1 files changed, 42 insertions, 0 deletions

diff --git a/fs/lockd/clntlock.c b/fs/lockd/clntlock.c
index d070b18e539d..0b45fd3a4bfd 100644
--- a/fs/lockd/clntlock.c
+++ b/fs/lockd/clntlock.c
@@ -41,6 +41,48 @@ struct nlm_wait {
 
 static LIST_HEAD(nlm_blocked);
 
+/**
+ * nlmclnt_init - Set up per-NFS mount point lockd data structures
+ * @nlm_init: pointer to arguments structure
+ *
+ * Returns pointer to an appropriate nlm_host struct,
+ * or an ERR_PTR value.
+ */
+struct nlm_host *nlmclnt_init(const struct nlmclnt_initdata *nlm_init)
+{
+        struct nlm_host *host;
+        u32 nlm_version = (nlm_init->nfs_version == 2) ? 1 : 4;
+        int status;
+
+        status = lockd_up(nlm_init->protocol);
+        if (status < 0)
+                return ERR_PTR(status);
+
+        host = nlmclnt_lookup_host((struct sockaddr_in *)nlm_init->address,
+                                   nlm_init->protocol, nlm_version,
+                                   nlm_init->hostname,
+                                   strlen(nlm_init->hostname));
+        if (host == NULL) {
+                lockd_down();
+                return ERR_PTR(-ENOLCK);
+        }
+
+        return host;
+}
+EXPORT_SYMBOL_GPL(nlmclnt_init);
+
+/**
+ * nlmclnt_done - Release resources allocated by nlmclnt_init()
+ * @host: nlm_host structure reserved by nlmclnt_init()
+ *
+ */
+void nlmclnt_done(struct nlm_host *host)
+{
+        nlm_release_host(host);
+        lockd_down();
+}
+EXPORT_SYMBOL_GPL(nlmclnt_done);
+
 /*
  * Queue up a lock for blocking so that the GRANTED request can see it
  */