I know I probably don't have much weight anymore but, I re-iterate
that one of the goals of the project should be to make things as
similar as possible for debugging/troubleshooting and learning as
Server 2003... which does have this variable. I don't think it's the
end of the world to keep it around. Stuff like this also tends to
break kdexts.dll.

Best regards,
Alex Ionescu

On Mon, Apr 6, 2020 at 5:15 AM Thomas Faber <thomas.faber@reactos.org> wrote:
>
> https://git.reactos.org/?p=reactos.git;a=commitdiff;h=25a5aee86f43e9f526d4d360e4e4f35feb9d22b4
>
> commit 25a5aee86f43e9f526d4d360e4e4f35feb9d22b4
> Author:     Thomas Faber <thomas.faber@reactos.org>
> AuthorDate: Sat Feb 22 12:31:54 2020 +0100
> Commit:     Thomas Faber <thomas.faber@reactos.org>
> CommitDate: Mon Apr 6 11:13:55 2020 +0200
>
>     [NTOS:MM] Get rid of unnecessary MmZeroingPageThreadActive.
> ---
>  ntoskrnl/mm/ARM3/miarm.h    | 1 -
>  ntoskrnl/mm/ARM3/mminit.c   | 5 ++---
>  ntoskrnl/mm/ARM3/pfnlist.c  | 3 +--
>  ntoskrnl/mm/ARM3/zeropage.c | 3 +--
>  4 files changed, 4 insertions(+), 8 deletions(-)
>
> diff --git a/ntoskrnl/mm/ARM3/miarm.h b/ntoskrnl/mm/ARM3/miarm.h
> index c242b795af6..9d85c42afff 100644
> --- a/ntoskrnl/mm/ARM3/miarm.h
> +++ b/ntoskrnl/mm/ARM3/miarm.h
> @@ -639,7 +639,6 @@ extern PMMPDE MiHighestUserPde;
>  extern PFN_NUMBER MmSystemPageDirectory[PPE_PER_PAGE];
>  extern PMMPTE MmSharedUserDataPte;
>  extern LIST_ENTRY MmProcessList;
> -extern BOOLEAN MmZeroingPageThreadActive;
>  extern KEVENT MmZeroingPageEvent;
>  extern ULONG MmSystemPageColor;
>  extern ULONG MmProcessColorSeed;
> diff --git a/ntoskrnl/mm/ARM3/mminit.c b/ntoskrnl/mm/ARM3/mminit.c
> index 7cd7af10838..d72e7186193 100644
> --- a/ntoskrnl/mm/ARM3/mminit.c
> +++ b/ntoskrnl/mm/ARM3/mminit.c
> @@ -2181,9 +2181,8 @@ MmArmInitSystem(IN ULONG Phase,
>          /* Initialize the Loader Lock */
>          KeInitializeMutant(&MmSystemLoadLock, FALSE);
>
> -        /* Set the zero page event */
> -        KeInitializeEvent(&MmZeroingPageEvent, SynchronizationEvent, FALSE);
> -        MmZeroingPageThreadActive = FALSE;
> +        /* Set up the zero page event */
> +        KeInitializeEvent(&MmZeroingPageEvent, NotificationEvent, FALSE);
>
>          /* Initialize the dead stack S-LIST */
>          InitializeSListHead(&MmDeadStackSListHead);
> diff --git a/ntoskrnl/mm/ARM3/pfnlist.c b/ntoskrnl/mm/ARM3/pfnlist.c
> index eac3a043418..f175541a500 100644
> --- a/ntoskrnl/mm/ARM3/pfnlist.c
> +++ b/ntoskrnl/mm/ARM3/pfnlist.c
> @@ -701,10 +701,9 @@ MiInsertPageInFreeList(IN PFN_NUMBER PageFrameIndex)
>      ColorTable->Count++;
>
>      /* Notify zero page thread if enough pages are on the free list now */
> -    if ((ListHead->Total >= 8) && !(MmZeroingPageThreadActive))
> +    if (ListHead->Total >= 8)
>      {
>          /* Set the event */
> -        MmZeroingPageThreadActive = TRUE;
>          KeSetEvent(&MmZeroingPageEvent, IO_NO_INCREMENT, FALSE);
>      }
>
> diff --git a/ntoskrnl/mm/ARM3/zeropage.c b/ntoskrnl/mm/ARM3/zeropage.c
> index 6d859f6806f..5fe22294199 100644
> --- a/ntoskrnl/mm/ARM3/zeropage.c
> +++ b/ntoskrnl/mm/ARM3/zeropage.c
> @@ -17,7 +17,6 @@
>
>  /* GLOBALS ********************************************************************/
>
> -BOOLEAN MmZeroingPageThreadActive;
>  KEVENT MmZeroingPageEvent;
>
>  /* PRIVATE FUNCTIONS **********************************************************/
> @@ -73,7 +72,7 @@ MmZeroPageThread(VOID)
>          {
>              if (!MmFreePageListHead.Total)
>              {
> -                MmZeroingPageThreadActive = FALSE;
> +                KeClearEvent(&MmZeroingPageEvent);
>                  MiReleasePfnLock(OldIrql);
>                  break;
>              }
>

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