CcSetReadAheadGranularity function (ntifs.h)
The CcSetReadAheadGranularity routine sets the read-ahead granularity for a cached file.
Syntax
void CcSetReadAheadGranularity(
[in] PFILE_OBJECT FileObject,
[in] ULONG Granularity
);
Parameters
[in] FileObject
Pointer to a file object for the cached file whose read-ahead granularity is to be set.
[in] Granularity
Specifies the desired read-ahead granularity, which must be an even power of two and must be greater than or equal to PAGE_SIZE.
Return value
None
Remarks
After CcInitializeCacheMap is called to cache a file, but before CcSetReadAheadGranularity is called for the cached file, the default read-ahead granularity for the cached file is equal to PAGE_SIZE.
Requirements
| Requirement | Value |
|---|---|
| Target Platform | Universal |
| Header | ntifs.h (include Ntifs.h) |
| Library | NtosKrnl.lib |
| DLL | NtosKrnl.exe |