[OpenAFS-devel] Splitting out old Linux code

[Russ Allbery]

Simon Wilkinson <sxw@inf.ed.ac.uk> writes:

> I'm in the process of making some fairly deep changes to the Linux cache
> manager, in the search of more performance, and I'm worried about the
> implications for the 2.4 kernel series. Rather than scattering the code
> with yet more #ifdefs, I was wondering how people would feel about the
> following proposal.

> We create a new directory, src/afs/LINUX24 which is used for builds on
> 2.4 and earlier kernels. This gets a copy of the current src/afs/ LINUX,
> stripped of everything that's 2.6 only. src/afs/LINUX then has all of
> the code that's only needed for 2.4 and earlier removed from it. This
> should both tidy up the Linux directories, and make it less likely that
> we'll inadvertently break 2.4 going forwards.

I'm wholeheartedly in favor, although I suspect we should probably
announce at the same time that Linux 2.4 support is, if not quite
deprecated, then at least frozen.  Once we fork off the 2.4 code, I
suspect we won't want to change it except for security fixes and similar
major bugs.

-- 
Russ Allbery (rra@stanford.edu)             <http://www.eyrie.org/~eagle/>