for vs while

db8fb62e · rsc · 236d3369 · db8fb62e · db8fb62e · db8fb62e
--- 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;

--- a/bootmain.c
+++ b/bootmain.c
@@ -58,7 +58,7 @@ cmain(void)
 bad:
  outw(0x8A00, 0x8A00);
  outw(0x8A00, 0x8E00);
-  while(1)
+  for(;;)
    ;
 }


--- a/fs.c
+++ b/fs.c
@@ -479,7 +479,7 @@ namei(char *path, int mode, uint *ret_off, char **ret_last, struct inode **ret_i
  while(*cp == '/')
    cp++;

-  while(1){
+  for(;;){
    if(*cp == '\0'){
      if(mode == NAMEI_LOOKUP)
        return dp;

--- a/init.c
+++ b/init.c
@@ -20,7 +20,7 @@ main(void)
  dup(0);
  dup(0);

-  while(1){
+  for(;;){
    pid = fork();
    if(pid < 0){
      puts("init: fork failed\n");

--- a/syscall.c
+++ b/syscall.c
@@ -62,7 +62,7 @@ checkstring(uint s)
  char c;
  int len = 0;

-  while(1){
+  for(;;){
    if(fetchbyte(curproc[cpu()], s, &c) < 0)
      return -1;
    if(c == '\0')