336  * Flags automatically inherited when stacking limits.
379 	/* atomic write limits */
488 	struct queue_limits	limits;  member
618 #define blk_queue_nonrot(q)	(!((q)->limits.features & BLK_FEAT_ROTATIONAL))
619 #define blk_queue_io_stat(q)	((q)->limits.features & BLK_FEAT_IO_STAT)
620 #define blk_queue_dax(q)	((q)->limits.features & BLK_FEAT_DAX)
621 #define blk_queue_pci_p2pdma(q)	((q)->limits.features & BLK_FEAT_PCI_P2PDMA)
637 	((q)->limits.features & BLK_FEAT_SKIP_TAGSET_QUIESCE)
668 		(q->limits.features & BLK_FEAT_ZONED);  in blk_queue_is_zoned()
692 	return sector >> ilog2(disk->queue->limits.chunk_sectors);  in disk_zone_no()
702 	return bdev->bd_disk->queue->limits.max_open_zones;  in bdev_max_open_zones()
707 	return bdev->bd_disk->queue->limits.max_active_zones;  in bdev_max_active_zones()
811  * @lim: queue limits to be used for this disk.
912  * queue_limits_start_update - start an atomic update of queue limits
915  * This functions starts an atomic update of the queue limits.  It takes a lock
916  * to prevent other updates and returns a snapshot of the current limits that
927 	return q->limits;  in queue_limits_start_update()
934  * queue_limits_cancel_update - cancel an atomic update of queue limits
937  * This functions cancels an atomic update of the queue limits started by
955 	q->limits.max_discard_sectors = 0;  in blk_queue_disable_discard()
960 	q->limits.max_secure_erase_sectors = 0;  in blk_queue_disable_secure_erase()
965 	q->limits.max_write_zeroes_sectors = 0;  in blk_queue_disable_write_zeroes()
1144  * controlled by the driver, usually based on hardware limits.
1150 	return q->limits.seg_boundary_mask;  in queue_segment_boundary()
1155 	return q->limits.virt_boundary_mask;  in queue_virt_boundary()
1160 	return q->limits.max_sectors;  in queue_max_sectors()
1170 	return q->limits.max_hw_sectors;  in queue_max_hw_sectors()
1175 	return q->limits.max_segments;  in queue_max_segments()
1180 	return q->limits.max_discard_segments;  in queue_max_discard_segments()
1185 	return q->limits.max_segment_size;  in queue_max_segment_size()
1201 	return queue_limits_max_zone_append_sectors(&q->limits);  in queue_max_zone_append_sectors()
1206 	return blk_queue_is_zoned(q) && !q->limits.max_zone_append_sectors;  in queue_emulates_zone_append()
1227 	return q->limits.logical_block_size;  in queue_logical_block_size()
1237 	return q->limits.physical_block_size;  in queue_physical_block_size()
1247 	return q->limits.io_min;  in queue_io_min()
1257 	return q->limits.io_opt;  in queue_io_opt()
1268 	return q->limits.zone_write_granularity;  in queue_zone_write_granularity()
1282 	return bdev_get_queue(bdev)->limits.max_discard_sectors;  in bdev_max_discard_sectors()
1287 	return bdev_get_queue(bdev)->limits.discard_granularity;  in bdev_discard_granularity()
1293 	return bdev_get_queue(bdev)->limits.max_secure_erase_sectors;  in bdev_max_secure_erase_sectors()
1298 	return bdev_get_queue(bdev)->limits.max_write_zeroes_sectors;  in bdev_write_zeroes_sectors()
1308 	return bdev->bd_disk->queue->limits.features & BLK_FEAT_SYNCHRONOUS;  in bdev_synchronous()
1316 	    q->limits.integrity.csum_type != BLK_INTEGRITY_CSUM_NONE)  in bdev_stable_writes()
1318 	return q->limits.features & BLK_FEAT_STABLE_WRITES;  in bdev_stable_writes()
1323 	return (q->limits.features & BLK_FEAT_WRITE_CACHE) &&  in blk_queue_write_cache()
1324 		!(q->limits.flags & BLK_FLAG_WRITE_CACHE_DISABLED);  in blk_queue_write_cache()
1334 	return bdev_get_queue(bdev)->limits.features & BLK_FEAT_FUA;  in bdev_fua()
1339 	return bdev->bd_disk->queue->limits.features & BLK_FEAT_NOWAIT;  in bdev_nowait()
1358 	return q->limits.chunk_sectors;  in bdev_zone_sectors()
1381 	return q->limits.dma_alignment;  in queue_dma_alignment()
1387 	return q->limits.atomic_write_unit_max;  in queue_atomic_write_unit_max_bytes()
1393 	return q->limits.atomic_write_unit_min;  in queue_atomic_write_unit_min_bytes()
1399 	return q->limits.atomic_write_boundary_sectors << SECTOR_SHIFT;  in queue_atomic_write_boundary_bytes()
1405 	return q->limits.atomic_write_max_sectors << SECTOR_SHIFT;  in queue_atomic_write_max_bytes()
1428 	unsigned int alignment = blk_lim_dma_alignment_and_pad(&q->limits);  in blk_rq_aligned()
1659 	struct queue_limits *limits = &bd_queue->limits;  in bdev_can_atomic_write()  local
1661 	if (!limits->atomic_write_unit_min)  in bdev_can_atomic_write()
1667 			max(limits->atomic_write_unit_min,  in bdev_can_atomic_write()
1668 			    limits->atomic_write_hw_boundary);  in bdev_can_atomic_write()