drivers/md/dm-table.c

253 	 * If the target is mapped to zoned block device(s), check
268 		 * Note: The last zone of a zoned block device may be smaller
270 		 * zoned block device with such a zone, len would not be zone
1692 	bool *zoned = data;
1694 	return bdev_is_zoned(dev->bdev) != *zoned;
1704  * Check the device zoned model based on the target feature flag. If the target
1705  * has the DM_TARGET_ZONED_HM feature flag set, host-managed zoned devices are
1706  * also accepted but all devices must have the same zoned model. If the target
1708  * zoned model with all zoned devices having the same zone size.
1710 static bool dm_table_supports_zoned(struct dm_table *t, bool zoned)
1718 		 * backing device, the result must depend on checking zoned
1720 		 * if the target backing device is zoned as we get "false" when
1730 						      &zoned))
1733 			if (zoned)
1752  * Check consistency of zoned model and zone sectors across all targets. For
1753  * zone sectors, if the destination device is a zoned block device, it shall
1756 static int validate_hardware_zoned(struct dm_table *t, bool zoned,
1759 	if (!zoned)
1762 	if (!dm_table_supports_zoned(t, zoned)) {
1763 		DMERR("%s: zoned model is not consistent across all devices",
1773 		DMERR("%s: zone sectors is not consistent across all zoned devices",
1789 	bool zoned = false;
1819 		if (!zoned && (ti_limits.features & BLK_FEAT_ZONED)) {
1822 			 * in table support this zoned model and zone sectors.
1824 			zoned = (ti_limits.features & BLK_FEAT_ZONED);
1866 	 * Verify that the zoned model and zone sectors, as determined before
1869 	 *   zoned model on host-managed zoned block devices.
1874 		 * ...IF the above limits stacking determined a zoned model
1877 		zoned = limits->features & BLK_FEAT_ZONED;
1880 	if (validate_hardware_zoned(t, zoned, zone_sectors))
2084 	/* For a zoned table, setup the zone related queue attributes. */
2092 			       "Cannot switch to non-zoned table.",