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sys: IRP_MJ_READ: remove FspFileNodeTrySetFileInfo at completion

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sys: IRP_MJ_READ: remove PagingIo early exit optimization
sys: IRP_MJ_WRITE: remove PagingIo early exit optimization
This commit is contained in:
Bill Zissimopoulos
2016-04-13 20:33:10 -07:00
parent 41296044e6
commit 1239c610a5
6 changed files with 4 additions and 58 deletions
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8
src/sys/write.c
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@ -258,7 +258,6 @@ static NTSTATUS FspFsvolWriteNonCached(
BOOLEAN WriteToEndOfFile =
FILE_WRITE_TO_END_OF_FILE == WriteOffset.LowPart && -1L == WriteOffset.HighPart;
BOOLEAN PagingIo = BooleanFlagOn(Irp->Flags, IRP_PAGING_IO);
FSP_FSCTL_FILE_INFO FileInfo;
FSP_FSCTL_TRANSACT_REQ *Request;
BOOLEAN Success;
@ -276,13 +275,6 @@ static NTSTATUS FspFsvolWriteNonCached(
if (FspIoqStopped(FspFsvolDeviceExtension(FsvolDeviceObject)->Ioq))
return FspFsvolDeviceStoppedStatus(FsvolDeviceObject);
/* if this is a Paging I/O see if we can optimize it away! */
if (PagingIo && /* if this is Paging I/O */
FlagOn(FspIrpTopFlags(Irp), FspFileNodeAcquireMain) && /* and TopLevelIrp has acquired Main */
FspFileNodeTryGetFileInfo(FileNode, &FileInfo) && /* and the cached FileSize is valid */
(UINT64)WriteOffset.QuadPart >= FileInfo.FileSize) /* and the WriteOffset is past EOF */
return STATUS_SUCCESS;
/* probe and lock the user buffer */
Result = FspLockUserBuffer(Irp, WriteLength, IoReadAccess);
if (!NT_SUCCESS(Result))