Messages in this thread | | | Date | Mon, 16 Jan 2006 18:24:49 +0100 | From | Andrea Arcangeli <> | Subject | Re: differences between MADV_FREE and MADV_DONTNEED |
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On Mon, Jan 16, 2006 at 09:03:00AM -0800, Suleiman Souhlal wrote: > Andrea Arcangeli wrote: > > >We can also use it for the same purpose, we could add the pages to > >swapcache mark them dirty and zap the ptes _after_ that. > > Wouldn't that cause the pages to get swapped out immediately?
Not really, it would be a non blocking operation. But they could be swapped out shortly later (that's the whole point of DONTNEED, right?), once there is more memory pressure. Otherwise if they're used again, a minor fault will happen and it will find the swapcache uptodate in ram. - 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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