nfsd: per-net NFSd up flag introduced

This patch introduces introduces per-net "nfsd_net_up" boolean flag, which has
the same purpose as general "nfsd_up" flag - skip init or shutdown of per-net
resources in case of they are inited on shutted down respectively.

Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c
index 038348bc1a09..6e17efdd8afe 100644
--- a/fs/nfsd/nfssvc.c
+++ b/fs/nfsd/nfssvc.c
@@ -21,6 +21,7 @@
 #include "nfsd.h"
 #include "cache.h"
 #include "vfs.h"
+#include "netns.h"
 
 #define NFSDDBG_FACILITY        NFSDDBG_SVC
 
@@ -205,8 +206,12 @@ static bool nfsd_up = false;
 
 static int nfsd_startup_net(struct net *net)
 {
+        struct nfsd_net *nn = net_generic(net, nfsd_net_id);
         int ret;
 
+        if (nn->nfsd_net_up)
+                return 0;
+
         ret = nfsd_init_socks(net);
         if (ret)
                 return ret;
@@ -217,6 +222,7 @@ static int nfsd_startup_net(struct net *net)
         if (ret)
                 goto out_lockd;
 
+        nn->nfsd_net_up = true;
         return 0;
 
 out_lockd:
@@ -257,8 +263,14 @@ out_racache:
 
 static void nfsd_shutdown_net(struct net *net)
 {
+        struct nfsd_net *nn = net_generic(net, nfsd_net_id);
+
+        if (!nn->nfsd_net_up)
+                return;
+
         nfs4_state_shutdown_net(net);
         lockd_down(net);
+        nn->nfsd_net_up = false;
 }
 
 static void nfsd_shutdown(struct net *net)