Messages in this thread | | | Subject | Re: [PATCH 00/13] Swap-over-NBD without deadlocking | From | Peter Zijlstra <> | Date | Tue, 26 Apr 2011 16:50:49 +0200 |
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On Tue, 2011-04-26 at 15:46 +0100, Mel Gorman wrote: > > I did find that only a few route-cache entries should be required. In > the original patches I worked with, there was a reservation for the > maximum possible number of route-cache entries. I thought this was > overkill and instead reserved 1-per-active-swapfile-backed-by-NFS.
Right, so the thing I was worried about was a route-cache poison attack where someone would spam the machine such that it would create a lot of route cache entries and might flush the one we needed just as we needed it.
Pinning the one entry we need would solve that (if possible).
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