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* Fixed the strange vm_cache_ref reference count mechanism: now, a fresh

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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
This commit is contained in:
Axel Dörfler
2005-12-21 17:00:03 +00:00
parent d5abe15e84
commit ea2cd27e57
6 changed files with 77 additions and 76 deletions
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headers/private/kernel/vm_cache.h
+1 -1
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@@ -22,7 +22,7 @@ extern "C" {
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, bool acquire_store_ref);
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);