Messages in this thread | | | Date | Thu, 20 Oct 2005 16:06:38 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH 0/4] Swap migration V3: Overview |
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Christoph Lameter <clameter@sgi.com> wrote: > > Page migration is also useful for other purposes: > > 1. Memory hotplug. Migrating processes off a memory node that is going > to be disconnected. > > 2. Remapping of bad pages. These could be detected through soft ECC errors > and other mechanisms.
It's only useful for these things if it works with close-to-100% reliability.
And there are are all sorts of things which will prevent that - mlock, ongoing direct-io, hugepages, whatever.
So before we can commit ourselves to the initial parts of this path we'd need some reassurance that the overall scheme addresses these things and that the end result has a high probability of supporting hot unplug and remapping sufficiently well. - 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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