for vs while

1 files changed, 1 insertions, 1 deletions

diff --git a/bio.c b/bio.c
index 17965d1..62675bf 100644
--- a/bio.c
+++ b/bio.c
@@ -39,7 +39,7 @@ getblk(uint dev, uint sector)
 
   acquire(&buf_table_lock);
 
-  while(1){
+  for(;;){
     for(b = bufhead.next; b != &bufhead; b = b->next)
       if((b->flags & (B_BUSY|B_VALID)) && b->dev == dev && b->sector == sector)
         break;