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-rw-r--r--EdkModulePkg/Universal/Variable/RuntimeDxe/Variable.c17
-rw-r--r--EdkModulePkg/Universal/Variable/RuntimeDxe/Variable.h1
2 files changed, 18 insertions, 0 deletions
diff --git a/EdkModulePkg/Universal/Variable/RuntimeDxe/Variable.c b/EdkModulePkg/Universal/Variable/RuntimeDxe/Variable.c
index a9505d903c..d575417fe9 100644
--- a/EdkModulePkg/Universal/Variable/RuntimeDxe/Variable.c
+++ b/EdkModulePkg/Universal/Variable/RuntimeDxe/Variable.c
@@ -1389,6 +1389,23 @@ Returns:
mVariableModuleGlobal->NonVolatileLastVariableOffset = (UINTN) NextVariable - (UINTN) CurrPtr;
//
+ // Check if the free area is blow a threshold
+ //
+ if ((((VARIABLE_STORE_HEADER *)((UINTN) CurrPtr))->Size - mVariableModuleGlobal->NonVolatileLastVariableOffset) < VARIABLE_RECLAIM_THRESHOLD) {
+ Status = Reclaim (
+ mVariableModuleGlobal->VariableBase[Physical].NonVolatileVariableBase,
+ &mVariableModuleGlobal->NonVolatileLastVariableOffset,
+ FALSE
+ );
+ }
+
+ if (EFI_ERROR (Status)) {
+ gBS->FreePool (mVariableModuleGlobal);
+ gBS->FreePool (VolatileVariableStore);
+ return Status;
+ }
+
+ //
// Check if the free area is really free.
//
for (Index = mVariableModuleGlobal->NonVolatileLastVariableOffset; Index < VariableStoreHeader->Size; Index++) {
diff --git a/EdkModulePkg/Universal/Variable/RuntimeDxe/Variable.h b/EdkModulePkg/Universal/Variable/RuntimeDxe/Variable.h
index 55423a25b9..014df50c3d 100644
--- a/EdkModulePkg/Universal/Variable/RuntimeDxe/Variable.h
+++ b/EdkModulePkg/Universal/Variable/RuntimeDxe/Variable.h
@@ -35,6 +35,7 @@ Abstract:
#define ALIGNMENT 1
#endif
+#define VARIABLE_RECLAIM_THRESHOLD (1024)
#define VARIABLE_STORE_SIZE (64 * 1024)
#define SCRATCH_SIZE (4 * 1024)