Re: [PATCH] fs: Work around NFS wreckage

[Thomas Gleixner]

On Thu, 13 Jan 2011, J. R. Okajima wrote:
> Thomas Gleixner:
> > The dcache scalability work broke NFS root filesystems.
> 	:::
> > Check for parent equal dentry and skip the nested lock to avoid the
> > deadlock. I'm sure this is the wrong fix, but at least it "works" :)
> 
> With this patch, can you unmount it cleanly?
> It skips incrementing d_count for both dentries.
> Do we need at least one?

Not sure, as we should not end up there at all I guess.
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