Re: [git pull] vfs fixes

[Al Viro <viro@ZenIV.linux.org.uk>]

On Sun, Mar 30, 2014 at 09:33:07PM +0100, Al Viro wrote:
> Al, finally back to life and digging himself from under ~5e3 mails in l-k
> mailbox...

        Several fixes; a couple of fdget_pos()-related ones from Eric Biggers,
prepend_name() fix (bug was reported by many people, Imre and Jan being the
ones I'd been able to find addresses of), plus a series of fixes for bug
found by Max Kellermann - missing checks for false negatives from
__lookup_mnt() in fs/namei.c + switching mnt_hash to hlist, turning
the races between __lookup_mnt() and hash modifications into
false negatives from __lookup_mnt() (instead of hangs).

Please, pull from the usual place -
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs.git for-linus

Commit ID of that branch should be 7fc5aaa083922420e2dec5d985420cb5f959b1ce;
diffs are the same as what sat there since last Sunday, commit messages
got updated a bit.  Should've propagated by now...

Shortlog:
Al Viro (6):
      make prepend_name() work correctly when called with negative *buflen
      rcuwalk: recheck mount_lock after mountpoint crossing attempts
      resizable namespace.c hashes
      keep shadowed vfsmounts together
      don't bother with propagate_mnt() unless the target is shared
      switch mnt_hash to hlist

Eric Biggers (2):
      vfs: atomic f_pos access in llseek()
      vfs: Don't let __fdget_pos() get FMODE_PATH files

Diffstat:
 fs/dcache.c     |    4 +-
 fs/file.c       |   19 ++----
 fs/mount.h      |    4 +-
 fs/namei.c      |   29 ++++-----
 fs/namespace.c  |  177 ++++++++++++++++++++++++++++++++++++-------------------
 fs/pnode.c      |   26 ++++----
 fs/pnode.h      |    4 +-
 fs/read_write.c |    4 +-
 8 files changed, 155 insertions(+), 112 deletions(-)