Re: [PATCH] print_dev_t for 2.6.0-test1-mm

From: Andries Brouwer (
Date: Thu Jul 17 2003 - 20:05:58 EST

On Thu, Jul 17, 2003 at 05:04:45PM -0700, Joel Becker wrote:

> Yes, but there is a nice simplicity in saying filesystems that
> support 64bit device numbers get the expanded space, and filesystems
> that cannot are limited to 16bits. Most modern systems would have an
> updated set of filesystems. All pre-existing filesystems have only
> 16bit device numbers. All new mknod64() calls will only work on
> filesystems that can store 64bits.

You are an optimist.
My transition is much slower - I am a slow kind of person.

There is no flag day. The kernel must be updated, glibc must be
updated, user space software must be updated. A long process
that will take years. Indeed, so far we have not succeeded in
updating the kernel, and eight years went by.

Filesystems? Last I looked reiserfs handled 32 bits.

Really, we need the three stages - if the middle 32-bit stage
is absent too much software breaks. We must go forward slowly.


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