lockd: posix_test_lock() should not call locks_copy_lock()

The caller of posix_test_lock() should never need to look at the lock
private data, so do not copy that information. This also means that there
is no need to call the fl_release_private methods.

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

1 files changed, 13 insertions, 5 deletions

diff --git a/fs/locks.c b/fs/locks.c
index 231b23c12c3d..c83b5dbe0ed9 100644
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -239,17 +239,25 @@ static void locks_copy_private(struct file_lock *new, struct file_lock *fl)
 /*
  * Initialize a new lock from an existing file_lock structure.
  */
-void locks_copy_lock(struct file_lock *new, struct file_lock *fl)
+static void __locks_copy_lock(struct file_lock *new, const struct file_lock *fl)
 {
-        locks_release_private(new);
-
         new->fl_owner = fl->fl_owner;
         new->fl_pid = fl->fl_pid;
-        new->fl_file = fl->fl_file;
+        new->fl_file = NULL;
         new->fl_flags = fl->fl_flags;
         new->fl_type = fl->fl_type;
         new->fl_start = fl->fl_start;
         new->fl_end = fl->fl_end;
+        new->fl_ops = NULL;
+        new->fl_lmops = NULL;
+}
+
+void locks_copy_lock(struct file_lock *new, struct file_lock *fl)
+{
+        locks_release_private(new);
+
+        __locks_copy_lock(new, fl);
+        new->fl_file = fl->fl_file;
         new->fl_ops = fl->fl_ops;
         new->fl_lmops = fl->fl_lmops;
 
@@ -686,7 +694,7 @@ posix_test_lock(struct file *filp, struct file_lock *fl,
                         break;
         }
         if (cfl) {
-                locks_copy_lock(conflock, cfl);
+                __locks_copy_lock(conflock, cfl);
                 unlock_kernel();
                 return 1;
         }