Re: quicklists confuse meminfo

[Johannes Weiner]

Hi,

Ingo Molnar <mingo@xxxxxxx> writes:

> hm. I think we should not let this much RAM hang around in a 
> special-purpose allocator like quicklists. Shouldnt the quicklists be 
> temporary in nature, and be trimmed much more agressively?
>
> in fact, we have a check_pgt_cache() call in cpu_idle(), which does:
>
>         quicklist_trim(0, pgd_dtor, 25, 16);
>
> but it appears we dont do quicklist trimming anywhere else! So if a 
> system has no idle time, the quicklist can grow unbounded, and that's a 
> real memory leak IMO.

It is also called from tlbu_finish_mmu().

	Hannes
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