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* Added a acquire_unreferenced_ref() to vm_store

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* his has to be used by the page writer to make sure the vnode is still valid.
* This should have been the final nail on the Luposian bug - I haven't tested
  it yet, but we'll certainly see :-)


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22462 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler
2007-10-06 15:35:38 +00:00
parent 80f5469291
commit c950f17a51
7 changed files with 41 additions and 13 deletions
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headers/private/kernel/vm_types.h
+9 -8
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@@ -219,19 +219,20 @@ struct vm_store {
};
typedef struct vm_store_ops {
void (*destroy)(struct vm_store *backing_store);
status_t (*commit)(struct vm_store *backing_store, off_t size);
bool (*has_page)(struct vm_store *backing_store, off_t offset);
status_t (*read)(struct vm_store *backing_store, off_t offset,
void (*destroy)(struct vm_store *backingStore);
status_t (*commit)(struct vm_store *backingStore, off_t size);
bool (*has_page)(struct vm_store *backingStore, off_t offset);
status_t (*read)(struct vm_store *backingStore, off_t offset,
const iovec *vecs, size_t count, size_t *_numBytes, bool mayBlock,
bool fsReenter);
status_t (*write)(struct vm_store *backing_store, off_t offset,
status_t (*write)(struct vm_store *backingStore, off_t offset,
const iovec *vecs, size_t count, size_t *_numBytes, bool mayBlock,
bool fsReenter);
status_t (*fault)(struct vm_store *backing_store,
status_t (*fault)(struct vm_store *backingStore,
struct vm_address_space *aspace, off_t offset);
void (*acquire_ref)(struct vm_store *backing_store);
void (*release_ref)(struct vm_store *backing_store);
status_t (*acquire_unreferenced_ref)(struct vm_store *backingStore);
void (*acquire_ref)(struct vm_store *backingStore);
void (*release_ref)(struct vm_store *backingStore);
} vm_store_ops;
#endif /* _KERNEL_VM_TYPES_H */