Make the process_exit eventhandler run without Giant. Add Giant hooks

in the two consumers that need it.. processes using AIO and netncp.
Update docs.  Say that process_exec is called with Giant, but not to
depend on it.  All our consumers can handle it without Giant.

1 files changed, 2 insertions, 0 deletions

diff --git a/sys/netncp/ncp_subr.c b/sys/netncp/ncp_subr.c
index c15b985..b213733 100644
--- a/sys/netncp/ncp_subr.c
+++ b/sys/netncp/ncp_subr.c
@@ -85,6 +85,7 @@ ncp_at_exit(void *arg, struct proc *p)
 	struct ncp_conn *ncp, *nncp;
 	struct thread *td;
 
+	mtx_lock(&Giant);
 	FOREACH_THREAD_IN_PROC(p, td) {
 		if (ncp_conn_putprochandles(td) == 0)
 			continue;
@@ -100,6 +101,7 @@ ncp_at_exit(void *arg, struct proc *p)
 		}
 		ncp_conn_unlocklist(td);
 	}
+	mtx_unlock(&Giant);
 }
 
 int