1 files changed, 45 insertions, 0 deletions
diff --git a/kernel/power/tuxonice_extent.h b/kernel/power/tuxonice_extent.h
new file mode 100644
index 000000000..aeccf1f5e
--- /dev/null
+++ b/kernel/power/tuxonice_extent.h
@@ -0,0 +1,45 @@
+/*
+ * kernel/power/tuxonice_extent.h
+ *
+ * Copyright (C) 2003-2015 Nigel Cunningham (nigel at nigelcunningham com au)
+ *
+ * This file is released under the GPLv2.
+ *
+ * It contains declarations related to extents. Extents are
+ * TuxOnIce's method of storing some of the metadata for the image.
+ * See tuxonice_extent.c for more info.
+ *
+ */
+
+#include "tuxonice_modules.h"
+
+#ifndef EXTENT_H
+#define EXTENT_H
+
+struct hibernate_extent {
+        unsigned long start, end;
+        struct hibernate_extent *next;
+};
+
+struct hibernate_extent_chain {
+        unsigned long size; /* size of the chain ie sum (max-min+1) */
+        int num_extents;
+        struct hibernate_extent *first, *last_touched;
+        struct hibernate_extent *current_extent;
+        unsigned long current_offset;
+};
+
+/* Simplify iterating through all the values in an extent chain */
+#define toi_extent_for_each(extent_chain, extentpointer, value) \
+if ((extent_chain)->first) \
+        for ((extentpointer) = (extent_chain)->first, (value) = \
+                        (extentpointer)->start; \
+             ((extentpointer) && ((extentpointer)->next || (value) <= \
+                                 (extentpointer)->end)); \
+             (((value) == (extentpointer)->end) ? \
+                ((extentpointer) = (extentpointer)->next, (value) = \
+                 ((extentpointer) ? (extentpointer)->start : 0)) : \
+                        (value)++))
+
+extern void toi_put_extent_chain_from(struct hibernate_extent_chain *chain, unsigned long from);
+#endif