Re: autofs4 looks up wrong path element when ghosting is enabled

[Jeff Moyer]

==> Regarding Re: autofs4 looks up wrong path element when ghosting is enabled; Ian Kent <raven@xxxxxxxxxx> adds:

raven> So to resolve this we need to ignore negative and unhashed dentries
raven> when checking if directory dentry is empty.
>>
raven> Please test this patch and let me know how you go.
>> OK, I've finally got 'round to testing your patch.  It does fix the test
>> case I was using.  My only concern is the potential for regressions.
>> I'll try making sure all of my various maps still work as advertised.

raven> I've spotted a regression with this patch.  It doesn't stop autofs
raven> from appearing to function correctly. It causes mount callbacks when
raven> they shouldn't made. So it seems that there is a case when an autofs
raven> directory is, as yet unhashed, but should be used.

I'm not sure I follow.  What do you mean it doesn't stop autofs from
*appearing* to function correctly?  Do you have a reproducer that fails?

-Jeff
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