[PATCH] knfsd: separate out some parts of nfsd_svc, which start nfs servers

Separate out the code for creating a new service, and for creating initial
sockets.

Some of these new functions will have multiple callers soon.

[akpm@osdl.org: cleanups]
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c
index 140e3a2d1b9f89a0d5f7bbf58b56287c028def82..5d473d8f06305378b196b5c3e6a8befacbf568f5 100644 (file)
--- a/fs/nfsd/nfssvc.c
+++ b/fs/nfsd/nfssvc.c
@@ -195,6 +195,52 @@ void nfsd_reset_versions(void)
        }
 }
 
+static int nfsd_create_serv(void)
+{
+       int err = 0;
+       lock_kernel();
+       if (nfsd_serv) {
+               nfsd_serv->sv_nrthreads++;
+               unlock_kernel();
+               return 0;
+       }
+
+       atomic_set(&nfsd_busy, 0);
+       nfsd_serv = svc_create(&nfsd_program, NFSD_BUFSIZE,
+                              nfsd_last_thread);
+       if (nfsd_serv == NULL)
+               err = -ENOMEM;
+       else
+               nfsd_serv->sv_nrthreads++;
+       unlock_kernel();
+       do_gettimeofday(&nfssvc_boot);          /* record boot time */
+       return err;
+}
+
+static int nfsd_init_socks(int port)
+{
+       int error;
+       if (!list_empty(&nfsd_serv->sv_permsocks))
+               return 0;
+
+       error = svc_makesock(nfsd_serv, IPPROTO_UDP, port);
+       if (error < 0)
+               return error;
+       error = lockd_up(IPPROTO_UDP);
+       if (error < 0)
+               return error;
+
+#ifdef CONFIG_NFSD_TCP
+       error = svc_makesock(nfsd_serv, IPPROTO_TCP, port);
+       if (error < 0)
+               return error;
+       error = lockd_up(IPPROTO_TCP);
+       if (error < 0)
+               return error;
+#endif
+       return 0;
+}
+
 int
 nfsd_svc(unsigned short port, int nrservs)
 {
@@ -216,32 +262,17 @@ nfsd_svc(unsigned short port, int nrservs)
        error = nfs4_state_start();
        if (error<0)
                goto out;
-       if (!nfsd_serv) {
-               nfsd_reset_versions();
-
-               atomic_set(&nfsd_busy, 0);
-               error = -ENOMEM;
-               nfsd_serv = svc_create(&nfsd_program, NFSD_BUFSIZE,
-                                      nfsd_last_thread);
-               if (nfsd_serv == NULL)
-                       goto out;
-               error = svc_makesock(nfsd_serv, IPPROTO_UDP, port);
-               if (error < 0)
-                       goto failure;
-               error = lockd_up(IPPROTO_UDP);
-               if (error < 0)
-                       goto failure;
-#ifdef CONFIG_NFSD_TCP
-               error = svc_makesock(nfsd_serv, IPPROTO_TCP, port);
-               if (error < 0)
-                       goto failure;
-               error = lockd_up(IPPROTO_TCP);
-               if (error < 0)
-                       goto failure;
-#endif
-               do_gettimeofday(&nfssvc_boot);          /* record boot time */
-       } else
-               nfsd_serv->sv_nrthreads++;
+
+       nfsd_reset_versions();
+
+       error = nfsd_create_serv();
+
+       if (error)
+               goto out;
+       error = nfsd_init_socks(port);
+       if (error)
+               goto failure;
+
        nrservs -= (nfsd_serv->sv_nrthreads-1);
        while (nrservs > 0) {
                nrservs--;