K 10
svn:author
V 3
bms
K 8
svn:date
V 27
2004-07-05T02:51:32.000000Z
K 7
svn:log
V 443
Locking cleanup for rl(4).
 - Eliminate the use of a recursive mutex.
 - Mark the driver INTR_MPSAFE.

This work is incomplete and will be refined in a future commit.
 - Most notably, _locked() variants of entry points need to be introduced.
 - The mii upcall/downcall may still be racy.
 - Add a stubbed-out guard against racing rl_detach() for the time being.

Tested on:	UP, debug.mpsafenet && !debug.mpsafenet
Reviewed by:	silence on -net

END