fs: introduce a generic shutdown ioctl
This patch introduces a generic ioctl for fs shutdown.
Change-Id: I452ee16b0078a2704b8026962e5bd07b67710c06
diff --git a/include/linux/fs.h b/include/linux/fs.h
index beedf27..3b44026 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -332,6 +332,7 @@
#define FIFREEZE _IOWR('X', 119, int) /* Freeze */
#define FITHAW _IOWR('X', 120, int) /* Thaw */
#define FITRIM _IOWR('X', 121, struct fstrim_range) /* Trim */
+#define FS_IOC_SHUTDOWN _IOR('X', 125, __u32) /* Shutdown */
#define FS_IOC_GETFLAGS _IOR('f', 1, long)
#define FS_IOC_SETFLAGS _IOW('f', 2, long)
@@ -380,6 +381,13 @@
#define SYNC_FILE_RANGE_WRITE 2
#define SYNC_FILE_RANGE_WAIT_AFTER 4
+/*
+ * Flags for going down operation used by FS_IOC_GOINGDOWN
+ */
+#define FS_GOING_DOWN_FULLSYNC 0x0 /* going down with full sync */
+#define FS_GOING_DOWN_METASYNC 0x1 /* going down with metadata */
+#define FS_GOING_DOWN_NOSYNC 0x2 /* going down */
+
#ifdef __KERNEL__
#include <linux/linkage.h>