Re: RFC: renameat(): Add a RENAME_REMOVE flag to unlink hardlinks

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On Sat, Nov 22, 2014 at 01:29:05AM +0000, Pádraig Brady wrote:

> > I assume that VFS can handle this correctly if it wants to.
> 
> I was assuming there was a way to distinguish directory entries,
> and that's what should be checked first, which is what my
> psuedo code patch attempted to show.

There isn't, in general.  Sure, if you get the same struct dentry * from
both lookups, it's the same one.  But it's not guaranteed to be true on
every fs out there if those are non-directories (and for directories there's
no multiple hardlinks in the first place).
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