[git pull] vfs fixes

[Al Viro]

	statx followup fixes, fix for a nasty corner case in path_init()
leaving path.dentry in RCU mode pointing to a dentry without DCACHE_RCUACCESS
and a fix for stack-smashing on alpha.

The following changes since commit c02ed2e75ef4c74e41e421acb4ef1494671585e8:

  Linux 4.11-rc4 (2017-03-26 14:15:16 -0700)

are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs.git for-linus

for you to fetch changes up to 0b1367305acc8e8706e13aa4c6766a747cf489d4:

  statx: Include a mask for stx_attributes in struct statx (2017-04-02 12:27:59 -0400)

----------------------------------------------------------------
Al Viro (2):
      path_init(): make sure that nd->path.dentry freeing will be RCU-delayed
      alpha: fix stack smashing in old_adjtimex(2)

Darrick J. Wong (1):
      xfs: report crtime and attribute flags to statx

David Howells (3):
      ext4: Add statx support
      statx: Reserve the top bit of the mask for future struct expansion
      statx: Include a mask for stx_attributes in struct statx

Eric Biggers (4):
      Documentation/filesystems: fix documentation for ->getattr()
      statx: reject unknown flags when using NULL path
      statx: remove incorrect part of vfs_statx() comment
      statx: optimize copy of struct statx to userspace

 Documentation/filesystems/Locking |  3 +-
 Documentation/filesystems/porting |  6 +++
 Documentation/filesystems/vfs.txt |  3 +-
 arch/alpha/kernel/osf_sys.c       |  2 +-
 fs/ext4/ext4.h                    |  1 +
 fs/ext4/file.c                    |  2 +-
 fs/ext4/inode.c                   | 41 +++++++++++++++++--
 fs/ext4/namei.c                   |  2 +
 fs/ext4/symlink.c                 |  3 ++
 fs/namei.c                        | 11 +++--
 fs/stat.c                         | 86 ++++++++++++++++++---------------------
 fs/xfs/xfs_iops.c                 | 14 +++++++
 include/linux/stat.h              |  1 +
 include/uapi/linux/stat.h         |  5 ++-
 samples/statx/test-statx.c        | 12 ++++--
 15 files changed, 128 insertions(+), 64 deletions(-)