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git-svn-id: file:///srv/svn/repos/haiku/trunk/current@10 a95241bf-73f2-0310-859d-f6bbb57e9c96
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ejakowatz
2002-07-09 12:24:59 +00:00
commit 52a3801208
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docs/develop/kernel/vm_store_device
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static void device_destroy(struct vm_store *store)
Frees the space associated with this store
static off_t device_commit(struct vm_store *store, off_t size)
Sets this store's commited size to size.
static int device_has_page(struct vm_store *store, off_t offset)
Returns 0
static ssize_t device_read(struct vm_store *store, off_t offset, iovecs *vecs)
Returns unimplemented.
static ssize_t device_write(struct vm_store *store, off_t offset, iovecs *vecs)
Returns 0
static int device_fault(struct vm_store *store, struct vm_address_space *aspace, off_t offset)
Should be called when a page is not mapped in. Locks the translation map, Finds the region in the cache that contains this page and maps it in. Unlocks the cache.
vm_store *vm_store_create_device(addr base_addr)
Allocates memory for the vm_store structure, plus the data_store_device structure. Sets cache to null, and data to the device_store_data. Sets the device_store_data's base address to the base address passed in.