Merge tag 'fscache-fixes-20220413' of...

Merge tag 'fscache-fixes-20220413' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs

Pull fscache fixes from David Howells:
 "Here's a collection of fscache and cachefiles fixes and misc small
  cleanups. The two main fixes are:

   - Add a missing unmark of the inode in-use mark in an error path.

   - Fix a KASAN slab-out-of-bounds error when setting the xattr on a
     cachefiles volume due to the wrong length being given to memcpy().

  In addition, there's the removal of an unused parameter, removal of an
  unused Kconfig option, conditionalising a bit of procfs-related stuff
  and some doc fixes"

* tag 'fscache-fixes-20220413' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs:
  fscache: remove FSCACHE_OLD_API Kconfig option
  fscache: Use wrapper fscache_set_cache_state() directly when relinquishing
  fscache: Move fscache_cookies_seq_ops specific code under CONFIG_PROC_FS
  fscache: Remove the cookie parameter from fscache_clear_page_bits()
  docs: filesystems: caching/backend-api.rst: fix an object withdrawn API
  docs: filesystems: caching/backend-api.rst: correct two relinquish APIs use
  cachefiles: Fix KASAN slab-out-of-bounds in cachefiles_set_volume_xattr
  cachefiles: unmark inode in use in error path