On Fri, Jan 13, 2017 at 02:09:53AM -0800, David Rientjes wrote: > When memory.move_charge_at_immigrate is enabled and precharges are > depleted during move, mem_cgroup_move_charge_pte_range() will attempt to > increase the size of the precharge. > > Prevent precharges from ever looping by setting __GFP_NORETRY. This was > probably the intention of the GFP_KERNEL & ~__GFP_NORETRY, which is > pointless as written.
The OOM killer livelock was the motivation for this patch. With that ruled out, what's the point of this patch? Try a bit less hard to move charges during task migration?
