From 6670d3b5e084d9d900d2ea13e624e72e1e28f84c Mon Sep 17 00:00:00 2001
From: Frans Kaashoek <kaashoek@mit.edu>
Date: Sun, 11 Sep 2016 17:24:04 -0400
Subject: Straight replacement of B_BUSY with a sleeping lock.

---
 exec.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'exec.c')

diff --git a/exec.c b/exec.c
index d56ee1d..e968d2f 100644
--- a/exec.c
+++ b/exec.c
@@ -19,6 +19,8 @@ exec(char *path, char **argv)
   pde_t *pgdir, *oldpgdir;
 
   begin_op();
+
+  cprintf("exec %s\n", path);
   if((ip = namei(path)) == 0){
     end_op();
     return -1;
@@ -98,6 +100,7 @@ exec(char *path, char **argv)
   proc->tf->esp = sp;
   switchuvm(proc);
   freevm(oldpgdir);
+  cprintf("exec succeeded\n");
   return 0;
 
  bad:
-- 
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