(2012/11/14 10:55), Li Zefan wrote: > On 2012/11/13 23:30, Michal Hocko wrote: >> Hi all, >> this patch set tries to make mem_cgroup_iter saner in the way how it >> walks hierarchies. css->id based traversal is far from being ideal as it >> is not deterministic because it depends on the creation ordering. >> >> Diffstat looks promising but it is fair the say that the biggest cleanup is >> just css_get_next removal. The memcg code has grown a bit but I think it is >> worth the resulting outcome (the sanity ;)). >> > > So memcg won't use css id at all, right? Then we can remove the whole css_id > stuff, and that's quite a bunch of code. > It's used by swap information recording for saving spaces.
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