[Devel] [RFC PATCH vz9 v6 23/62] dm-ploop: make new allocations immediately visible in BAT

[Alexander Atanasov]

On 20.01.25 10:49, Pavel Tikhomirov wrote:
> 
> 
> On 12/6/24 05:55, Alexander Atanasov wrote:
>> @@ -1120,6 +1117,8 @@ static int ploop_alloc_cluster(struct ploop 
>> *ploop, struct ploop_index_wb *piwb,
>>       to = piwb->kmpage;
>>       WRITE_ONCE(to[clu], *dst_clu);
>> +    to = piwb->md->kmpage;
>> +    WRITE_ONCE(to[clu], *dst_clu);
> 
> Probably we also need to set bat_levels here too.

yes, under lock too. a rule - if updateing both do it under lock.

	spin_lock_irq(&piwb->md->md_lock);
	WRITE_ONCE(to[clu], *dst_clu);
	WRITE_ONCE(piwb->md->bat_levels[clu], ploop_top_level(ploop));
	spin_unlock_irq(&piwb->md->md_lock);


> 
>>   out:
>>       return ret;
>>   }
> 

-- 
Regards,
Alexander Atanasov