selftests/filesystems: test covered mounts

Test that mount cycles are resolved and test that mount covers behave as
expected.

Link: https://patch.msgid.link/20261002-work-mount-cover-v1-3-232a8f52b43c@kernel.org
Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
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Christian Brauner 2026-10-02 16:14:29 +02:00
commit 3e78bf8433
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7 changed files with 2547 additions and 1 deletions