nfsd4: use session limits to release send buffer reservation

Once we know the limits the session places on the size of the rpc, we
can also use that information to release any unnecessary reserved reply
buffer space.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>

diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 612b85ac414bf63bf5838ac9be6881dcd25570bf..62b882dc48ec2e011610e3163d5cc91c94130c73 100644 (file)
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -2290,6 +2290,7 @@ nfsd4_sequence(struct svc_rqst *rqstp,
                                    nfserr_rep_too_big;
        if (xdr_restrict_buflen(xdr, buflen - 2 * RPC_MAX_AUTH_SIZE))
                goto out_put_session;
+       svc_reserve(rqstp, buflen);
 
        status = nfs_ok;
        /* Success! bump slot seqid */