Maybe, there should be a memory maintainer in linux kernel group.
Here, I show some content from my patch (Documentation/vm_pps.txt). In brief, I make a revolution about Linux swap subsystem, the idea is described that SwapDaemon should scan and reclaim pages on UserSpace::vmalist other than current zone::active/inactive. The change will conspicuously enhance swap subsystem performance by 1) SwapDaemon can collect the statistic of process acessing pages and by it unmaps ptes, SMP specially benefits from it for we can use flush_tlb_range to unmap ptes batchly rather than frequently TLB IPI interrupt per a page in current Linux legacy swap subsystem. In fact, in some cases, we can even flush TLB without sending IPI. 2) Page-fault can issue better readahead requests since history data shows all related pages have conglomerating affinity. In contrast, Linux page-fault readaheads the pages relative to the SwapSpace position of current page-fault page. 3) It's conformable to POSIX madvise API family. - 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/
