On Tue, Mar 20, 2018 at 09:21:33PM -0700, Figo.zhang wrote: > suppose that in free_one_page() will try to merge to high order anytime , > but now in your patch, > those merge has postponed when system in low memory status, it is very easy > let system trigger > low memory state and get poor performance. Merge or not merge, the size of free memory is not affected.
