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Message-Id: <E1G4Kpi-0001Os-AK@be1.lrz> Date: Sat, 22 Jul 2006 18:59:45 +0200 From: Bodo Eggert <7eggert@...tempel.de> To: "Horst H. von Brand" <vonbrand@....utfsm.cl>, Joshua Hudson <joshudson@...il.com>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org> Subject: Re: what is necessary for directory hard links Horst H. von Brand <vonbrand@....utfsm.cl> wrote: > Joshua Hudson <joshudson@...il.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 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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