisk *disk)
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pi_type = ns->ms == sizeof(struct t10_pi_tuple) ?
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id->dps & NVME_NS_DPS_PI_MASK : 0;
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blk_mq_freeze_queue(disk->queue);
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if (blk_get_integrity(disk) && (ns->pi_type != pi_type ||
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ns->ms != old_ms ||
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bs != queue_logical_block_size(disk->queue) ||
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@ -2054,6 +2055,7 @@ static int nvme_revalidate_disk(struct gendisk *disk)
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if (dev->oncs & NVME_CTRL_ONCS_DSM)
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nvme_config_discard(ns);
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blk_mq_unfreeze_queue(disk->queue);
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kfree(id);
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return 0;
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