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nfsd4: more precise nfsd4_max_reply

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It will turn out to be useful to have a more accurate estimate of reply
size; so, piggyback on the existing op reply-size estimators.

Also move nfsd4_max_reply to nfs4proc.c to get easier access to struct
nfsd4_operation and friends.  (Thanks to Christoph Hellwig for pointing
out that simplification.)

Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
J. Bruce Fields 2014-03-11 15:39:13 -04:00
parent 8c7424cff6
commit 4f0cefbf38
3 changed files with 17 additions and 31 deletions
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12
fs/nfsd/nfs4proc.c
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@ -1854,6 +1854,18 @@ static struct nfsd4_operation nfsd4_ops[] = {
},
};
int nfsd4_max_reply(struct svc_rqst *rqstp, struct nfsd4_op *op)
{
struct nfsd4_operation *opdesc;
nfsd4op_rsize estimator;
if (op->opnum == OP_ILLEGAL)
return op_encode_hdr_size * sizeof(__be32);
opdesc = OPDESC(op);
estimator = opdesc->op_rsize_bop;
return estimator ? estimator(rqstp, op) : PAGE_SIZE;
}
void warn_on_nonidempotent_op(struct nfsd4_op *op)
{
if (OPDESC(op)->op_flags & OP_MODIFIES_SOMETHING) {