fs/btrfs/volumes.c

6446 				const struct btrfs_io_stripe *smap,
6451 	if (!smap)
6609  * @smap:		(Optional) single physical range optimization.
6612  *			then @bioc_ret would be NULL, and @smap would be
6634 		    struct btrfs_io_stripe *smap, int *mirror_num_ret)
6733 	if (is_single_device_io(fs_info, smap, map, num_alloc_stripes, op,
6735 		ret = set_io_stripe(fs_info, logical, length, smap, map, &io_geom);
8320 				    struct btrfs_io_stripe *smap,
8335 	smap->dev = bioc->stripes[i].dev;
8336 	smap->physical = bioc->stripes[i].physical +
8355 			   struct btrfs_io_stripe *smap, u64 logical,
8366 			      &bioc, smap, &mirror_ret);
8379 		map_raid56_repair_block(bioc, smap, logical);
8384 	smap->dev = bioc->stripes[mirror_num - 1].dev;
8385 	smap->physical = bioc->stripes[mirror_num - 1].physical;
8388 	ASSERT(smap->dev);