John Burton wrote:
Hmmm... do "Open Source" modules have the same problem? Do these
"wholesale gratuitous changes" occur during minor revision changes or
major version changes? Major version changes in most software change the
API, while minor revisions do not. Are the kernel modules not consistent
with this?
The kernel has a stable user space API and volatile in-kernel modules
interfaces API. The reasons are outlined in
http://lxr.linux.no/linux/Documentation/stable_api_nonsense.txt
For free and open source code (including but not limited to driver
modules) that is included within the upstream kernel, this presents no
problems since whenever API changes occur, whoever is making the API
change can go ahead and fix all the consumers of the API.
Linux kernel doesn't follow the traditional stable vs unstable tree
development model in recent 2.6 kernel releases. Discussions on the
reason for the change are outlined in many places including
http://lwn.net/Articles/94386/
Rahul
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