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

[Haakon Bugge]

> On 9 Sep 2025, at 12:54, Paolo Abeni <pabeni at redhat.com> wrote:
> 
> 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.

Yes, it's lean. Let me expand on it.

>> 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.

I agree, overlooked that. I'll send a v3 tomorrow.

Thanks for the review, Håkon

> 
> /P
>