Hello, On Sun, Sep 21, 2014 at 07:14:32PM +0400, Vladimir Davydov wrote: ... > list. This is really important, because this allows us to release > memcg_cache_id used for indexing in per-memcg arrays. If we don't do > this, the arrays will grow uncontrollably, which is really bad. Note, in > comparison to user memory reparenting, which Johannes is going to get I don't know the code well and haven't read the patches and could easilya be completely off the mark, but, if the size of slab array is the only issue, wouldn't it be easier to separate that part out? The indexing is only necessary for allocating new items, right? Can't that part be shutdown and the index freed on offline and the rest stay till release? Things like reparenting tends to add fair amount of complexity and hot path overheads which aren't necessary otherwise. Thanks. -- tejun -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>