Re: Question on fscrypt_d_revalidate() and fstest generic/429

From	Richard Weinberger <richard@nod.at>
Newsgroups	linux.kernel
Subject	Re: Question on fscrypt_d_revalidate() and fstest generic/429
Date	2017-05-16 13:30 +0200
Message-ID	<tHIPU-4Yo-17@gated-at.bofh.it> (permalink)
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Al,

Am 16.05.2017 um 01:50 schrieb Al Viro:
> On Mon, May 15, 2017 at 09:51:03PM +0200, Richard Weinberger wrote:
> 
>>> I doubt it's the right solution to make fscrypt_d_revalidate() look at
>>> ->i_nlink, since ->d_revalidate() is meant to validate the filename, not the
>>> inode.  I think there is probably a VFS bug that is causing the dentries to not
>>> be freed.
>>
>> Not sure. Al? :-)
> 
> What's to tell VFS that they are garbage?  If your code doesn't do it,
> VFS has no way to know.  And I certainly agree that using ->d_revalidate()
> to trigger their unhashing is a bloody odd design; take it up with whoever
> had come up with it...

Not sure whether I understood your answer.
What is the preferred way to inform VFS that the dentry is no longer valid?

Thanks,
//richard

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Question on fscrypt_d_revalidate() and fstest generic/429 Richard Weinberger <richard@nod.at> - 2017-05-15 16:40 +0200
  Re: Question on fscrypt_d_revalidate() and fstest generic/429 Eric Biggers <ebiggers3@gmail.com> - 2017-05-15 21:50 +0200
    Re: Question on fscrypt_d_revalidate() and fstest generic/429 Richard Weinberger <richard@nod.at> - 2017-05-15 22:00 +0200
      Re: Question on fscrypt_d_revalidate() and fstest generic/429 Eric Biggers <ebiggers3@gmail.com> - 2017-05-16 01:30 +0200
        Re: Question on fscrypt_d_revalidate() and fstest generic/429 Richard Weinberger <richard@nod.at> - 2017-05-16 08:50 +0200
          Re: Question on fscrypt_d_revalidate() and fstest generic/429 Eric Biggers <ebiggers3@gmail.com> - 2017-05-17 00:10 +0200
            Re: Question on fscrypt_d_revalidate() and fstest generic/429 Richard Weinberger <richard@nod.at> - 2017-05-17 00:30 +0200
      Re: Question on fscrypt_d_revalidate() and fstest generic/429 Al Viro <viro@ZenIV.linux.org.uk> - 2017-05-16 02:00 +0200
        Re: Question on fscrypt_d_revalidate() and fstest generic/429 Richard Weinberger <richard@nod.at> - 2017-05-16 13:30 +0200

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