Re: [RFC] mm: why vfree() do not free page table memory?

[Xishi Qiu]

On 2017/12/29 16:58, Xishi Qiu wrote:

> When calling vfree(), it calls unmap_vmap_area() to clear page table,
> but do not free the memory of page table, why? just for performance?
> 
> If a driver use vmalloc() and vfree() frequently, we will lost much
> page table memory, maybe oom later.
> 
> Thanks,
> Xishi Qiu
> 

ping

> 
> .
>