Misc vfs code clean

Yan Hong (8):
fs/namespace.c: introduce helper function path_unmounted() fs/namespace.c: remove unused macro MNT_WRITER_UNDERFLOW_LIMIT fs/namespace.c: trivial code clean
fs/namespace.c: check permission early in sys_[u]mount fs/namei.c: introduce macro AT_FDINV
fs/inode.c: call alloc_inode() in new_inode() directly fs/inode.c: remove outstanding spin lock prefetch
vfs: misc comment clean

 fs/dcache.c           |   11 ++++-----
 fs/inode.c            |   13 +++++------
 fs/namei.c            |   13 ++++++-----
 fs/namespace.c        |   59 ++++++++++++++++++++-----------------------------
 include/linux/fcntl.h |    2 ++
 5 files changed, 43 insertions(+), 55 deletions(-)

1.7.9.5