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52f9ebbda9
Add a test which verifies that dentries in an encrypted directory are invalidated when an encryption key is added --- which should cause the plaintext filenames to be visible and accessible, replacing the encoded ciphertext filenames and any negative dentries for the plaintext names. This primarily tests for a bug which was fixed in the v4.5 kernel, plus a v4.6 fix for incorrect RCU usage in the earlier fix. Cc: linux-fscrypt@vger.kernel.org Signed-off-by: Eric Biggers <ebiggers@google.com> Reviewed-by: Eryu Guan <eguan@redhat.com> Signed-off-by: Eryu Guan <eguan@redhat.com>