14 #define DM_MSG_PREFIX "zone"
17  * For internal zone reports bypassing the top BIO submission path.
50  * User facing dm device block device report zone operation. This calls the
66 		 * Zone revalidation during __bind() is in progress, but this  in dm_blk_report_zones()
75 		/* Zone revalidation during __bind() */  in dm_blk_report_zones()
89 static int dm_report_zones_cb(struct blk_zone *zone, unsigned int idx,  in dm_report_zones_cb()  argument
98 	if (zone->start >= args->start + args->tgt->len)  in dm_report_zones_cb()
102 	 * Remap the start sector and write pointer position of the zone  in dm_report_zones_cb()
105 	zone->start += sector_diff;  in dm_report_zones_cb()
106 	if (zone->type != BLK_ZONE_TYPE_CONVENTIONAL) {  in dm_report_zones_cb()
107 		if (zone->cond == BLK_ZONE_COND_FULL)  in dm_report_zones_cb()
108 			zone->wp = zone->start + zone->len;  in dm_report_zones_cb()
109 		else if (zone->cond == BLK_ZONE_COND_EMPTY)  in dm_report_zones_cb()
110 			zone->wp = zone->start;  in dm_report_zones_cb()
112 			zone->wp += sector_diff;  in dm_report_zones_cb()
115 	args->next_sector = zone->start + zone->len;  in dm_report_zones_cb()
116 	return args->orig_cb(zone, args->zone_idx++, args->orig_data);  in dm_report_zones_cb()
128 	 * dm_report_zones_cb() can correctly remap zone information.  in dm_report_zones()
155  * for zone append emulation. Note that we cannot simply use the block layer
170 	 * Do not revalidate if zone write plug resources have already  in dm_revalidate_zones()
176 	DMINFO("%s using %s zone append", disk->disk_name,  in dm_revalidate_zones()
235 static int dm_device_count_zones_cb(struct blk_zone *zone,  in dm_device_count_zones_cb()  argument
240 	if (zone->type != BLK_ZONE_TYPE_CONVENTIONAL) {  in dm_device_count_zones_cb()
242 		if (zone->start >= zc->start &&  in dm_device_count_zones_cb()
243 		    zone->start < zc->start + zc->len)  in dm_device_count_zones_cb()
284 	 * If the target is not the whole device, the device zone resources may  in device_get_zone_resource_limits()
288 	 * sharing may happen and the zone limits will not be reliable.  in device_get_zone_resource_limits()
298 	 * any zone resource limits.  in device_get_zone_resource_limits()
349 	 * Check if zone append is natively supported, and if not, set the  in dm_set_zones_restrictions()
350 	 * mapped device queue as needing zone append emulation. If zone  in dm_set_zones_restrictions()
361 	 * Determine the max open and max active zone limits for the mapped  in dm_set_zones_restrictions()
362 	 * device by inspecting the zone resource limits and the zones mapped  in dm_set_zones_restrictions()
379 			DMERR("Could not determine %s zone resource limits",  in dm_set_zones_restrictions()
402 			DMWARN("%s: device has zone write plug resources. "  in dm_set_zones_restrictions()
403 			       "Cannot change zone size",  in dm_set_zones_restrictions()
409 			DMWARN("%s: device has zone write plug resources. "  in dm_set_zones_restrictions()
410 			       "New table must emulate zone append",  in dm_set_zones_restrictions()
417 	 * partially using zone resources of the target devices as that leads to  in dm_set_zones_restrictions()
419 	 * underlying devices, we cannot enforce zone limits to guarantee that  in dm_set_zones_restrictions()
425 		DMWARN("%s zone resource limits may be unreliable",  in dm_set_zones_restrictions()
461 	 * Get the offset within the zone of the written sector  in dm_zone_endio()
472 static int dm_zone_need_reset_cb(struct blk_zone *zone, unsigned int idx,  in dm_zone_need_reset_cb()  argument
479 	switch (zone->cond) {  in dm_zone_need_reset_cb()
500 		DMERR("Get %s zone reset bitmap failed\n",  in dm_zone_get_reset_bitmap()