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This fixes kmem_malloc/kmem_free (and malloc/free of objects of > 8K).

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A page index was calculated incorrectly in vm_kern, and vm_object_page_remove
removed pages that should not have been.
This commit is contained in:
John Dyson 1996-04-24 04:16:45 +00:00
parent 1f3a4e3ffa
commit 0891ef4c9a
2 changed files with 11 additions and 8 deletions
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4
sys/vm/vm_kern.c
View File

@ -61,7 +61,7 @@
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*
* $Id: vm_kern.c,v 1.21 1996/01/19 03:59:48 dyson Exp $
* $Id: vm_kern.c,v 1.22 1996/01/31 12:05:52 davidg Exp $
*/
/*
@ -314,7 +314,7 @@ kmem_malloc(map, size, waitflag)
panic("kmem_malloc: kmem_map too small");
return (0);
}
offset = addr - vm_map_min(kmem_map);
offset = addr - VM_MIN_KERNEL_ADDRESS;
vm_object_reference(kmem_object);
vm_map_insert(map, kmem_object, offset, addr, addr + size,
VM_PROT_ALL, VM_PROT_ALL, 0);

15
sys/vm/vm_object.c
View File

@ -61,7 +61,7 @@
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*
* $Id: vm_object.c,v 1.66 1996/03/28 04:53:26 dyson Exp $
* $Id: vm_object.c,v 1.67 1996/03/29 06:28:48 davidg Exp $
*/
/*
@ -1162,12 +1162,14 @@ vm_object_page_remove(object, start, end, clean_only)
if (size > 4 || size >= object->size / 4) {
for (p = object->memq.tqh_first; p != NULL; p = next) {
next = p->listq.tqe_next;
if (p->wire_count != 0) {
vm_page_protect(p, VM_PROT_NONE);
p->valid = 0;
continue;
}
if ((start <= p->pindex) && (p->pindex < end)) {
if (p->wire_count != 0) {
vm_page_protect(p, VM_PROT_NONE);
p->valid = 0;
continue;
}
s = splhigh();
if ((p->flags & PG_BUSY) || p->busy) {
p->flags |= PG_WANTED;
@ -1176,6 +1178,7 @@ vm_object_page_remove(object, start, end, clean_only)
goto again;
}
splx(s);
if (clean_only) {
vm_page_test_dirty(p);
if (p->valid & p->dirty)