[PATCH] knfsd: add a callback for when last rpc thread finishes

nfsd has some cleanup that it wants to do when the last thread exits, and
there will shortly be some more.  So collect this all into one place and
define a callback for an rpc service to call when the service is about to be
destroyed.

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

1 files changed, 6 insertions, 1 deletions

diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c
index 44b8d9d4c18a..f5aee4c61676 100644
--- a/net/sunrpc/svc.c
+++ b/net/sunrpc/svc.c
@@ -26,7 +26,8 @@
  * Create an RPC service
  */
 struct svc_serv *
-svc_create(struct svc_program *prog, unsigned int bufsize)
+svc_create(struct svc_program *prog, unsigned int bufsize,
+           void (*shutdown)(struct svc_serv *serv))
 {
         struct svc_serv *serv;
         int vers;
@@ -39,6 +40,7 @@ svc_create(struct svc_program *prog, unsigned int bufsize)
         serv->sv_nrthreads = 1;
         serv->sv_stats     = prog->pg_stats;
         serv->sv_bufsz     = bufsize? bufsize : 4096;
+        serv->sv_shutdown  = shutdown;
         xdrsize = 0;
         while (prog) {
                 prog->pg_lovers = prog->pg_nvers-1;
@@ -91,6 +93,9 @@ svc_destroy(struct svc_serv *serv)
                                   sk_list);
                 svc_delete_socket(svsk);
         }
+        if (serv->sv_shutdown)
+                serv->sv_shutdown(serv);
+
         while (!list_empty(&serv->sv_permsocks)) {
                 svsk = list_entry(serv->sv_permsocks.next,
                                   struct svc_sock,