diff --git a/fs/eulerfs/wear.c b/fs/eulerfs/wear.c
new file mode 100644
index 0000000000000000000000000000000000000000..3535efab9fa898ca15e07bfe458717ff2f3689f9
--- /dev/null
+++ b/fs/eulerfs/wear.c
@@ -0,0 +1,48 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2021. Huawei Technologies Co., Ltd. All rights reserved.
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include "wear.h"
+#include <linux/vmalloc.h>
+#include "euler.h"
+
+void wear_init(struct super_block *sb)
+{
+	struct eufs_sb_info *sbi = EUFS_SB(sb);
+
+	if (!wear_control)
+		return;
+	sbi->page_wears = vmalloc(sizeof(struct page_wear) * sbi->npages);
+	memset(sbi->page_wears, 0, sizeof(struct page_wear) * sbi->npages);
+}
+
+void wear_fini(struct super_block *sb)
+{
+	struct eufs_sb_info *sbi = EUFS_SB(sb);
+
+	if (!wear_control)
+		return;
+	if (sbi->page_wears)
+		vfree(sbi->page_wears);
+	sbi->page_wears = NULL;
+}
+
+/* Return whether it's in a good state */
+bool wear_inc(struct super_block *sb, void *page)
+{
+	struct eufs_sb_info *sbi = EUFS_SB(sb);
+
+	if (!wear_control)
+		return true;
+	return sbi->page_wears[(page - sbi->data_start) / PAGE_SIZE].wear++ <=
+	       wear_threshold;
+}
diff --git a/fs/eulerfs/wear.h b/fs/eulerfs/wear.h
new file mode 100644
index 0000000000000000000000000000000000000000..d0114813f1efc344f56d4b45096370a7b786c2d3
--- /dev/null
+++ b/fs/eulerfs/wear.h
@@ -0,0 +1,30 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2021. Huawei Technologies Co., Ltd. All rights reserved.
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef EUFS_WEAR_H
+#define EUFS_WEAR_H
+
+#include <linux/fs.h>
+
+extern int wear_threshold;
+extern int wear_control;
+
+struct page_wear {
+	int wear;
+};
+
+void wear_init(struct super_block *sb);
+void wear_fini(struct super_block *sb);
+bool wear_inc(struct super_block *sb, void *page);
+
+#endif /* EUFS_WEAR_H */