[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>

diff --git a/fs/lockd/host.c b/fs/lockd/host.c
index 3b55fe5..1bf3843 100644 (file)
--- 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 bb13a48..a1c7c08 100644 (file)
--- 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);
-       }
 }

diff --git a/include/linux/lockd/lockd.h b/include/linux/lockd/lockd.h
index 8c11456..1fcf936 100644 (file)
--- a/include/linux/lockd/lockd.h
+++ b/include/linux/lockd/lockd.h
@@ -45,8 +45,7 @@ struct nlm_host {
        unsigned short          h_proto;        /* transport proto */
        unsigned short          h_reclaiming : 1,
                                h_server     : 1, /* server side, not client side */
-                               h_inuse      : 1,
-                               h_killed     : 1;
+                               h_inuse      : 1;
        wait_queue_head_t       h_gracewait;    /* wait while reclaiming */
        struct rw_semaphore     h_rwsem;        /* Reboot recovery lock */
        u32                     h_state;        /* pseudo-state counter */
@@ -169,7 +168,6 @@ void                  nlm_rebind_host(struct nlm_host *);
 struct nlm_host * nlm_get_host(struct nlm_host *);
 void             nlm_release_host(struct nlm_host *);
 void             nlm_shutdown_hosts(void);
-extern struct nlm_host *nlm_find_client(void);
 extern void      nlm_host_rebooted(const struct sockaddr_in *, const char *, int, u32);
 struct nsm_handle *nsm_find(const struct sockaddr_in *, const char *, int);
 void             nsm_release(struct nsm_handle *);