LockD: mark host per network namespace on garbage collect

This is required for per-network NLM shutdown and cleanup.
This patch passes init_net for a while.

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

2 files changed, 15 insertions, 7 deletions

diff --git a/fs/lockd/host.c b/fs/lockd/host.c
index eb75ca7c2d6e..2c5f41b098e9 100644
--- a/fs/lockd/host.c
+++ b/fs/lockd/host.c
@@ -628,13 +628,14 @@ nlm_gc_hosts(void)
         struct hlist_head *chain;
         struct hlist_node *pos, *next;
         struct nlm_host *host;
+        struct net *net = &init_net;
 
         dprintk("lockd: host garbage collection\n");
         for_each_host(host, pos, chain, nlm_server_hosts)
                 host->h_inuse = 0;
 
         /* Mark all hosts that hold locks, blocks or shares */
-        nlmsvc_mark_resources();
+        nlmsvc_mark_resources(net);
 
         for_each_host_safe(host, pos, next, chain, nlm_server_hosts) {
                 if (atomic_read(&host->h_count) || host->h_inuse
diff --git a/fs/lockd/svcsubs.c b/fs/lockd/svcsubs.c
index 2240d384d787..0deb5f6c9dd4 100644
--- a/fs/lockd/svcsubs.c
+++ b/fs/lockd/svcsubs.c
@@ -309,7 +309,8 @@ nlm_release_file(struct nlm_file *file)
  * Helpers function for resource traversal
  *
  * nlmsvc_mark_host:
- *      used by the garbage collector; simply sets h_inuse.
+ *      used by the garbage collector; simply sets h_inuse only for those
+ *      hosts, which passed network check.
  *      Always returns 0.
  *
  * nlmsvc_same_host:
@@ -320,12 +321,15 @@ nlm_release_file(struct nlm_file *file)
  *      returns 1 iff the host is a client.
  *      Used by nlmsvc_invalidate_all
  */
+
 static int
-nlmsvc_mark_host(void *data, struct nlm_host *dummy)
+nlmsvc_mark_host(void *data, struct nlm_host *hint)
 {
         struct nlm_host *host = data;
 
-        host->h_inuse = 1;
+        if ((hint->net == NULL) ||
+            (host->net == hint->net))
+                host->h_inuse = 1;
         return 0;
 }
 
@@ -358,10 +362,13 @@ nlmsvc_is_client(void *data, struct nlm_host *dummy)
  * Mark all hosts that still hold resources
  */
 void
-nlmsvc_mark_resources(void)
+nlmsvc_mark_resources(struct net *net)
 {
-        dprintk("lockd: nlmsvc_mark_resources\n");
-        nlm_traverse_files(NULL, nlmsvc_mark_host, NULL);
+        struct nlm_host hint;
+
+        dprintk("lockd: nlmsvc_mark_resources for net %p\n", net);
+        hint.net = net;
+        nlm_traverse_files(&hint, nlmsvc_mark_host, NULL);
 }
 
 /*