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subject "Data corruption over NFS in -current". During investigation of this, I came across an ugly bogusity in the new NFS client where it replaced the cr_uid with the one used for the mount. This was done so that "system operations" like the NFSv4 Renew would be performed as the user that did the mount. However, if any other thread shares the credential with the one doing this operation, it could do an RPC (or just about anything else) as the wrong cr_uid. This patch fixes the above, by using the mount credentials instead of the one provided as an argument for this case. It appears to have fixed Martin's problem. This patch is needed for NFSv4 mounts and NFSv3 mounts against some non-FreeBSD servers that do not put post operation attributes in the NFSv3 Statfs RPC reply. Tested by: Martin Cracauer (cracauer at cons.org) Reviewed by: jhb MFC after: 2 weeks
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