Re: [PATCH 1/2] mm: vmalloc: streamline vmalloc memory accounting

[Johannes Weiner <hannes@cmpxchg.org>]

On Fri, Feb 20, 2026 at 02:09:28PM -0800, Shakeel Butt wrote:
> On Fri, Feb 20, 2026 at 02:10:34PM -0500, Johannes Weiner wrote:
> [...]
> >  static struct vmap_area *__find_vmap_area(unsigned long addr, struct rb_root *root)
> >  {
> >  	struct rb_node *n = root->rb_node;
> > @@ -3463,11 +3457,11 @@ void vfree(const void *addr)
> >  		 * High-order allocs for huge vmallocs are split, so
> >  		 * can be freed as an array of order-0 allocations
> >  		 */
> > +		if (!(vm->flags & VM_MAP_PUT_PAGES))
> > +			dec_node_page_state(page, NR_VMALLOC);
> >  		__free_page(page);
> >  		cond_resched();
> >  	}
> > -	if (!(vm->flags & VM_MAP_PUT_PAGES))
> > -		atomic_long_sub(vm->nr_pages, &nr_vmalloc_pages);
> >  	kvfree(vm->pages);
> >  	kfree(vm);
> >  }
> > @@ -3655,6 +3649,8 @@ vm_area_alloc_pages(gfp_t gfp, int nid,
> >  			continue;
> >  		}
> >  
> > +		mod_node_page_state(page, NR_VMALLOC, 1 << large_order);
> 
> mod_node_page_state() takes 'struct pglist_data *pgdat', you need to use
> page_pgdat(page) as first param.

Good catch, my apologies. Serves me right for not compiling
incrementally.

> With above fixes, you can add:
> 
> Acked-by: Shakeel Butt <shakeel.butt@linux.dev>

Thanks! I'll send out v2.