Straight replacement of B_BUSY with a sleeping lock.

1 files changed, 3 insertions, 0 deletions

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: