Re: [PATCH 11/13] Always define MAX_RAW_MINORS as 65535 in userspace

Palmer Dabbelt
2015-09-17T03:08:30Z

On Tue, 15 Sep 2015 13:42:47 PDT (-0700), hpa@zytor.com wrote:
> On 09/14/2015 03:50 PM, Palmer Dabbelt wrote:
>> While I don't think this was ever meant to be exposed to userspace, if
>> anyone is using it then this will at least provide a correct (if
>> unlikely) definition.
>>
>> MAX_RAW_MINORS used to be used in the kernel, where it's been replaced
>> with CONFIG_MAX_RAW_MINORS.
>>
>> Note that there's a checkpatch.pl warning about a split config string
>> here, but I've left that alone.
>
> From a UAPI perspective I would think the right value would be 2^20.

Wow, I'm super surprised. For some reason I thought major/minor
numbers were 16 bits, but according to glibc I just have no idea what
I'm doing :).

Thanks for catching this!