[git pull] root filesystem type handling series

[Al Viro]

	Teaching init/do_mounts.c to handle non-block filesystems, hopefully
preventing even more special-cased kludges (such as root=/dev/nfs, etc.)

The following changes since commit e73f0f0ee7541171d89f2e2491130c7771ba58d3:

  Linux 5.14-rc1 (2021-07-11 15:07:40 -0700)

are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs.git work.init

for you to fetch changes up to 6e7c1770a212239e88ec01ddc7a741505bfd10e5:

  fs: simplify get_filesystem_list / get_all_fs_names (2021-08-23 01:25:40 -0400)

----------------------------------------------------------------
Christoph Hellwig (3):
      init: split get_fs_names
      init: allow mounting arbitrary non-blockdevice filesystems as root
      fs: simplify get_filesystem_list / get_all_fs_names

 fs/filesystems.c   | 27 ++++++++++------
 include/linux/fs.h |  2 +-
 init/do_mounts.c   | 90 +++++++++++++++++++++++++++++++++++++++---------------
 3 files changed, 83 insertions(+), 36 deletions(-)