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nfsd41: nfsd DRC logic

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Replay a request in nfsd4_sequence.
Add a minorversion to struct nfsd4_compound_state.

Pass the current slot to nfs4svc_encode_compound res via struct
nfsd4_compoundres to set an NFSv4.1 DRC entry.

Signed-off-by: Andy Adamson<andros@netapp.com>
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
[nfsd41: use bool inuse for slot state]
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
[nfsd41: use cstate session in nfs4svc_encode_compoundres]
[nfsd41 replace nfsd4_set_cache_entry]
Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
This commit is contained in:
Andy Adamson 2009-04-03 08:28:22 +03:00 committed by J. Bruce Fields
parent c3d06f9ce8
commit da3846a286
4 changed files with 25 additions and 0 deletions
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7
fs/nfsd/nfs4proc.c
View File

@ -936,6 +936,12 @@ nfsd4_proc_compound(struct svc_rqst *rqstp,
BUG_ON(op->status == nfs_ok);
encode_op:
/* Only from SEQUENCE or CREATE_SESSION */
if (resp->cstate.status == nfserr_replay_cache) {
dprintk("%s NFS4.1 replay from cache\n", __func__);
status = op->status;
goto out;
}
if (op->status == nfserr_replay_me) {
op->replay = &cstate->replay_owner->so_replay;
nfsd4_encode_replay(resp, op);
@ -964,6 +970,7 @@ encode_op:
status = nfserr_jukebox;
}
resp->cstate.status = status;
fh_put(&resp->cstate.current_fh);
fh_put(&resp->cstate.save_fh);
BUG_ON(resp->cstate.replay_owner);

6
fs/nfsd/nfs4state.c
View File

@ -989,6 +989,8 @@ nfsd4_replay_cache_entry(struct nfsd4_compoundres *resp)
}
resp->rqstp->rq_resused = entry->ce_resused;
resp->opcnt = entry->ce_opcnt;
resp->cstate.iovlen = entry->ce_datav.iov_len + entry->ce_rpchdrlen;
status = entry->ce_status;
return status;
@ -1214,6 +1216,10 @@ nfsd4_sequence(struct svc_rqst *rqstp,
if (status == nfserr_replay_cache) {
cstate->slot = slot;
cstate->session = session;
/* Return the cached reply status and set cstate->status
* for nfsd4_svc_encode_compoundres processing*/
status = nfsd4_replay_cache_entry(resp);
cstate->status = nfserr_replay_cache;
goto replay_cache;
}
if (status)

11
fs/nfsd/nfs4xdr.c
View File

@ -3049,6 +3049,17 @@ nfs4svc_encode_compoundres(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compo
iov = &rqstp->rq_res.head[0];
iov->iov_len = ((char*)resp->p) - (char*)iov->iov_base;
BUG_ON(iov->iov_len > PAGE_SIZE);
if (resp->cstate.slot != NULL) {
if (resp->cstate.status == nfserr_replay_cache) {
iov->iov_len = resp->cstate.iovlen;
} else {
nfsd4_store_cache_entry(resp);
dprintk("%s: SET SLOT STATE TO AVAILABLE\n", __func__);
resp->cstate.slot->sl_inuse = 0;
}
if (resp->cstate.session)
nfsd4_put_session(resp->cstate.session);
}
return 1;
}

1
include/linux/nfsd/xdr4.h
View File

@ -52,6 +52,7 @@ struct nfsd4_compound_state {
struct nfsd4_session *session;
struct nfsd4_slot *slot;
__be32 *statp;
size_t iovlen;
u32 status;
};