Klaus Knopper:
> That makes absolutely sense to me now, since I had the same kind of crashes
> with negative dentry->d_count numbers.

All whiteout prefix bug was related to creating files and dirs.
Almost all people using unionfs on Intel processor would meet this kind
of crash.


> A Macro would waste some space for duplicate string constants, I would
> rather vote for something like
> 
> const char whiteout_prefix[] = ".wh.";

Contemporary compilers can optimize string constants and they will not
waste spaces. But I agree with you. Yours is better.


> Example (using /var/www, which is not empty):
        :::
> Other example:
        :::

I will try them later, both on my nfs case and your iso9660/tmpfs case.


Junjiro Okajima
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