Messages in this thread | | | Subject | Re: [NFS] Re: problems with reiserfs + nfs using 2.4.2-pre4 | From | Trond Myklebust <> | Date | 20 Feb 2001 10:44:07 +0100 |
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>>>>> " " == Roman Zippel <zippel@fh-brandenburg.de> writes:
> Hi, On Tue, 20 Feb 2001, Neil Brown wrote:
>> 2/ lookup("..").
> A small question: Why exactly is this needed?
Short answer: the existence of 'rename' makes it necessary, since it means that the directory path is volatile as far as the client is concerned.
IIRC several NFS implementations (not Linux though) rely on being able to walk back up the directory tree in order to discover the path at any given moment.
Under Linux, our reliance on dentries doesn't allow for directory paths to be volatile, so we don't support it. Instead we end up having to support aliased directories.
Cheers, Trond - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.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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