On 10/24/19 4:20 AM, Michal Hocko wrote: > On Wed 23-10-19 12:27:35, Michal Hocko wrote: > [...] >> I went with a bound to the pages iteratred over in the free_list. See >> patch 2. > I will fold http://lkml.kernel.org/r/20191023180121.GN17610@xxxxxxxxxxxxxx > to patch 2 unless there are any objections. If there are no further > comments I will send the two patches without an RFC tomorrow. > > Thanks for all the feedback. I am fine with your change. My concern is to make sure that there is a reasonable bound to the worst case scenario. With that change, the upper bound is iterating 100,000 list entries. I think Andrew suggested lowering it to 1024. That I think may be too low, but I don't mind if it is lowered somewhat from the current value. Cheers, Longman