Re: [PATCH RFC 1/6] block: Rework bio_split() return value

[John Garry <john.g.garry@oracle.com>]

On 19/09/2024 16:50, Johannes Thumshirn wrote:
> On 19.09.24 11:25, John Garry wrote:
>> -	BUG_ON(sectors <= 0);
>> -	BUG_ON(sectors >= bio_sectors(bio));
>> +	if (WARN_ON(sectors <= 0))
>> +		return ERR_PTR(-EINVAL);
>> +	if (WARN_ON(sectors >= bio_sectors(bio)))
>> +		return ERR_PTR(-EINVAL);
> 
> Nit: WARN_ON_ONCE() otherwise it'll trigger endless amounts of
> stacktraces in dmesg.

Considering it is a BUG_ON() today, I don't expect this to be hit. And, 
even if it was, prob it would be some buggy corner case which 
occasionally occurs.

Anyway, I don't feel too strongly about this and I suppose a 
WARN_ON_ONCE() is ok.

Thanks,
John