[git pull] vfs.git pile 1 - namei stuff

[Al Viro]

The following changes since commit b13baccc3850ca8b8cccbf8ed9912dbaa0fdf7f3:

  Linux 5.19-rc2 (2022-06-12 16:11:37 -0700)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs.git tags/pull-work.namei

for you to fetch changes up to 3bd8bc897161730042051cd5f9c6ed1e94cb5453:

  step_into(): move fetching ->d_inode past handle_mounts() (2022-07-06 13:16:07 -0400)

----------------------------------------------------------------
	RCU pathwalk cleanups.  Storing sampled ->d_seq of
the next dentry in nameidata simplifies life considerably,
especially if we delay fetching ->d_inode until step_into().

Signed-off-by: Al Viro <viro@xxxxxxxxxxxxxxxxxx>

----------------------------------------------------------------
Al Viro (10):
      __follow_mount_rcu(): verify that mount_lock remains unchanged
      namei: get rid of pointless unlikely(read_seqcount_retry(...))
      follow_dotdot{,_rcu}(): change calling conventions
      switch try_to_unlazy_next() to __legitimize_mnt()
      namei: move clearing LOOKUP_RCU towards rcu_read_unlock()
      namei: stash the sampled ->d_seq into nameidata
      step_into(): lose inode argument
      follow_dotdot{,_rcu}(): don't bother with inode
      lookup_fast(): don't bother with inode
      step_into(): move fetching ->d_inode past handle_mounts()

 fs/mount.h     |   1 -
 fs/namei.c     | 191 +++++++++++++++++++++++++--------------------------------
 fs/namespace.c |   2 +-
 3 files changed, 86 insertions(+), 108 deletions(-)