tree f2b5f79ee07f16abe92f27c6663dea4339d2f437
parent ea635c64e007061f6468ece5cc9cc62d41d4ecf2
author Julia Lawall <julia@diku.dk> 1274889279 +0200
committer Al Viro <viro@zeniv.linux.org.uk> 1275012189 -0400

fs: Add missing mutex_unlock

Add a mutex_unlock missing on the error path.  At other exists from the
function that return an error flag, the mutex is unlocked, so do the same
here.

The semantic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
expression E1;
@@

* mutex_lock(E1,...);
  <+... when != E1
  if (...) {
    ... when != E1
*   return ...;
  }
  ...+>
* mutex_unlock(E1,...);
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>