Messages in this thread | | | Date | Sun, 13 Jul 2003 17:24:14 -0700 | From | "David S. Miller" <> | Subject | Re: TCP IP Offloading Interface |
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On Sun, 13 Jul 2003 17:22:00 -0700 Larry McVoy <lm@bitmover.com> wrote:
> Hey, maybe it isn't, but could you please quantify the cost of the VM > operations? How hard is that?
Ok.
So the page is in a non-uptodate state, NFS would have it locked, and anyone else trying to get at it would sleep.
This page we have currently is "dummy" in that it is only a place holder in case we don't get a full page from the networking.
We have all the infrastructure to do everything up to this point.
Next, if the networking gave us a full page, we'd "replace" the dummy page with this one, which would involve:
1) delete the dummy page from the lookup, insert the networking's page
2) arrange so that all sleepers on the dummy page will do a relookup and find the new page
And when we're done with the operation we wake everyone up.
I can't see any part of this turning out to be 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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