[PATCH 02/19] NFSD: handle error better in write_ports_addfd()

[NeilBrown <neilb@xxxxxxx>]

If write_ports_add() fails, we shouldn't destroy the serv, unless we had
only just created it.  So if there are any permanent sockets already
attached, leave the serv in place.

Signed-off-by: NeilBrown <neilb@xxxxxxx>
---
 fs/nfsd/nfsctl.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c
index 5eb564e58a9b..93d417871302 100644
--- a/fs/nfsd/nfsctl.c
+++ b/fs/nfsd/nfsctl.c
@@ -742,7 +742,7 @@ static ssize_t __write_ports_addfd(char *buf, struct net *net, const struct cred
 		return err;
 
 	err = svc_addsock(nn->nfsd_serv, fd, buf, SIMPLE_TRANSACTION_LIMIT, cred);
-	if (err < 0) {
+	if (err < 0 && list_empty(&nn->nfsd_serv->sv_permsocks)) {
 		nfsd_put(net);
 		return err;
 	}