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> > > One dutifully wonders whether all this functionality could be > > > provided via FUSE... > > > > My main concern with FUSE has to do with shared memory mappings. > > OK. But I'm sure Miklos would appreciate help with that ;) You bet. > > My next concern is with regard to performance impact of constant > > context switching during page reads and writes. > > Maybe. One could estimate the cost of that by benchmarking an existing > (efficient) FUSE fs and then add fiddle factors. If the number of copies > is the same for in-kernel versus FUSE then one would expect the performance > to be similar. Especially if the encrypt/decryption cost perponderates. The main overhead of FUSE is not in copies, but in context switching. For I/O that can be mitigated by doing it in big chunks, otherwise the only solution is adding more processors. Miklos - 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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