On Wednesday 05 November 2014, Vlastimil Babka wrote:
> Can you please try the following patch?
> --- a/mm/compaction.c
> +++ b/mm/compaction.c
> @@ -1325,13 +1325,6 @@ unsigned long try_to_compact_pages(struct zonelist
> -			compaction_defer_reset(zone, order, false);

NACK :(

I just got again into a state that some task was spinning out of control, and 
blocking the rest of the desktop.

You will see me trying a few things, apparently the first OOM managed to 
unblock something, but a few seconds later the system "stepped" on some other 
blocking task.

See attached log, it may only give you some hint; the problem could well be in 
some other part of the kernel.

In the meanwhile, I'm pulling linus/master ...