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:
  nfs4: The difference of 2 pointers is ptrdiff_t
  nfs: testing the wrong variable
  nfs: handle lock context allocation failures in nfs_create_request
  Fixed Regression in NFS Direct I/O path