[BLOCK] aoe: update for combined io statistics

Signed-off-by: Jens Axboe <axboe@suse.de>

drivers/block/aoe/aoecmd.c

@@ -468,16 +468,11 @@ aoecmd_ata_rsp(struct sk_buff *skb)
 			unsigned long duration = jiffies - buf->start_time;
 			unsigned long n_sect = buf->bio->bi_size >> 9;
 			struct gendisk *disk = d->gd;
+			const int rw = bio_data_dir(buf->bio);
 
-			if (bio_data_dir(buf->bio) == WRITE) {
-				disk_stat_inc(disk, writes);
-				disk_stat_add(disk, write_ticks, duration);
-				disk_stat_add(disk, write_sectors, n_sect);
-			} else {
-				disk_stat_inc(disk, reads);
-				disk_stat_add(disk, read_ticks, duration);
-				disk_stat_add(disk, read_sectors, n_sect);
-			}
+			disk_stat_inc(disk, ios[rw]);
+			disk_stat_add(disk, ticks[rw], duration);
+			disk_stat_add(disk, sectors[rw], n_sect);
 			disk_stat_add(disk, io_ticks, duration);
 			n = (buf->flags & BUFFL_FAIL) ? -EIO : 0;
 			bio_endio(buf->bio, buf->bio->bi_size, n);