Re: [PATCH RFC] NFSD: fix cannot umounting mount points under pseudo root

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On Thu, Apr 30, 2015 at 07:52:25AM +1000, NeilBrown wrote:

> An alternative might be to stop using lookup_one_len, and use kern_path()
> instead.  Or kern_path_mountpoint if we don't want to cross a mountpoint.

NAK.  This is a monumentally bad idea - please, do not do it.  Not to mention
anything else, kern_path() is a _lot_ heavier, including much worse stack
footprint.
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