[rds-devel] [PATCH net 1/2] rds: ib: Increment i_fastreg_wrs before bailing out

[Paolo Abeni]

On 9/3/25 6:31 PM, Håkon Bugge wrote:
> We need to increment i_fastreg_wrs before we bail out from
> rds_ib_post_reg_frmr().

Elaborating a bit more on the `why` could help the review.

> 
> Fixes: 1659185fb4d0 ("RDS: IB: Support Fastreg MR (FRMR) memory registration mode")
> Fixes: 3a2886cca703 ("net/rds: Keep track of and wait for FRWR segments in use upon shutdown")
> Signed-off-by: Håkon Bugge <haakon.bugge at oracle.com>

[...]
@@ -178,9 +181,11 @@ static int rds_ib_post_reg_frmr(struct rds_ib_mr *ibmr)
>  	 * being accessed while registration is still pending.
>  	 */
>  	wait_event(frmr->fr_reg_done, !frmr->fr_reg);
> -
>  out:
> +	return ret;
>  
> +out_inc:
> +	atomic_inc(&ibmr->ic->i_fastreg_wrs);

The existing error path on ib_post_send() is left untouched. I think it
would be cleaner and less error prone to let it use the above label, too.

/P