case REQ_OP_READ:
if (bio->bi_opf & REQ_RAHEAD) {
/* readahead of null bytes only wastes buffer cache */
- return -EIO;
+ return DM_MAPIO_KILL;
}
zero_fill_bio(bio);
break;
/* writes get silently dropped */
break;
default:
- return -EIO;
+ return DM_MAPIO_KILL;
}
bio_endio(bio);