Messages in this thread | | | From | Kyle Moffett <> | Subject | Re: Using fs views to isolate untrusted processes: I need an assistant architect in the USA for Phase I of a DARPA funded linux kernel project | Date | Thu, 26 Aug 2004 00:16:43 -0400 |
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On Aug 25, 2004, at 21:06, Chris Wright wrote: > * Kyle Moffett (mrmacman_g4@mac.com) wrote: >> I would find this much more useful if there was a really lightweight >> bind >> mount called a "filebind" or somesuch that could only bindmount files > This already works. > > # cd /tmp > # echo foo > a > # touch b > # mount --bind a b > # cat b > foo
I'm well aware of the technique, but I was wondering if there was any extra VFS baggage associated with a normal bind mount that might be eliminated by restricting a different version of a bind mount to only files. That's why I asked later if anybody had benchmarked the bind mount system to see how well it would scale to 1000 bound files and directories. If it's not a performance issue then I really don't care less, but I have a somewhat old box that must make do as a fileserver, so I'm very interested in maximizing the performance. I don't care much about extra RAM consumption, only about CPU and bus usage.
Cheers, Kyle Moffett
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