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:
  NFSv4: fix delegated locking
  NFS: Ensure that the WRITE and COMMIT RPC calls are always uninterruptible
  NFS: Fix a race with the new commit code
  NFS: Ensure that writeback_single_inode() calls write_inode() when syncing
  NFS: Fix the mode calculation in nfs_find_open_context
  NFSv4: Fall back to ordinary lookup if nfs4_atomic_open() returns EISDIR