491 void blk_queue_stack_limits(struct request_queue *t, struct request_queue *b)  in blk_queue_stack_limits()  argument
493 	blk_stack_limits(&t->limits, &b->limits, 0);  in blk_queue_stack_limits()
518 int blk_stack_limits(struct queue_limits *t, struct queue_limits *b,  in blk_stack_limits()  argument
523 	t->max_sectors = min_not_zero(t->max_sectors, b->max_sectors);  in blk_stack_limits()
524 	t->max_hw_sectors = min_not_zero(t->max_hw_sectors, b->max_hw_sectors);  in blk_stack_limits()
525 	t->max_dev_sectors = min_not_zero(t->max_dev_sectors, b->max_dev_sectors);  in blk_stack_limits()
527 					b->max_write_same_sectors);  in blk_stack_limits()
528 	t->bounce_pfn = min_not_zero(t->bounce_pfn, b->bounce_pfn);  in blk_stack_limits()
531 					    b->seg_boundary_mask);  in blk_stack_limits()
533 					    b->virt_boundary_mask);  in blk_stack_limits()
535 	t->max_segments = min_not_zero(t->max_segments, b->max_segments);  in blk_stack_limits()
537 						 b->max_integrity_segments);  in blk_stack_limits()
540 					   b->max_segment_size);  in blk_stack_limits()
542 	t->misaligned |= b->misaligned;  in blk_stack_limits()
544 	alignment = queue_limit_alignment_offset(b, start);  in blk_stack_limits()
553 		bottom = max(b->physical_block_size, b->io_min) + alignment;  in blk_stack_limits()
563 				    b->logical_block_size);  in blk_stack_limits()
566 				     b->physical_block_size);  in blk_stack_limits()
568 	t->io_min = max(t->io_min, b->io_min);  in blk_stack_limits()
569 	t->io_opt = lcm_not_zero(t->io_opt, b->io_opt);  in blk_stack_limits()
571 	t->cluster &= b->cluster;  in blk_stack_limits()
572 	t->discard_zeroes_data &= b->discard_zeroes_data;  in blk_stack_limits()
597 		    b->raid_partial_stripes_expensive);  in blk_stack_limits()
610 	if (b->discard_granularity) {  in blk_stack_limits()
611 		alignment = queue_limit_discard_alignment(b, start);  in blk_stack_limits()
616 			bottom = b->discard_granularity + alignment;  in blk_stack_limits()
624 						      b->max_discard_sectors);  in blk_stack_limits()
626 							 b->max_hw_discard_sectors);  in blk_stack_limits()
628 					     b->discard_granularity);  in blk_stack_limits()