From: Andy Adamson <andros@xxxxxxxxxx>
The sequence operation is not cached; always encode the sequence operation on
a replay from the slot table and session values. This simplifies the sessions
replay logic in nfsd4_proc_compound.
If this is a replay of a compound that was specified not to be cached, return
NFS4ERR_RETRY_UNCACHED_REP.
Signed-off-by: Andy Adamson <andros@xxxxxxxxxx>
---
fs/nfsd/nfs4proc.c | 33 +--------------------------------
fs/nfsd/nfs4state.c | 40 ++++++++++++++++++++++++++++++++++++----
2 files changed, 37 insertions(+), 36 deletions(-)
diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
index 386deb5..87be518 100644
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -947,34 +947,6 @@ static struct nfsd4_operation nfsd4_ops[];
static const char *nfsd4_op_name(unsigned opnum);
/*
- * This is a replay of a compound for which no cache entry pages
- * were used. Encode the sequence operation, and if cachethis is FALSE
- * encode the uncache rep error on the next operation.
- */
-static __be32
-nfsd4_enc_sequence_replay(struct nfsd4_compoundargs *args,
- struct nfsd4_compoundres *resp)
-{
- struct nfsd4_op *op;
-
- dprintk("--> %s resp->opcnt %d sl_cachethis %u \n", __func__,
- resp->opcnt, resp->cstate.slot->sl_cachethis);
-
- /* Encode the replayed sequence operation */
- BUG_ON(resp->opcnt != 1);
- op = &args->ops[resp->opcnt - 1];
- nfsd4_encode_operation(resp, op);
-
- /*return nfserr_retry_uncached_rep in next operation. */
- if (resp->cstate.slot->sl_cachethis == 0) {
- op = &args->ops[resp->opcnt++];
- op->status = nfserr_retry_uncached_rep;
- nfsd4_encode_operation(resp, op);
- }
- return op->status;
-}
-
-/*
* Enforce NFSv4.1 COMPOUND ordering rules.
*
* TODO:
@@ -1086,10 +1058,7 @@ encode_op:
/* Only from SEQUENCE */
if (resp->cstate.status == nfserr_replay_cache) {
dprintk("%s NFS4.1 replay from cache\n", __func__);
- if (nfsd4_not_cached(resp))
- status = nfsd4_enc_sequence_replay(args, resp);
- else
- status = op->status;
+ status = op->status;
goto out;
}
if (op->status == nfserr_replay_me) {
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 2232b7b..51a51d2 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -1036,6 +1036,36 @@ out_warn:
}
/*
+ * Encode the replay sequence operation from the slot values.
+ * If cachethis is FALSE encode the uncached rep error on the next
+ * operation which sets resp->p and increments resp->opcnt for
+ * nfs4svc_encode_compoundres.
+ *
+ */
+static __be32
+nfsd4_enc_sequence_replay(struct nfsd4_compoundargs *args,
+ struct nfsd4_compoundres *resp)
+{
+ struct nfsd4_op *op;
+ struct nfsd4_slot *slot = resp->cstate.slot;
+
+ dprintk("--> %s resp->opcnt %d cachethis %u \n", __func__,
+ resp->opcnt, resp->cstate.slot->sl_cachethis);
+
+ /* Encode the replayed sequence operation */
+ op = &args->ops[resp->opcnt - 1];
+ nfsd4_encode_operation(resp, op);
+
+ /* Return nfserr_retry_uncached_rep in next operation. */
+ if (args->opcnt > 1 && slot->sl_cachethis == 0) {
+ op = &args->ops[resp->opcnt++];
+ op->status = nfserr_retry_uncached_rep;
+ nfsd4_encode_operation(resp, op);
+ }
+ return op->status;
+}
+
+/*
* Keep the first page of the replay. Copy the NFSv4.1 data from the first
* cached page. Replace any futher replay pages from the cache.
*/
@@ -1058,10 +1088,12 @@ nfsd4_replay_cache_entry(struct nfsd4_compoundres *resp,
* session inactivity timer fires and a solo sequence operation
* is sent (lease renewal).
*/
- if (seq && nfsd4_not_cached(resp)) {
- seq->maxslots = resp->cstate.session->se_fchannel.maxreqs;
- return nfs_ok;
- }
+ seq->maxslots = resp->cstate.session->se_fchannel.maxreqs;
+
+ /* Either returns 0 or nfserr_retry_uncached */
+ status = nfsd4_enc_sequence_replay(resp->rqstp->rq_argp, resp);
+ if (status == nfserr_retry_uncached_rep)
+ return status;
/* The sequence operation has been encoded, cstate->datap set. */
memcpy(resp->cstate.datap, slot->sl_data, slot->sl_datalen);
--
1.5.4.3
--
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