Messages in this thread | | | From | Neil Brown <> | Date | Mon, 13 Mar 2006 15:39:37 +1100 | Subject | Re: 2.6.16-rc6-mm1 (NFS tree ... busy inodes ... relatively harmless) |
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On Sunday March 12, akpm@osdl.org wrote: > > - The NFS tree is a bit sick - you may see the `busy inodes - self destruct > in five seconds" message when performing NFS unmounts. It seems relatively > harmless.
I think the term is "mostly harmless" ... see the entry for "Earth" in The Hitch-Hikers Guide To The Galaxy... :-)
I don't believe this is harmless at all, and I have an oops to prove it - though it is with NFSv4 which is still EXPERIMENTAL.
I don't believe it is an NFS bug at all, but a VFS bug. It happens more with NFS because iput on nfs can be a lot slower due to the required network activity, so the race is easier to hit.
See the Fix shrink_dcache_parent() against shrink_dcache_memory() race threads.
Of course there could be other bugs...
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