Messages in this thread | | | Date | Fri, 26 Jan 2007 07:44:42 -0800 (PST) | From | Christoph Lameter <> | Subject | Re: [RFC] Track mlock()ed pages |
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On Fri, 26 Jan 2007, Andrew Morton wrote:
> > > > Track mlocked pages via a ZVC > > Why?
Large amounts of mlocked pages may be a problem for
1. Reclaim behavior.
2. Defragmentation
> You could perhaps go for a walk across all the other vmas which presently > map this page. If any of them have VM_LOCKED, don't increment the counter. > Similar on removal: only decrement the counter when the final mlocked VMA > is dropping the pte.
For that we would need an additional refcount for vmlocked maps in the page struct. Looks too expensive. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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