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nfsd4: track backchannel connections

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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>
This commit is contained in:
J. Bruce Fields 2010-06-15 17:34:11 -04:00 committed by J. Bruce Fields
parent 86c3e16cc7
commit d29c374cd2
1 changed files with 7 additions and 4 deletions
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11
fs/nfsd/nfs4state.c
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@ -644,7 +644,7 @@ static void nfsd4_conn_lost(struct svc_xpt_user *u)
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 @@ static struct nfsd4_conn *alloc_conn(struct svc_rqst *rqstp)
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 void nfsd4_register_conn(struct nfsd4_conn *conn)
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 @@ static void nfsd4_sequence_check_conn(struct svc_rqst *rqstp, struct nfsd4_sessi
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);