On Wed, Mar 20, 2019 at 11:39:09AM -0700, Eric Biggers wrote:
> From: Eric Biggers <[email protected]>
>
> Make various improvements to fscrypt dentry revalidation:
>
> - Don't try to handle the case where the per-directory key is removed,
> as this can't happen without the inode (and dentries) being evicted.
>
> - Flag ciphertext dentries rather than plaintext dentries, since it's
> ciphertext dentries that need the special handling.
>
> - Avoid doing unnecessary work for non-ciphertext dentries.
>
> - When revalidating ciphertext dentries, try to set up the directory's
> i_crypt_info to make sure the key is really still absent, rather than
> invalidating all negative dentries as the previous code did. An old
> comment suggested we can't do this for locking reasons, but AFAICT
> this comment was outdated and it actually works fine.
>
> Signed-off-by: Eric Biggers <[email protected]>
Looks good, applied.
- Ted
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