On Wed 12-12-12 10:06:52, Michal Hocko wrote:

On Tue 11-12-12 14:36:10, Ying Han wrote:

[...]

quoted

One exception is mem_cgroup_iter_break(), where the loop terminates
with *leaked* refcnt and that is what the iter_break() needs to clean
up. We can not rely on the next caller of the loop since it might
never happen.

Yes, this is true and I already have a half baked patch for that. I
haven't posted it yet but it basically checks all node-zone-prio
last_visited and removes itself from them on the way out in pre_destroy
callback (I just need to cleanup "find a new last_visited" part and will
post it).

And a half baked patch - just compile tested
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