nfsd4: track backchannel connections
We need to keep track of which connections are available for use with
the backchannel, which for the forechannel, and which for both.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 7e817d1..c470cb7 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -644,7 +644,7 @@
spin_unlock(&clp->cl_lock);
}
-static struct nfsd4_conn *alloc_conn(struct svc_rqst *rqstp)
+static struct nfsd4_conn *alloc_conn(struct svc_rqst *rqstp, u32 flags)
{
struct nfsd4_conn *conn;
@@ -653,7 +653,7 @@
return NULL;
svc_xprt_get(rqstp->rq_xprt);
conn->cn_xprt = rqstp->rq_xprt;
- conn->cn_flags = NFS4_CDFC4_FORE;
+ conn->cn_flags = flags;
INIT_LIST_HEAD(&conn->cn_xpt_user.list);
return conn;
}
@@ -682,8 +682,11 @@
static __be32 nfsd4_new_conn(struct svc_rqst *rqstp, struct nfsd4_session *ses)
{
struct nfsd4_conn *conn;
+ u32 flags = NFS4_CDFC4_FORE;
- conn = alloc_conn(rqstp);
+ if (ses->se_flags & SESSION4_BACK_CHAN)
+ flags |= NFS4_CDFC4_BACK;
+ conn = alloc_conn(rqstp, flags);
if (!conn)
return nfserr_jukebox;
nfsd4_hash_conn(conn, ses);
@@ -1640,7 +1643,7 @@
if (c)
return;
- new = alloc_conn(rqstp);
+ new = alloc_conn(rqstp, NFS4_CDFC4_FORE);
spin_lock(&clp->cl_lock);
c = __nfsd4_find_conn(rqstp, ses);