On Mon, Jul 6, 2020 at 5:59 AM Muchun Song <songmuchun@xxxxxxxxxxxxx> wrote: > When we are in the interrupt context, it is irrelevant to the > current task context. If we use current task's mems_allowed, we > can fair to alloc pages in the fast path and fall back to slow > path memory allocation when the current node(which is the current > task mems_allowed) does not have enough memory to allocate. In > this case, it slows down the memory allocation speed of interrupt > context. So we can skip setting the nodemask to allow any node > to allocate memory, so that fast path allocation can success. > > Signed-off-by: Muchun Song <songmuchun@xxxxxxxxxxxxx> Reviewed-by: Pekka Enberg <penberg@xxxxxxxxxx>
