linux-kernel - Re: [PATCH v5 09/29] iommufd: Do not unmap an owned iopt

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Message-ID: <aDDqzeHfq8RtYCnJ@Asurada-Nvidia>
Date: Fri, 23 May 2025 14:38:21 -0700
From: Nicolin Chen <nicolinc@...dia.com>
To: "Tian, Kevin" <kevin.tian@...el.com>
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Subject: Re: [PATCH v5 09/29] iommufd: Do not unmap an owned iopt_area

On Fri, May 23, 2025 at 07:53:37AM +0000, Tian, Kevin wrote:
> > From: Nicolin Chen <nicolinc@...dia.com>
> > Sent: Sunday, May 18, 2025 11:21 AM
> > 
> > @@ -48,6 +48,7 @@ struct iopt_area {
> >  	int iommu_prot;
> >  	bool prevent_access : 1;
> >  	unsigned int num_accesses;
> > +	unsigned int num_owners;
> 
> What about 'num_locked' to directly mark out that this area
> is locked hence cannot be removed? 

Yea. That sounds more straightforward to me. I will keep it plural
"num_locks". And "is_owner" can be just "locks_area".

Thanks
Nicolin