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 > > . >
