Messages in this thread | | | From | (H. Peter Anvin) | Subject | Re: More on bigger kdev_t | Date | 11 Oct 1999 05:19:27 GMT |
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Followup to: <E11aPnP-00072I-00@the-village.bc.nu> By author: Alan Cox <alan@lxorguk.ukuu.org.uk> In newsgroup: linux.dev.kernel > > > So what is the best solution? > > Every other Unix OS is using 32bit dev_t. That gives easy NFS compatibility, > and provides enough space. >
Well, as we noticed before, we can export a 12/20 split over NFS v2 (I believe this is not an issue over NFS v3 or higher.) However, if we go to a 64-bit type now -- at least for the kernel-user space interface -- we greatly reduce the risk of backing ourselves into a corner that we have to deal with later.
However, I believe Andries already has kdev_t-as-a-pointer working, and in fact has a bunch of nice properties, which IMO means we might as well go 32/32 already now (with 12/20 for NFS v2 only.)
-hpa -- <hpa@transmeta.com> at work, <hpa@zytor.com> in private!
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