On Fri, Dec 27, 2002 at 04:55:31PM -0500, Kevin Corry wrote:
> Check memory allocations when cloning bio's.
>
> --- linux-2.5.53a/drivers/md/dm.c Mon Dec 23 23:21:04 2002
> +++ linux-2.5.53b/drivers/md/dm.c Fri Dec 27 14:50:29 2002
> @@ -394,6 +393,10 @@
> */
> clone = clone_bio(bio, ci->sector, ci->idx,
> bio->bi_vcnt - ci->idx, ci->sector_count);
> + if (!clone) {
> + dec_pending(ci->io, -ENOMEM);
> + return;
> + }
> __map_bio(ti, clone, ci->io);
> ci->sector_count = 0;
>
> @@ -417,6 +420,10 @@
> }
>
> clone = clone_bio(bio, ci->sector, ci->idx, i - ci->idx, len);
> + if (!clone) {
> + dec_pending(ci->io, -ENOMEM);
> + return;
> + }
> __map_bio(ti, clone, ci->io);
>
> ci->sector += len;
This seems a bit insufficient. Why is this error not propagated up
through to __split_bio ?
Jeff
