[PATCH] knfsd: lockd: make the nsm upcalls use the nsm_handle

This converts the statd upcalls to use the nsm_handle

This means that we only register each host once with statd, rather than
registering each host/vers/protocol triple.

Signed-off-by: Olaf Kirch <okir@suse.de>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

2 files changed, 18 insertions, 13 deletions

diff --git a/fs/lockd/mon.c b/fs/lockd/mon.c
index e27981403fbe..626b6c116a6d 100644
--- a/fs/lockd/mon.c
+++ b/fs/lockd/mon.c
@@ -30,7 +30,7 @@ u32				nsm_local_state;
  * Common procedure for SM_MON/SM_UNMON calls
  */
 static int
-nsm_mon_unmon(struct nlm_host *host, u32 proc, struct nsm_res *res)
+nsm_mon_unmon(struct nsm_handle *nsm, u32 proc, struct nsm_res *res)
 {
         struct rpc_clnt *clnt;
         int             status;
@@ -46,10 +46,10 @@ nsm_mon_unmon(struct nlm_host *host, u32 proc, struct nsm_res *res)
                 goto out;
         }
 
-        args.addr = host->h_addr.sin_addr.s_addr;
-        args.proto= (host->h_proto<<1) | host->h_server;
+        memset(&args, 0, sizeof(args));
+        args.addr = nsm->sm_addr.sin_addr.s_addr;
         args.prog = NLM_PROGRAM;
-        args.vers = host->h_version;
+        args.vers = 3;
         args.proc = NLMPROC_NSM_NOTIFY;
         memset(res, 0, sizeof(*res));
 
@@ -80,7 +80,7 @@ nsm_monitor(struct nlm_host *host)
         if (nsm->sm_monitored)
                 return 0;
 
-        status = nsm_mon_unmon(host, SM_MON, &res);
+        status = nsm_mon_unmon(nsm, SM_MON, &res);
 
         if (status < 0 || res.status != 0)
                 printk(KERN_NOTICE "lockd: cannot monitor %s\n", host->h_name);
@@ -99,16 +99,20 @@ nsm_unmonitor(struct nlm_host *host)
         struct nsm_res  res;
         int             status = 0;
 
-        dprintk("lockd: nsm_unmonitor(%s)\n", host->h_name);
         if (nsm == NULL)
                 return 0;
         host->h_nsmhandle = NULL;
 
-        if (!host->h_killed) {
-                status = nsm_mon_unmon(host, SM_UNMON, &res);
+        if (atomic_read(&nsm->sm_count) == 1
+         && nsm->sm_monitored && !nsm->sm_sticky) {
+                dprintk("lockd: nsm_unmonitor(%s)\n", host->h_name);
+
+                status = nsm_mon_unmon(nsm, SM_UNMON, &res);
                 if (status < 0)
-                        printk(KERN_NOTICE "lockd: cannot unmonitor %s\n", host->h_name);
-                nsm->sm_monitored = 0;
+                        printk(KERN_NOTICE "lockd: cannot unmonitor %s\n",
+                                        host->h_name);
+                else
+                        nsm->sm_monitored = 0;
         }
         nsm_release(nsm);
         return status;
@@ -171,9 +175,11 @@ xdr_encode_mon(struct rpc_rqst *rqstp, u32 *p, struct nsm_args *argp)
         p = xdr_encode_common(rqstp, p, argp);
         if (IS_ERR(p))
                 return PTR_ERR(p);
+
+        /* Surprise - there may even be room for an IPv6 address now */
         *p++ = argp->addr;
-        *p++ = argp->vers;
-        *p++ = argp->proto;
+        *p++ = 0;
+        *p++ = 0;
         *p++ = 0;
         rqstp->rq_slen = xdr_adjust_iovec(rqstp->rq_svec, p);
         return 0;
diff --git a/include/linux/lockd/sm_inter.h b/include/linux/lockd/sm_inter.h
index 1080bb6ae315..d93b074668ce 100644
--- a/include/linux/lockd/sm_inter.h
+++ b/include/linux/lockd/sm_inter.h
@@ -28,7 +28,6 @@ struct nsm_args {
         u32             prog;           /* RPC callback info */
         u32             vers;
         u32             proc;
-        u32             proto;          /* protocol (udp/tcp) plus server/client flag */
 };
 
 /*