Messages in this thread | | | Date | Wed, 16 Jul 2003 15:21:43 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH] print_dev_t for 2.6.0-test1-mm |
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Andries Brouwer <aebr@win.tue.nl> wrote: > > > > Why do we need the 16:16 option? > > It is not very important, but major 0 is reserved, so if userspace > (or a filesystem) hands us a 32-bit device number, we have to > split that in some way, not 0+32. Life is easiest with 16+16. > (Now the major is nonzero, otherwise we had 8+8.) > Other choices lead to slightly more complicated code. >
Why would anyone hand the kernel a 32-bit device number? They're either 16 or 64, are they not?
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