Re: what is necessary for directory hard links

[Bodo Eggert <7eggert@elstempel.de>]

Horst H. von Brand <vonbrand@inf.utfsm.cl> wrote:

> Joshua Hudson <joshudson@gmail.com> wrote:
>> This patch is the sum total of all that I had to change in the kernel
>> VFS layer to support hard links to directories
> 
> Can't be done, as it creates the possibility of loops.

Don't do that then?

> The "only files can
> be hardlinked" idea makes garbage collection (== deleting of unreachable
> objects) simple: Just check the number of references.
> 
> Detecting unconnected subgraphs uses a /lot/ of memory; and much worse, you
> have to stop (almost) all filesystem activity while doing it.

In order to disconnect a directory, you'd have to empty it first, and after
emptying a directory, it won't be part of a loop. Maybe emtying is the
problem ...


This feature was implemented, and I asume it was removed for a reason.
Can somebody remember?
-- 
Ich danke GMX dafür, die Verwendung meiner Adressen mittels per SPF
verbreiteten Lügen zu sabotieren.

http://david.woodhou.se/why-not-spf.html