v4.19.13 snapshot.
diff --git a/include/linux/stat.h b/include/linux/stat.h
new file mode 100644
index 0000000..765573d
--- /dev/null
+++ b/include/linux/stat.h
@@ -0,0 +1,51 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LINUX_STAT_H
+#define _LINUX_STAT_H
+
+
+#include <asm/stat.h>
+#include <uapi/linux/stat.h>
+
+#define S_IRWXUGO	(S_IRWXU|S_IRWXG|S_IRWXO)
+#define S_IALLUGO	(S_ISUID|S_ISGID|S_ISVTX|S_IRWXUGO)
+#define S_IRUGO		(S_IRUSR|S_IRGRP|S_IROTH)
+#define S_IWUGO		(S_IWUSR|S_IWGRP|S_IWOTH)
+#define S_IXUGO		(S_IXUSR|S_IXGRP|S_IXOTH)
+
+#define UTIME_NOW	((1l << 30) - 1l)
+#define UTIME_OMIT	((1l << 30) - 2l)
+
+#include <linux/types.h>
+#include <linux/time.h>
+#include <linux/uidgid.h>
+
+#define KSTAT_QUERY_FLAGS (AT_STATX_SYNC_TYPE)
+
+struct kstat {
+	u32		result_mask;	/* What fields the user got */
+	umode_t		mode;
+	unsigned int	nlink;
+	uint32_t	blksize;	/* Preferred I/O size */
+	u64		attributes;
+	u64		attributes_mask;
+#define KSTAT_ATTR_FS_IOC_FLAGS				\
+	(STATX_ATTR_COMPRESSED |			\
+	 STATX_ATTR_IMMUTABLE |				\
+	 STATX_ATTR_APPEND |				\
+	 STATX_ATTR_NODUMP |				\
+	 STATX_ATTR_ENCRYPTED				\
+	 )/* Attrs corresponding to FS_*_FL flags */
+	u64		ino;
+	dev_t		dev;
+	dev_t		rdev;
+	kuid_t		uid;
+	kgid_t		gid;
+	loff_t		size;
+	struct timespec64 atime;
+	struct timespec64 mtime;
+	struct timespec64 ctime;
+	struct timespec64 btime;			/* File creation time */
+	u64		blocks;
+};
+
+#endif