[git pull] vfs.git fixes

From: Al Viro
Date: Thu Mar 15 2018 - 21:41:12 EST


Backport-friendly part of lock_parent() race fix, a fix for assumption
in the heurisic used by path_connected() that is not true on NFS and livelock
fixes for d_alloc_parallel().

The following changes since commit 91ab883eb21325ad80f3473633f794c78ac87f51:

Linux 4.16-rc2 (2018-02-18 17:29:42 -0800)

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 95dd77580ccd66a0da96e6d4696945b8cea39431:

fs: Teach path_connected to handle nfs filesystems with multiple roots. (2018-03-15 18:48:38 -0400)

----------------------------------------------------------------
Al Viro (1):
lock_parent() needs to recheck if dentry got __dentry_kill'ed under it

Eric W. Biederman (1):
fs: Teach path_connected to handle nfs filesystems with multiple roots.

Will Deacon (2):
fs: dcache: Avoid livelock between d_alloc_parallel and __d_add
fs: dcache: Use READ_ONCE when accessing i_dir_seq

fs/dcache.c | 21 ++++++++++++++++-----
fs/namei.c | 5 +++--
fs/nfs/super.c | 2 ++
include/linux/fs.h | 1 +
4 files changed, 22 insertions(+), 7 deletions(-)