[git pull] ->mount() regression fixes for cifs

[Al Viro <viro-3bDd1+5oDREiFSDQTTA3OLVCufUGDwFn@public.gmane.org>]

> > Al, what is the status of your patchset? Note, that you can add my
> > "Acked-by: Pavel Shilovsky <piastryyy-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>" tag as well if you
> > need it.
> > 
> 
> Yes, I've looked over the set and it looks good to me. Nice cleanup,
> Al. You can add my:
> 
> Reviewed-by: Jeff Layton <jlayton-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>

OK...  The patchset fixes breakage that got into cifs ->mount() since
cifs had started to play with shared superblocks - sget() races, leaks,
etc.  Commit dates are recent due to added Acked-by and Reviewed-by;
other than that, it's an exact copy of the stuff that sat in for-next.
What is the proper way to deal with such situations, BTW?  I know that
you seriously dislike being asked to pull just-created commits, but
the normal reasons do not apply in this case...  Please, pull from
the usual place -
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6.git/ for-linus

Shortlog:
Al Viro (15):
      take bdi setup/destruction into cifs_mount/cifs_umount
      cifs: double free on mount failure
      cifs: don't leak nls on mount failure
      cifs: don't pass superblock to cifs_mount()
      cifs: leak on mount if we share superblock
      cifs: allocate mountdata earlier
      cifs: initialize ->tlink_tree in cifs_setup_cifs_sb()
      sanitize cifs_umount() prototype
      cifs: pull cifs_mount() call up
      cifs: move cifs_umount() call into ->kill_sb()
      cifs: pull freeing mountdata/dropping nls/freeing cifs_sb into cifs_umount()
      cifs: close sget() races
      cifs: more breakage on mount failures
      cifs: tidy cifs_do_mount() up a bit
      cifs: propagate errors from cifs_get_root() to mount(2)

Diffstat:
 fs/cifs/cifs_fs_sb.h |    1 +
 fs/cifs/cifsfs.c     |  156 +++++++++++++++++++++-----------------------------
 fs/cifs/cifsproto.h  |    8 +-
 fs/cifs/connect.c    |   49 +++++++++-------
 4 files changed, 98 insertions(+), 116 deletions(-)