On 11/8/19 2:56 AM, Damien Le Moal wrote:
> From: Christoph Hellwig <hch@xxxxxx>
>
> 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@xxxxxx>
> Signed-off-by: Damien Le Moal <damien.lemoal@xxxxxxx>
> ---
> 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;
>
Reviewed-by: Hannes Reinecke <hare@xxxxxxx>
Cheers,
Hannes
--
Dr. Hannes Reinecke Teamlead Storage & Networking
hare@xxxxxxx +49 911 74053 688
SUSE Software Solutions Germany GmbH, Maxfeldstr. 5, 90409 Nürnberg
HRB 247165 (AG München), GF: Felix Imendörffer
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