diff options
| -rw-r--r-- | fs/nfsd/nfs4state.c | 49 |
1 files changed, 47 insertions, 2 deletions
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index 3b4d74cbb6c..596702e157c 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -658,13 +658,18 @@ static struct nfsd4_conn *alloc_conn(struct svc_rqst *rqstp) return conn; } +static void __nfsd4_hash_conn(struct nfsd4_conn *conn, struct nfsd4_session *ses) +{ + conn->cn_session = ses; + list_add(&conn->cn_persession, &ses->se_conns); +} + static void nfsd4_hash_conn(struct nfsd4_conn *conn, struct nfsd4_session *ses) { struct nfs4_client *clp = ses->se_client; spin_lock(&clp->cl_lock); - conn->cn_session = ses; - list_add(&conn->cn_persession, &ses->se_conns); + __nfsd4_hash_conn(conn, ses); spin_unlock(&clp->cl_lock); } @@ -1612,6 +1617,44 @@ out: return status; } +static struct nfsd4_conn *__nfsd4_find_conn(struct svc_rqst *r, struct nfsd4_session *s) +{ + struct nfsd4_conn *c; + + list_for_each_entry(c, &s->se_conns, cn_persession) { + if (c->cn_xprt == r->rq_xprt) { + return c; + } + } + return NULL; +} + +static void nfsd4_sequence_check_conn(struct svc_rqst *rqstp, struct nfsd4_session *ses) +{ + struct nfs4_client *clp = ses->se_client; + struct nfsd4_conn *c, *new = NULL; + + spin_lock(&clp->cl_lock); + c = __nfsd4_find_conn(rqstp, ses); + spin_unlock(&clp->cl_lock); + if (c) + return; + + new = alloc_conn(rqstp); + + spin_lock(&clp->cl_lock); + c = __nfsd4_find_conn(rqstp, ses); + if (c) { + spin_unlock(&clp->cl_lock); + free_conn(new); + return; + } + __nfsd4_hash_conn(new, ses); + spin_unlock(&clp->cl_lock); + nfsd4_register_conn(new); + return; +} + __be32 nfsd4_sequence(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, @@ -1656,6 +1699,8 @@ nfsd4_sequence(struct svc_rqst *rqstp, if (status) goto out; + nfsd4_sequence_check_conn(rqstp, session); + /* Success! bump slot seqid */ slot->sl_inuse = true; slot->sl_seqid = seq->seqid; |