kern_return_t
vnode_pager_terminate(
#if !DEBUG
__unused
#endif
memory_object_t mem_obj)
{
PAGER_DEBUG(PAGER_ALL, ("vnode_pager_terminate: %p\n", mem_obj));
return(KERN_SUCCESS);
}
kern_return_t
vnode_pager_unmap(
memory_object_t mem_obj)
{
register vnode_pager_t vnode_object;
PAGER_DEBUG(PAGER_ALL, ("vnode_pager_unmap: %p\n", mem_obj));
vnode_object = vnode_pager_lookup(mem_obj);
ubc_unmap(vnode_object->vnode_handle);
return KERN_SUCCESS;
}
kern_return_t
vnode_pager_synchronize(
memory_object_t mem_obj,
memory_object_offset_t offset,
vm_size_t length,
__unused vm_sync_t sync_flags)
{
register vnode_pager_t vnode_object;
PAGER_DEBUG(PAGER_ALL, ("vnode_pager_synchronize: %p\n", mem_obj));
vnode_object = vnode_pager_lookup(mem_obj);
memory_object_synchronize_completed(vnode_object->control_handle, offset, length);
return (KERN_SUCCESS);
}
void
vnode_pager_deallocate(
memory_object_t mem_obj)
{
register vnode_pager_t vnode_object;
PAGER_DEBUG(PAGER_ALL, ("vnode_pager_deallocate: %p\n", mem_obj));
vnode_object = vnode_pager_lookup(mem_obj);
if (hw_atomic_sub(&vnode_object->ref_count, 1) == 0) {
if (vnode_object->vnode_handle != NULL) {
vnode_pager_vrele(vnode_object->vnode_handle);
}
zfree(vnode_pager_zone, vnode_object);
}
return;
}
kern_return_t
vnode_pager_init(memory_object_t mem_obj,
memory_object_control_t control,
#if !DEBUG
__unused
#endif
vm_size_t pg_size)
{
vnode_pager_t vnode_object;
kern_return_t kr;
memory_object_attr_info_data_t attributes;
PAGER_DEBUG(PAGER_ALL, ("vnode_pager_init: %p, %p, %x\n", mem_obj, control, pg_size));
if (control == MEMORY_OBJECT_CONTROL_NULL)
return KERN_INVALID_ARGUMENT;
vnode_object = vnode_pager_lookup(mem_obj);
memory_object_control_reference(control);
vnode_object->control_handle = control;
attributes.copy_strategy = MEMORY_OBJECT_COPY_DELAY;
/* attributes.cluster_size = (1 << (CLUSTER_SHIFT + PAGE_SHIFT));*/
attributes.cluster_size = (1 << (PAGE_SHIFT));
attributes.may_cache_object = TRUE;
attributes.temporary = TRUE;
kr = memory_object_change_attributes(
control,
MEMORY_OBJECT_ATTRIBUTE_INFO,
(memory_object_info_t) &attributes,
MEMORY_OBJECT_ATTR_INFO_COUNT);
if (kr != KERN_SUCCESS)
panic("vnode_pager_init: memory_object_change_attributes() failed");
return(KERN_SUCCESS);
}
kern_return_t
vnode_pager_map(
memory_object_t mem_obj,
vm_prot_t prot)
{
vnode_pager_t vnode_object;
int ret;
kern_return_t kr;
PAGER_DEBUG(PAGER_ALL, ("vnode_pager_map: %p %x\n", mem_obj, prot));
vnode_object = vnode_pager_lookup(mem_obj);
ret = ubc_map(vnode_object->vnode_handle, prot);
if (ret != 0) {
kr = KERN_FAILURE;
} else {
kr = KERN_SUCCESS;
}
return kr;
}
