ea2cd27e57
vm_cache_ref starts with a reference count of 1. When acquiring a vm_cache, you no longer need to worry if that should go through the vm_store, or not; as it now always does. * map_backing_store() no longer needs to play with the vm_cache_ref references. * that simplified some code. * vfs_get_vnode_cache() now grabs a reference to the cache, if successful. * better balanced vnode ownership on vnode_store creation (vnode_store released the vnode before if its creation failed). git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@15641 a95241bf-73f2-0310-859d-f6bbb57e9c96
41 lines
1.2 KiB
C
41 lines
1.2 KiB
C
/*
|
|
* Copyright 2003-2004, Axel Dörfler, axeld@pinc-software.de.
|
|
* Distributed under the terms of the MIT License.
|
|
*
|
|
* Copyright 2001-2002, Travis Geiselbrecht. All rights reserved.
|
|
* Distributed under the terms of the NewOS License.
|
|
*/
|
|
#ifndef _KERNEL_VM_CACHE_H
|
|
#define _KERNEL_VM_CACHE_H
|
|
|
|
|
|
#include <kernel.h>
|
|
#include <vm.h>
|
|
|
|
struct kernel_args;
|
|
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
status_t vm_cache_init(struct kernel_args *args);
|
|
vm_cache *vm_cache_create(vm_store *store);
|
|
vm_cache_ref *vm_cache_ref_create(vm_cache *cache);
|
|
void vm_cache_acquire_ref(vm_cache_ref *cache_ref);
|
|
void vm_cache_release_ref(vm_cache_ref *cache_ref);
|
|
vm_page *vm_cache_lookup_page(vm_cache_ref *cacheRef, off_t page);
|
|
void vm_cache_insert_page(vm_cache_ref *cacheRef, vm_page *page, off_t offset);
|
|
void vm_cache_remove_page(vm_cache_ref *cacheRef, vm_page *page);
|
|
status_t vm_cache_write_modified(vm_cache_ref *ref);
|
|
status_t vm_cache_set_minimal_commitment(vm_cache_ref *ref, off_t commitment);
|
|
status_t vm_cache_resize(vm_cache_ref *cacheRef, off_t newSize);
|
|
status_t vm_cache_insert_area(vm_cache_ref *cacheRef, vm_area *area);
|
|
status_t vm_cache_remove_area(vm_cache_ref *cacheRef, vm_area *area);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* _KERNEL_VM_CACHE_H */
|