block: don't handle bio based drivers in blk_revalidate_disk_zones
bio based drivers only need to update q->nr_zones. Do that manually
instead of overloading blk_revalidate_disk_zones to keep that function
simpler for the next round of changes that will rely even more on the
request based functionality.
Reviewed-by: Javier González <javier@javigon.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/block/blk-zoned.c b/block/blk-zoned.c
index 0131f9e..51d4276 100644
--- a/block/blk-zoned.c
+++ b/block/blk-zoned.c
@@ -419,8 +419,9 @@ static int blk_revalidate_zone_cb(struct blk_zone *zone, unsigned int idx,
*
* Helper function for low-level device drivers to (re) allocate and initialize
* a disk request queue zone bitmaps. This functions should normally be called
- * within the disk ->revalidate method. For BIO based queues, no zone bitmap
- * is allocated.
+ * within the disk ->revalidate method for blk-mq based drivers. For BIO based
+ * drivers only q->nr_zones needs to be updated so that the sysfs exposed value
+ * is correct.
*/
int blk_revalidate_disk_zones(struct gendisk *disk)
{
@@ -433,15 +434,8 @@ int blk_revalidate_disk_zones(struct gendisk *disk)
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.
- */
- if (!queue_is_mq(q)) {
- q->nr_zones = args.nr_zones;
- return 0;
- }
+ if (WARN_ON_ONCE(!queue_is_mq(q)))
+ return -EIO;
/*
* Ensure that all memory allocations in this context are done as
