Introduce the internal function blk_queue_clear_zone_settings() to
cleanup all limits and resources related to zoned block devices. This
new function is called from blk_queue_set_zoned() when a disk zoned
model is set to BLK_ZONED_NONE. This particular case can happens when a
partition is created on a host-aware scsi disk.
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@edc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
*/
blk_queue_zone_write_granularity(q,
queue_logical_block_size(q));
+ } else {
+ blk_queue_clear_zone_settings(q);
}
}
EXPORT_SYMBOL_GPL(blk_queue_set_zoned);
return ret;
}
EXPORT_SYMBOL_GPL(blk_revalidate_disk_zones);
+
+void blk_queue_clear_zone_settings(struct request_queue *q)
+{
+ blk_mq_freeze_queue(q);
+
+ blk_queue_free_zone_bitmaps(q);
+ blk_queue_flag_clear(QUEUE_FLAG_ZONE_RESETALL, q);
+ q->required_elevator_features &= ~ELEVATOR_F_ZBD_SEQ_WRITE;
+ q->nr_zones = 0;
+ q->max_open_zones = 0;
+ q->max_active_zones = 0;
+ q->limits.chunk_sectors = 0;
+ q->limits.zone_write_granularity = 0;
+ q->limits.max_zone_append_sectors = 0;
+
+ blk_mq_unfreeze_queue(q);
+}
#ifdef CONFIG_BLK_DEV_ZONED
void blk_queue_free_zone_bitmaps(struct request_queue *q);
+void blk_queue_clear_zone_settings(struct request_queue *q);
#else
static inline void blk_queue_free_zone_bitmaps(struct request_queue *q) {}
+static inline void blk_queue_clear_zone_settings(struct request_queue *q) {}
#endif
int blk_alloc_devt(struct block_device *part, dev_t *devt);