08/09: [NTOSKRNL] Handle FSRTL_FLAG_LIMIT_MODIFIED_PAGES flag in CcDeferWrite(). Util now, CcDeferWrite() was ignoring limits per file object.

[Pierre Schweitzer]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=19c822341ba5ba29761b6a...

commit 19c822341ba5ba29761b6ae1449e99789122396e
Author:     Pierre Schweitzer [e-mail]
AuthorDate: Wed Feb 7 21:11:39 2018 +0100
Commit:     Pierre Schweitzer [e-mail]
CommitDate: Wed Feb 7 21:37:17 2018 +0100

[NTOSKRNL] Handle FSRTL_FLAG_LIMIT_MODIFIED_PAGES flag in CcDeferWrite().
    Util now, CcDeferWrite() was ignoring limits per file object.
---
 ntoskrnl/cc/copy.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/ntoskrnl/cc/copy.c b/ntoskrnl/cc/copy.c
index 30360b6c31..7a84e23fb9 100644
--- a/ntoskrnl/cc/copy.c
+++ b/ntoskrnl/cc/copy.c
@@ -629,6 +629,7 @@ CcDeferWrite (
     IN BOOLEAN Retrying)
 {
     PDEFERRED_WRITE Context;
+    PFSRTL_COMMON_FCB_HEADER Fcb;

CCTRACE(CC_API_DEBUG, "FileObject=%p PostRoutine=%p Context1=%p Context2=%p BytesToWrite=%lu Retrying=%d\n",
         FileObject, PostRoutine, Context1, Context2, BytesToWrite, Retrying);
@@ -642,6 +643,8 @@ CcDeferWrite (
         return;
     }

+    Fcb = FileObject->FsContext;
+
     /* Otherwise, initialize the context */
     RtlZeroMemory(Context, sizeof(DEFERRED_WRITE));
     Context->NodeTypeCode = NODE_TYPE_DEFERRED_WRITE;
@@ -651,6 +654,7 @@ CcDeferWrite (
     Context->Context1 = Context1;
     Context->Context2 = Context2;
     Context->BytesToWrite = BytesToWrite;
+    Context->LimitModifiedPages = BooleanFlagOn(Fcb->Flags, FSRTL_FLAG_LIMIT_MODIFIED_PAGES);

/* And queue it */
     if (Retrying)