CcUpdateExternalCacheInfoEx - NtDoc
Native API online documentation, based on the System Informer
(formerly Process Hacker) phnt
headers
// ntifs.h
NTSTATUS CcUpdateExternalCacheInfoEx(
PVOID ExternalCacheContext,
PCC_DIRTY_PAGES_INFO DirtyPagesInfo
);
View the official Windows Driver Kit DDI referenceNo description available.
A file system calls CcUpdateExternalCacheInfoEx to ask the cache manager (Cc) to update dirty page statistics in the specified external cache information structure.
ExternalCacheContext[in] Pointer to the context that identifies the external cache structure to be updated. This context was returned by CcRegisterExternalCacheEx.
DirtyPagesInfo[in] Pointer to a CC_DIRTY_PAGES_INFO structure that contains updated information about dirty page statistics. Cc ignores the dirty page thresholds part of this structure.
CcUpdateExternalCacheInfoEx returns STATUS_SUCCESS if the operation succeeds. Otherwise, it returns an appropriate error code such as the following.
| Return code | Description |
|---|---|
| STATUS_INVALID_PARAMETER | The version in DirtyPagesInfo is invalid. |
Cc needs these updated values so it can accurately set the dirty page threshold and target.