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vm_page no longer keeps a pointer to the vm_cache_ref but to the vm_cache.

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This cleans the page handling when having to make an area copy-on-write;
regions belong to vm_cache_ref, pages to vm_cache.
Added prototype for new call vm_copy_area().
Fixed some return types.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@9263 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler 2004-10-08 22:54:42 +00:00
parent da0209e2e4
commit a2ff38d818
2 changed files with 7 additions and 5 deletions
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10
headers/private/kernel/vm.h
View File

@ -53,15 +53,17 @@ region_id vm_map_physical_memory(aspace_id aid, const char *name, void **address
region_id vm_map_file(aspace_id aid, char *name, void **address, int addr_type,
addr size, int lock, int mapping, const char *path, off_t offset);
region_id vm_create_null_region(aspace_id aid, char *name, void **address, int addr_type, addr size);
area_id vm_copy_area(aspace_id addressSpaceID, const char *name, void **_address, uint32 addressSpec,
uint32 protection, area_id sourceID);
region_id vm_clone_region(aspace_id aid, char *name, void **address, int addr_type,
region_id source_region, int mapping, int lock);
int vm_delete_region(aspace_id aid, region_id id);
status_t vm_delete_region(aspace_id aid, region_id id);
region_id vm_find_region_by_name(aspace_id aid, const char *name);
status_t vm_create_vnode_cache(void *vnode, void **_cache);
int vm_get_page_mapping(aspace_id aid, addr vaddr, addr *paddr);
int vm_get_physical_page(addr paddr, addr *vaddr, int flags);
int vm_put_physical_page(addr vaddr);
status_t vm_get_page_mapping(aspace_id aid, addr vaddr, addr *paddr);
status_t vm_get_physical_page(addr paddr, addr *vaddr, int flags);
status_t vm_put_physical_page(addr vaddr);
area_id _user_create_area(const char *name, void **address, uint32 addressSpec,
size_t size, uint32 lock, uint32 protection);

2
headers/private/kernel/vm_types.h
View File

@ -20,7 +20,7 @@ typedef struct vm_page {
addr_t ppn; // physical page number
off_t offset;
struct vm_cache_ref *cache_ref;
struct vm_cache *cache;
struct vm_page *cache_prev;
struct vm_page *cache_next;