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Re: [Xen-devel] [PATCH v12 2/3] x86/mem_sharing: reset a fork



On Thu, Mar 26, 2020 at 4:17 AM Jan Beulich <jbeulich@xxxxxxxx> wrote:
>
> On 23.03.2020 18:04, Tamas K Lengyel wrote:
> > +static int mem_sharing_fork_reset(struct domain *d, struct domain *pd)
> > +{
> > +    int rc;
> > +    struct p2m_domain *p2m = p2m_get_hostp2m(d);
> > +    struct page_info *page, *tmp;
> > +
> > +    spin_lock(&d->page_alloc_lock);
> > +    domain_pause(d);
>
> Why do you take the lock first?

No particular reason - does the order matter?

Tamas



 


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