Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Pull VFS fixes from Al Viro:
 "Several fixes, mostly for regressions in the last pile.  Howeover,
  prepend_path() forgetting to reininitalize dentry/vfsmount is in 3.12
  as well and qib_fs had been leaking all along..."

The unpaired RCU lock issue was also independently reported by Dave
Jones with his fuzzer tool..

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  qib_fs: fix (some) dcache abuses
  prepend_path() needs to reinitialize dentry/vfsmount/mnt on restarts
  fix unpaired rcu lock in prepend_path()
  locks: missing unlock on error in generic_add_lease()
  aio: checking for NULL instead of IS_ERR