Fixed MM_PageFault duplicating a page when it is only used once

[tpg/acess2.git] / Kernel / arch / x86 / mm_virt.c

diff --git a/Kernel/arch/x86/mm_virt.c b/Kernel/arch/x86/mm_virt.c
index 2e726cc..b2520b5 100644 (file)
--- a/Kernel/arch/x86/mm_virt.c
+++ b/Kernel/arch/x86/mm_virt.c
@@ -105,7 +105,7 @@ void MM_PageFault(Uint Addr, Uint ErrorCode, tRegs *Regs)
         && gaPageTable[Addr>>12] & PF_COW )
        {
                tPAddr  paddr;
-               if(MM_GetRefCount( gaPageTable[Addr>>12] & ~0xFFF ) == 0)
+               if(MM_GetRefCount( gaPageTable[Addr>>12] & ~0xFFF ) == 1)
                {
                        gaPageTable[Addr>>12] &= ~PF_COW;
                        gaPageTable[Addr>>12] |= PF_PRESENT|PF_WRITE;