SUNRPC: Ensure rpcauth_prune_expired() respects the nr_to_scan parameter

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

diff --git a/net/sunrpc/auth.c b/net/sunrpc/auth.c
index c40856f..73affb8 100644 (file)
--- a/net/sunrpc/auth.c
+++ b/net/sunrpc/auth.c
@@ -236,6 +236,8 @@ rpcauth_prune_expired(struct list_head *free, int nr_to_scan)
 
        list_for_each_entry_safe(cred, next, &cred_unused, cr_lru) {
 
+               if (nr_to_scan-- == 0)
+                       break;
                /*
                 * Enforce a 60 second garbage collection moratorium
                 * Note that the cred_unused list must be time-ordered.
@@ -255,11 +257,8 @@ rpcauth_prune_expired(struct list_head *free, int nr_to_scan)
                        get_rpccred(cred);
                        list_add_tail(&cred->cr_lru, free);
                        rpcauth_unhash_cred_locked(cred);
-                       nr_to_scan--;
                }
                spin_unlock(cache_lock);
-               if (nr_to_scan == 0)
-                       break;
        }
        return (number_cred_unused / 100) * sysctl_vfs_cache_pressure;
 }