more vfs stuff

Mostly vfsmount-related stuff; some leftovers from mnt_devname
(not all, BTW - there's more pending cleanups around nfs/super.c) plus pstore fix plus deadlock fix in pivot_root(). The really neat thing is that now we have no blocking on fs locks under namespace_sem - the only blocking stuff under it now is kmalloc(), which makes things much more robust. Please, pull from the usual place -
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6.git/ for-linus

More to follow tonight - I hoped to push assorted patches accumulated during the last cycle in this pile, but that'll have to wait until the next push.

Shortlog:
Al Viro (6):
kill simple_set_mnt()
vfs: split off vfsmount-related parts of vfs_kern_mount() fix deadlock in pivot_root()
change the locking order for namespace_sem don't pass 'mounting_here' flag to follow_down() lose 'mounting_here' argument in ->d_manage()

Josef Bacik (1):
fs: call security_d_instantiate in d_obtain_alias V2

Tony Luck (1):
Some fixes for pstore

Diffstat:

 Documentation/filesystems/vfs.txt |    6 +-
 fs/autofs4/root.c                 |    6 +-
 fs/dcache.c                       |    3 +
 fs/internal.h                     |    5 +-
 fs/namei.c                        |    9 +-
 fs/namespace.c                    |  292 +++++++++++++++++++++++--------------
 fs/nfsd/vfs.c                     |    2 +-
 fs/pstore/inode.c                 |  116 +++++++--------
 fs/super.c                        |   96 ++----------
 include/linux/dcache.h            |    2 +-
 include/linux/fs.h                |    1 -
 include/linux/namei.h             |    2 +-
 12 files changed, 271 insertions(+), 269 deletions(-)