add page cache with read-ahead and dirty writeback, file-backed and anonymous mmap with CoW, VAD-based virtual memory replacing the old user region model, PFN database with eviction and reclaim, file identity for cross-open section sharing, FAT32 path cache and per-file cluster chain cache, serial.sys for COM1 keyboard input, xHCI MSI with INTx and polled fallback, PciEnableMsiAuto, waitable input queue, KeWaitForAnyEvent, per-process thread info syscall, expanded kernel stats (PFN/PTE/VAD/file-cache/disk), pool allocation tags, async I/O user buffer locking, file flush on close, add docs.md.

code/kernel/ke_mutex.c

@@ -12,7 +12,7 @@
 static void KiMutexDestroy(OBJECT* obj) { (void)obj; }
 
 // Implements the mutex Create operation.
-KSTATUS KeMutexCreate(MUTEX **out) {
+__declspec(dllexport) KSTATUS KeMutexCreate(MUTEX **out) {
     if (!out) return STATUS_INVALID_PARAMETER;
     MUTEX* m = (MUTEX *)ObAllocateObject(ObjectTypeMutex, sizeof(MUTEX));
     if (!m)  return STATUS_NO_MEMORY;
@@ -25,7 +25,7 @@ KSTATUS KeMutexCreate(MUTEX **out) {
 }
 
 // Implements the acquire Mutex operation.
-KSTATUS KeAcquireMutex(MUTEX* mutex) {
+__declspec(dllexport) KSTATUS KeAcquireMutex(MUTEX* mutex) {
     if (!mutex) return STATUS_INVALID_PARAMETER;
     if (!KeCanWait()) return STATUS_INVALID_IRQL;
     THREAD* self = KeGetCurrentThread();
@@ -45,7 +45,7 @@ KSTATUS KeAcquireMutex(MUTEX* mutex) {
 }
 
 // Implements the try Acquire Mutex operation.
-KSTATUS KeTryAcquireMutex(MUTEX* mutex) {
+__declspec(dllexport) KSTATUS KeTryAcquireMutex(MUTEX* mutex) {
     if (!mutex) return STATUS_INVALID_PARAMETER;
     THREAD* self = KeGetCurrentThread();
     uintptr_t flags = KeAcquireSpinlock(&mutex->Lock);
@@ -59,13 +59,14 @@ KSTATUS KeTryAcquireMutex(MUTEX* mutex) {
 }
 
 // Releases mutex.
-void KeReleaseMutex(MUTEX* mutex) {
+__declspec(dllexport) void KeReleaseMutex(MUTEX* mutex) {
     if (!mutex) return;
     uintptr_t flags = KeAcquireSpinlock(&mutex->Lock);
 
     if (!LIST_IS_EMPTY(&mutex->WaitList)) {
         LIST_ENTRY* node = ListPopHead(&mutex->WaitList);
         THREAD* waiter   = CONTAINING_RECORD(node, THREAD, SchedulerLink);
+        KeSetThreadWaitList(waiter, (LIST_ENTRY*)0);
         // Direct handoff: the selected waiter owns the mutex when its wait
         // returns. Do not drop Owner to NULL, or another thread can steal it.
         mutex->Owner = waiter;