CVS commit: [vmlocking] src/sys/kern

[Andrew Doran <ad%netbsd.org@localhost>]

Module Name:    src
Committed By:   ad
Date:           Fri Apr  6 12:26:44 UTC 2007

Modified Files:
        src/sys/kern [vmlocking]: kern_mutex.c

Log Message:
- Blocking in order to avoid deadlocking against the kernel_lock turns
  out to be not so good, since it puts a lot of back pressure onto other
  locks. Instead, just drop kernel_lock and re-acquire it when returning
  from mutex_vector_exit. In the LOCKDEBUG case, continue to block as it
  helps to expose locking bugs.
- Allow NODEBUG mutexes to be spin mutexes, also. To be revisited.


To generate a diff of this commit:
cvs rdiff -r1.11.2.3 -r1.11.2.4 src/sys/kern/kern_mutex.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.