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()
526 	t->max_write_same_sectors = min(t->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()
530 	t->seg_boundary_mask = min_not_zero(t->seg_boundary_mask,  in blk_stack_limits()
532 	t->virt_boundary_mask = min_not_zero(t->virt_boundary_mask,  in blk_stack_limits()
535 	t->max_segments = min_not_zero(t->max_segments, b->max_segments);  in blk_stack_limits()
536 	t->max_integrity_segments = min_not_zero(t->max_integrity_segments,  in blk_stack_limits()
539 	t->max_segment_size = min_not_zero(t->max_segment_size,  in blk_stack_limits()
542 	t->misaligned |= b->misaligned;  in blk_stack_limits()
549 	if (t->alignment_offset != alignment) {  in blk_stack_limits()
551 		top = max(t->physical_block_size, t->io_min)  in blk_stack_limits()
552 			+ t->alignment_offset;  in blk_stack_limits()
557 			t->misaligned = 1;  in blk_stack_limits()
562 	t->logical_block_size = max(t->logical_block_size,  in blk_stack_limits()
565 	t->physical_block_size = max(t->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()
575 	if (t->physical_block_size & (t->logical_block_size - 1)) {  in blk_stack_limits()
576 		t->physical_block_size = t->logical_block_size;  in blk_stack_limits()
577 		t->misaligned = 1;  in blk_stack_limits()
582 	if (t->io_min & (t->physical_block_size - 1)) {  in blk_stack_limits()
583 		t->io_min = t->physical_block_size;  in blk_stack_limits()
584 		t->misaligned = 1;  in blk_stack_limits()
589 	if (t->io_opt & (t->physical_block_size - 1)) {  in blk_stack_limits()
590 		t->io_opt = 0;  in blk_stack_limits()
591 		t->misaligned = 1;  in blk_stack_limits()
595 	t->raid_partial_stripes_expensive =  in blk_stack_limits()
596 		max(t->raid_partial_stripes_expensive,  in blk_stack_limits()
600 	t->alignment_offset = lcm_not_zero(t->alignment_offset, alignment)  in blk_stack_limits()
601 		% max(t->physical_block_size, t->io_min);  in blk_stack_limits()
604 	if (t->alignment_offset & (t->logical_block_size - 1)) {  in blk_stack_limits()
605 		t->misaligned = 1;  in blk_stack_limits()
613 		if (t->discard_granularity != 0 &&  in blk_stack_limits()
614 		    t->discard_alignment != alignment) {  in blk_stack_limits()
615 			top = t->discard_granularity + t->discard_alignment;  in blk_stack_limits()
620 				t->discard_misaligned = 1;  in blk_stack_limits()
623 		t->max_discard_sectors = min_not_zero(t->max_discard_sectors,  in blk_stack_limits()
625 		t->max_hw_discard_sectors = min_not_zero(t->max_hw_discard_sectors,  in blk_stack_limits()
627 		t->discard_granularity = max(t->discard_granularity,  in blk_stack_limits()
629 		t->discard_alignment = lcm_not_zero(t->discard_alignment, alignment) %  in blk_stack_limits()
630 			t->discard_granularity;  in blk_stack_limits()
648 int bdev_stack_limits(struct queue_limits *t, struct block_device *bdev,  in bdev_stack_limits()  argument
655 	return blk_stack_limits(t, &bq->limits, start);  in bdev_stack_limits()
672 	struct request_queue *t = disk->queue;  in disk_stack_limits()  local
674 	if (bdev_stack_limits(&t->limits, bdev, offset >> 9) < 0) {  in disk_stack_limits()