Move kernel locking inside knote_fdclose() from finishdup() and

fdrelease(). This makes the upper layer of file descriptor closing
free of KERNEL_LOCK() when the process does not use kqueue.

The kernel locking around fdremove() and knote_fdclose() is no longer
needed because kqueue_register() checks if there has been a race with
file descriptor close. Moreover, the locking became ineffective against
these races when filterops callbacks were allowed to sleep.

OK anton@, mpi@

0 files changed, 0 insertions, 0 deletions