commit e0240674f5b30adf92714162cf51dabc43b17aa7
parent 7bb73cdbc78a1f0df07539125e681c084b66d876
Author: rsc <rsc>
Date: Mon, 27 Aug 2007 12:50:36 +0000
make kfree loop same as kalloc
Diffstat:
1 file changed, 5 insertions(+), 8 deletions(-)
diff --git a/kalloc.c b/kalloc.c
@@ -93,20 +93,17 @@ char*
kalloc(int n)
{
char *p;
- struct run *r, **rr;
+ struct run *r, **rp;
if(n % PAGE || n <= 0)
panic("kalloc");
acquire(&kalloc_lock);
-
- rr = &freelist;
- while(*rr){
- r = *rr;
+ for(rp=&freelist; (r=*rp) != 0; rp=&r->next){
if(r->len == n){
- *rr = r->next;
+ *rp = r->next;
release(&kalloc_lock);
- return (char*) r;
+ return (char*)r;
}
if(r->len > n){
r->len -= n;
@@ -114,9 +111,9 @@ kalloc(int n)
release(&kalloc_lock);
return p;
}
- rr = &(*rr)->next;
}
release(&kalloc_lock);
+
cprintf("kalloc: out of memory\n");
return 0;
}