hostfs: convert hostfs to use the new mount API

[ Upstream commit cd140ce9 ]

Convert the hostfs filesystem to the new internal mount API as the old
one will be obsoleted and removed.  This allows greater flexibility in
communication of mount parameters between userspace, the VFS and the
filesystem.

See Documentation/filesystems/mount_api.txt for more information.

Signed-off-by: Hongbo Li <lihongbo22@huawei.com>
Link: https://lore.kernel.org/r/20240530120111.3794664-1-lihongbo22@huawei.com


Signed-off-by: Christian Brauner <brauner@kernel.org>
Stable-dep-of: 60a60024 ("hostfs: fix string handling in __dentry_name()")
Signed-off-by: Sasha Levin <sashal@kernel.org>