Damien, > For host-aware ZBC disk, setting the device zoned model to > BLK_ZONED_HA using blk_queue_set_zoned() in > sd_read_block_characteristics() may result in the block device > effective zoned model to be "none" (BLK_ZONED_NONE) if partitions are > present on the device. In this case, sd_zbc_read_zones() should not > setup the zone related queue limits for the disk so that the device > limits and configuration is consistent with a regular disk and > resources not uselessly allocated (e.g. the zone write pointer > tracking array for zone append emulation). > > Furthermore, if the disk zoned model changes at run time due to the > creation of a partition by the user, the zone related resources can be > released. > > Fix both problems by introducing the function sd_zbc_clear_zone_info() > to reset the scsi disk zone information and free resources and by > returning early in sd_zbc_read_zones() for a block device that has a > zoned model equal to BLK_ZONED_NONE. Reviewed-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx> -- Martin K. Petersen Oracle Linux Engineering
