Re: Device Naming under Linux [Long]

Riley Williams (rhw@bigfoot.com)
Wed, 22 Apr 1998 11:17:12 +0100 (BST)


Hi there.

>> But you are still limited to 8 bits for the major number. devices.txt
>> tells me that half the available numbers are "in use" (either
>> officially allocated or reserved for local/experimental use). How long
>> before we hit the 8 bit limit?

> That's a point worth considering, but take a look at the number of major
> device numbers used for tty's alone; Suppose we collapsed all the major
> numbers for different tty open blocking policies into one major number,
> and expressed all these policies in part of a 24 bit minor number? Are
> there any other devices with more than their fair share of major
> numbers?

The IDE device drivers? Memory says there's four different major numbers
allocated to them...

Best wishes from Riley.

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu