[PATCH] knfsd: simplify nlmsvc_invalidate_all

As a result of previous patches, the loop in nlmsvc_invalidate_all just sets
h_expires for all client/hosts to 0 (though does it in a very complicated
way).

This was possibly meant to trigger early garbage collection but half the time
'0' is in the future and so it infact delays garbage collection.

Pre-aging the 'hosts' is not really needed at this point anyway so we throw
out the loop and nlm_find_client which is no longer needed.

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, 1 insertions, 36 deletions

diff --git a/fs/lockd/host.c b/fs/lockd/host.c
index 3b55fe5e94a2..1bf384307d15 100644
--- a/fs/lockd/host.c
+++ b/fs/lockd/host.c
@@ -192,33 +192,6 @@ nlm_destroy_host(struct nlm_host *host)
 	kfree(host);
 }
 
-struct nlm_host *
-nlm_find_client(void)
-{
-	struct hlist_head *chain;
-	struct hlist_node *pos;
-
-	/* find a nlm_host for a client for which h_killed == 0.
-	 * and return it
-	 */
-	mutex_lock(&nlm_host_mutex);
-	for (chain = nlm_hosts; chain < nlm_hosts + NLM_HOST_NRHASH; ++chain) {
-		struct nlm_host *host;
-
-		hlist_for_each_entry(host, pos, chain, h_hash) {
-			if (host->h_server &&
-			    host->h_killed == 0) {
-				nlm_get_host(host);
-				mutex_unlock(&nlm_host_mutex);
-				return host;
-			}
-		}
-	}
-	mutex_unlock(&nlm_host_mutex);
-	return NULL;
-}
-
-				
 /*
  * Create the NLM RPC client for an NLM peer
  */
diff --git a/fs/lockd/svcsubs.c b/fs/lockd/svcsubs.c
index bb13a48210f5..a1c7c0848415 100644
--- a/fs/lockd/svcsubs.c
+++ b/fs/lockd/svcsubs.c
@@ -354,13 +354,11 @@ nlmsvc_free_host_resources(struct nlm_host *host)
 }
 
 /*
- * delete all hosts structs for clients
+ * Remove all locks held for clients
  */
 void
 nlmsvc_invalidate_all(void)
 {
-	struct nlm_host *host;
-
 	/* Release all locks held by NFS clients.
 	 * Previously, the code would call
 	 * nlmsvc_free_host_resources for each client in
@@ -368,10 +366,4 @@ nlmsvc_invalidate_all(void)
 	 * Now we just do it once in nlm_traverse_files.
 	 */
 	nlm_traverse_files(NULL, nlmsvc_is_client);
-
-	while ((host = nlm_find_client()) != NULL) {
-		host->h_expires = 0;
-		host->h_killed = 1;
-		nlm_release_host(host);
-	}
 }