Re: [PATCH 1/2] vfs: make real_lookup do dentry revalidation with

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On Wed, Oct 14, 2009 at 10:34:12AM +0800, Ian Kent wrote:
> Some time ago Christoph suggested registering both autofs and autofs4
> but I'm not sure about that since both modules have always only
> registered autofs as the file system name.

Oops, I didn't notice that.

> We can add a MODULE_ALIAS() to the module source but that doesn't
> completely work, I think because the user space tools then don't get the
> directory right. Changing the user space configuration is also
> problematic because booting from a kernel with and without would require
> a configuration change every time.
> 
> The obvious simple solution would be to use symlinks to make the
> directory and module appear to be present, set about a process of user
> awareness and remove them after some pre-defined number of subsequent
> releases but I'm not sure how that approach would be received? We could
> even write a module stub that issues a warning message to syslog and
> then loads the autofs module but I haven't tried that yet.
> 
> Please, folks, some suggestions.

Just build two modules using the same source code?  That quite ugly, but
if the userspace is really that messed up I can't think of any better
idea.

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