Merge branch 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6

* 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6:
  SUNRPC: Fix potential race in put_rpccred()
  SUNRPC: Fix rpcauth_prune_expired
  NFS: Convert nfs_attr_generation_counter into an atomic_long
  SUNRPC: Respond promptly to server TCP resets

1 files changed, 10 insertions, 8 deletions

diff --git a/net/sunrpc/auth.c b/net/sunrpc/auth.c
index 436bf1b4b76c..cb216b2df666 100644
--- a/net/sunrpc/auth.c
+++ b/net/sunrpc/auth.c
@@ -228,19 +228,21 @@ static int
 rpcauth_prune_expired(struct list_head *free, int nr_to_scan)
 {
         spinlock_t *cache_lock;
-        struct rpc_cred *cred;
+        struct rpc_cred *cred, *next;
         unsigned long expired = jiffies - RPC_AUTH_EXPIRY_MORATORIUM;
 
-        while (!list_empty(&cred_unused)) {
-                cred = list_entry(cred_unused.next, struct rpc_cred, cr_lru);
+        list_for_each_entry_safe(cred, next, &cred_unused, cr_lru) {
+
+                /* Enforce a 60 second garbage collection moratorium */
+                if (time_in_range(cred->cr_expire, expired, jiffies) &&
+                    test_bit(RPCAUTH_CRED_HASHED, &cred->cr_flags) != 0)
+                        continue;
+
                 list_del_init(&cred->cr_lru);
                 number_cred_unused--;
                 if (atomic_read(&cred->cr_count) != 0)
                         continue;
-                /* Enforce a 5 second garbage collection moratorium */
-                if (time_in_range(cred->cr_expire, expired, jiffies) &&
-                    test_bit(RPCAUTH_CRED_UPTODATE, &cred->cr_flags) != 0)
-                        continue;
+
                 cache_lock = &cred->cr_auth->au_credcache->lock;
                 spin_lock(cache_lock);
                 if (atomic_read(&cred->cr_count) == 0) {
@@ -453,7 +455,7 @@ need_lock:
         }
         if (test_bit(RPCAUTH_CRED_UPTODATE, &cred->cr_flags) == 0)
                 rpcauth_unhash_cred(cred);
-        else if (test_bit(RPCAUTH_CRED_HASHED, &cred->cr_flags) != 0) {
+        if (test_bit(RPCAUTH_CRED_HASHED, &cred->cr_flags) != 0) {
                 cred->cr_expire = jiffies;
                 list_add_tail(&cred->cr_lru, &cred_unused);
                 number_cred_unused++;