On Mon, 9 Apr 2007, Andi Kleen wrote: > > Otherwise you will leak pages to the page allocator before the tlb flush > > occurred. > > I don't get it sorry. Can you please explain in more detail?
On process teardown pages are freed via the tlb mechanism. That mechanism guarantees that TLBs for pages are flushed before they can be reused. We tie into that and put pages on quicklists. The quicklists are trimmed after the TLB flush. If a shrinker would indepedently free pages from the quicklists then this mechanism would no longer work and pages that still have a valid TLB for one process may be reused by other processes. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
