SUNRPC: move per-net operations from svc_destroy()
upstream commit 786185b5f8abefa6a8a16695bb4a59c164d5a071.
The idea is to separate service destruction and per-net operations,
because these are two different things and the mix looks ugly.
Notes:
1) For NFS server this patch looks ugly (sorry for that). But these
place will be rewritten soon during NFSd containerization.
2) LockD per-net counter increase int lockd_up() was moved prior to
make_socks() to make lockd_down_net() call safe in case of error.
Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/fs/lockd/svc.c b/fs/lockd/svc.c
index b7e92ed..3250f28 100644
--- a/fs/lockd/svc.c
+++ b/fs/lockd/svc.c
@@ -257,7 +257,7 @@
struct svc_serv *serv = nlmsvc_rqst->rq_server;
int error;
- if (ln->nlmsvc_users)
+ if (ln->nlmsvc_users++)
return 0;
error = svc_rpcb_setup(serv, net);
@@ -272,6 +272,7 @@
err_socks:
svc_rpcb_cleanup(serv, net);
err_rpcb:
+ ln->nlmsvc_users--;
return error;
}
@@ -299,6 +300,7 @@
{
struct svc_serv *serv;
int error = 0;
+ struct lockd_net *ln = net_generic(net, lockd_net_id);
mutex_lock(&nlmsvc_mutex);
/*
@@ -330,9 +332,11 @@
goto destroy_and_out;
}
+ ln->nlmsvc_users++;
+
error = make_socks(serv, net);
if (error < 0)
- goto destroy_and_out;
+ goto err_start;
/*
* Create the kernel thread and wait for it to start.
@@ -344,7 +348,7 @@
printk(KERN_WARNING
"lockd_up: svc_rqst allocation failed, error=%d\n",
error);
- goto destroy_and_out;
+ goto err_start;
}
svc_sock_update_bufs(serv);
@@ -358,7 +362,7 @@
nlmsvc_rqst = NULL;
printk(KERN_WARNING
"lockd_up: kthread_run failed, error=%d\n", error);
- goto destroy_and_out;
+ goto err_start;
}
/*
@@ -368,14 +372,14 @@
destroy_and_out:
svc_destroy(serv);
out:
- if (!error) {
- struct lockd_net *ln = net_generic(net, lockd_net_id);
-
- ln->nlmsvc_users++;
+ if (!error)
nlmsvc_users++;
- }
mutex_unlock(&nlmsvc_mutex);
return error;
+
+err_start:
+ lockd_down_net(net);
+ goto destroy_and_out;
}
EXPORT_SYMBOL_GPL(lockd_up);
@@ -386,11 +390,10 @@
lockd_down(struct net *net)
{
mutex_lock(&nlmsvc_mutex);
+ lockd_down_net(net);
if (nlmsvc_users) {
- if (--nlmsvc_users) {
- lockd_down_net(net);
+ if (--nlmsvc_users)
goto out;
- }
} else {
printk(KERN_ERR "lockd_down: no users! task=%p\n",
nlmsvc_task);