On 15 Mar 2008, at 19:29, Marc Dionne wrote:
As for F9, I just tried building OpenAFS with a F9 kernel, but this
currently fails because of GPL only symbols that get dragged in by
some kernel debugging options (as discussed in another thread):
- lock statistics brings in mutex_lock_nested() which is GPL
Yes - this stopped me in my tracks last time I tried some F9/rawhide
builds (at that point against 2.6.24). There's not much we can do
when mutexes aren't available.
- lockdep brings in some rcu GPL symbols
I think we can fix this, by adding a configure test that checks if
rcu_read_lock is available to us, and just disables the code in
osi_keyring_init() that uses the task list to set __key_type_keyring
if it isn't (On 2.6.24, key_type_keyring is exported, so gets picked
up by weak reference). I started on this work, but never completed it
as I couldn't find a shipping kernel that had this problem, but still
let us use mutexes!
It looks like there may also be a problem with
afs_osi_TraverseProcTable (in the GCPags code).
These will probably be disabled once F9 is released,
My understanding is that the release kernel won't have these
debugging options enabled, yes.
Cheers,
Simon.
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