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nfsd: disable deferral for NFSv4
Now that a slight delay in getting a reply to an upcall doesn't require deferring of requests, request deferral for all NFSv4 requests - the concept doesn't really fit with the v4 model. Signed-off-by: NeilBrown <neilb@suse.de> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
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@ -1031,8 +1031,11 @@ nfsd4_proc_compound(struct svc_rqst *rqstp,
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resp->cstate.session = NULL;
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fh_init(&resp->cstate.current_fh, NFS4_FHSIZE);
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fh_init(&resp->cstate.save_fh, NFS4_FHSIZE);
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/* Use the deferral mechanism only for NFSv4.0 compounds */
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rqstp->rq_usedeferral = (args->minorversion == 0);
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/*
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* Don't use the deferral mechanism for NFSv4; compounds make it
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* too hard to avoid non-idempotency problems.
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*/
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rqstp->rq_usedeferral = 0;
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/*
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* According to RFC3010, this takes precedence over all other errors.
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