553 int blk_stack_limits(struct queue_limits *t, struct queue_limits *b,  in blk_stack_limits()  argument
558 	t->max_sectors = min_not_zero(t->max_sectors, b->max_sectors);  in blk_stack_limits()
559 	t->max_hw_sectors = min_not_zero(t->max_hw_sectors, b->max_hw_sectors);  in blk_stack_limits()
560 	t->max_dev_sectors = min_not_zero(t->max_dev_sectors, b->max_dev_sectors);  in blk_stack_limits()
561 	t->max_write_zeroes_sectors = min(t->max_write_zeroes_sectors,  in blk_stack_limits()
563 	t->max_zone_append_sectors = min(t->max_zone_append_sectors,  in blk_stack_limits()
565 	t->bounce = max(t->bounce, b->bounce);  in blk_stack_limits()
567 	t->seg_boundary_mask = min_not_zero(t->seg_boundary_mask,  in blk_stack_limits()
569 	t->virt_boundary_mask = min_not_zero(t->virt_boundary_mask,  in blk_stack_limits()
572 	t->max_segments = min_not_zero(t->max_segments, b->max_segments);  in blk_stack_limits()
573 	t->max_discard_segments = min_not_zero(t->max_discard_segments,  in blk_stack_limits()
575 	t->max_integrity_segments = min_not_zero(t->max_integrity_segments,  in blk_stack_limits()
578 	t->max_segment_size = min_not_zero(t->max_segment_size,  in blk_stack_limits()
581 	t->misaligned |= b->misaligned;  in blk_stack_limits()
588 	if (t->alignment_offset != alignment) {  in blk_stack_limits()
590 		top = max(t->physical_block_size, t->io_min)  in blk_stack_limits()
591 			+ t->alignment_offset;  in blk_stack_limits()
596 			t->misaligned = 1;  in blk_stack_limits()
601 	t->logical_block_size = max(t->logical_block_size,  in blk_stack_limits()
604 	t->physical_block_size = max(t->physical_block_size,  in blk_stack_limits()
607 	t->io_min = max(t->io_min, b->io_min);  in blk_stack_limits()
608 	t->io_opt = lcm_not_zero(t->io_opt, b->io_opt);  in blk_stack_limits()
609 	t->dma_alignment = max(t->dma_alignment, b->dma_alignment);  in blk_stack_limits()
613 		t->chunk_sectors = gcd(t->chunk_sectors, b->chunk_sectors);  in blk_stack_limits()
616 	if (t->physical_block_size & (t->logical_block_size - 1)) {  in blk_stack_limits()
617 		t->physical_block_size = t->logical_block_size;  in blk_stack_limits()
618 		t->misaligned = 1;  in blk_stack_limits()
623 	if (t->io_min & (t->physical_block_size - 1)) {  in blk_stack_limits()
624 		t->io_min = t->physical_block_size;  in blk_stack_limits()
625 		t->misaligned = 1;  in blk_stack_limits()
630 	if (t->io_opt & (t->physical_block_size - 1)) {  in blk_stack_limits()
631 		t->io_opt = 0;  in blk_stack_limits()
632 		t->misaligned = 1;  in blk_stack_limits()
637 	if ((t->chunk_sectors << 9) & (t->physical_block_size - 1)) {  in blk_stack_limits()
638 		t->chunk_sectors = 0;  in blk_stack_limits()
639 		t->misaligned = 1;  in blk_stack_limits()
643 	t->raid_partial_stripes_expensive =  in blk_stack_limits()
644 		max(t->raid_partial_stripes_expensive,  in blk_stack_limits()
648 	t->alignment_offset = lcm_not_zero(t->alignment_offset, alignment)  in blk_stack_limits()
649 		% max(t->physical_block_size, t->io_min);  in blk_stack_limits()
652 	if (t->alignment_offset & (t->logical_block_size - 1)) {  in blk_stack_limits()
653 		t->misaligned = 1;  in blk_stack_limits()
657 	t->max_sectors = blk_round_down_sectors(t->max_sectors, t->logical_block_size);  in blk_stack_limits()
658 	t->max_hw_sectors = blk_round_down_sectors(t->max_hw_sectors, t->logical_block_size);  in blk_stack_limits()
659 	t->max_dev_sectors = blk_round_down_sectors(t->max_dev_sectors, t->logical_block_size);  in blk_stack_limits()
665 		if (t->discard_granularity != 0 &&  in blk_stack_limits()
666 		    t->discard_alignment != alignment) {  in blk_stack_limits()
667 			top = t->discard_granularity + t->discard_alignment;  in blk_stack_limits()
672 				t->discard_misaligned = 1;  in blk_stack_limits()
675 		t->max_discard_sectors = min_not_zero(t->max_discard_sectors,  in blk_stack_limits()
677 		t->max_hw_discard_sectors = min_not_zero(t->max_hw_discard_sectors,  in blk_stack_limits()
679 		t->discard_granularity = max(t->discard_granularity,  in blk_stack_limits()
681 		t->discard_alignment = lcm_not_zero(t->discard_alignment, alignment) %  in blk_stack_limits()
682 			t->discard_granularity;  in blk_stack_limits()
684 	t->max_secure_erase_sectors = min_not_zero(t->max_secure_erase_sectors,  in blk_stack_limits()
686 	t->zone_write_granularity = max(t->zone_write_granularity,  in blk_stack_limits()
688 	t->zoned = max(t->zoned, b->zoned);  in blk_stack_limits()
689 	if (!t->zoned) {  in blk_stack_limits()
690 		t->zone_write_granularity = 0;  in blk_stack_limits()
691 		t->max_zone_append_sectors = 0;  in blk_stack_limits()
710 	struct request_queue *t = disk->queue;  in disk_stack_limits()  local
712 	if (blk_stack_limits(&t->limits, &bdev_get_queue(bdev)->limits,  in disk_stack_limits()