Merge tag 'vfs-7.0-rc8.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

Merge tag 'vfs-7.0-rc8.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

Pull vfs fixes from Christian Brauner:
 "The kernfs rbtree is keyed by (hash, ns, name) where the hash
  is seeded with the raw namespace pointer via init_name_hash(ns).

  The resulting hash values are exposed to userspace through
  readdir seek positions, and the pointer-based ordering in
  kernfs_name_compare() is observable through entry order.

  Switch from raw pointers to ns_common::ns_id for both hashing
  and comparison.

  A preparatory commit first replaces all const void * namespace
  parameters with const struct ns_common * throughout kernfs, sysfs,
  and kobject so the code can access ns->ns_id. Also compare the
  ns_id when hashes match in the rbtree to handle crafted collisions.

  Also fix eventpoll RCU grace period issue and a cachefiles refcount
  problem"

* tag 'vfs-7.0-rc8.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
  kernfs: make directory seek namespace-aware
  kernfs: use namespace id instead of pointer for hashing and comparison
  kernfs: pass struct ns_common instead of const void * for namespace tags
  eventpoll: defer struct eventpoll free to RCU grace period
  cachefiles: fix incorrect dentry refcount in cachefiles_cull()