On 11/28/2016 07:54 PM, Christoph Lameter wrote: > On Mon, 28 Nov 2016, Mel Gorman wrote: > >> If you have a series aimed at parts of the fragmentation problem or how >> subsystems can avoid tracking 4K pages in some important cases then by >> all means post them. > > I designed SLUB with defrag methods in mind. We could warm up some old > patchsets that where never merged: > > https://lkml.org/lkml/2010/1/29/332
Note that some other solutions to the dentry cache problem (perhaps of a more low-hanging fruit kind) were also discussed at KS/LPC MM panel session: https://lwn.net/Articles/705758/