diff options
Diffstat (limited to 'sys/vm/vm_object.c')
| -rw-r--r-- | sys/vm/vm_object.c | 35 |
1 files changed, 34 insertions, 1 deletions
diff --git a/sys/vm/vm_object.c b/sys/vm/vm_object.c index 3aee15361b98..30f26c9c46a2 100644 --- a/sys/vm/vm_object.c +++ b/sys/vm/vm_object.c @@ -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 1.100 1997/11/07 09:21:00 phk Exp $ + * $Id: vm_object.c,v 1.101 1997/11/18 11:02:19 bde Exp $ */ /* @@ -359,6 +359,15 @@ vm_object_deallocate(object) */ object->flags |= OBJ_DEAD; + if (object->type == OBJT_VNODE) { + struct vnode *vp = object->handle; + if (vp->v_flag & VVMIO) { + object->ref_count++; + vm_freeze_copyopts(object, 0, object->size); + object->ref_count--; + } + } + temp = object->backing_object; if (temp) { TAILQ_REMOVE(&temp->shadow_head, object, shadow_list); @@ -681,6 +690,30 @@ vm_object_pmap_copy(object, start, end) } /* + * Same as vm_object_pmap_copy_1, except range checking really + * works, and is meant for small sections of an object. + */ +void +vm_object_pmap_copy_1(object, start, end) + register vm_object_t object; + register vm_pindex_t start; + register vm_pindex_t end; +{ + vm_pindex_t idx; + register vm_page_t p; + + if (object == NULL || (object->flags & OBJ_WRITEABLE) == 0) + return; + + for (idx = start; idx < end; idx++) { + p = vm_page_lookup(object, idx); + if (p == NULL) + continue; + vm_page_protect(p, VM_PROT_READ); + } +} + +/* * vm_object_pmap_remove: * * Removes all physical pages in the specified |