1 files changed, 78 insertions, 0 deletions
diff --git a/kernel/power/tuxonice_bio.h b/kernel/power/tuxonice_bio.h
new file mode 100644
index 000000000..9d52a3b69
--- /dev/null
+++ b/kernel/power/tuxonice_bio.h
@@ -0,0 +1,78 @@
+/*
+ * kernel/power/tuxonice_bio.h
+ *
+ * Copyright (C) 2004-2015 Nigel Cunningham (nigel at nigelcunningham com au)
+ *
+ * Distributed under GPLv2.
+ *
+ * This file contains declarations for functions exported from
+ * tuxonice_bio.c, which contains low level io functions.
+ */
+
+#include <linux/buffer_head.h>
+#include "tuxonice_extent.h"
+
+void toi_put_extent_chain(struct hibernate_extent_chain *chain);
+int toi_add_to_extent_chain(struct hibernate_extent_chain *chain,
+                unsigned long start, unsigned long end);
+
+struct hibernate_extent_saved_state {
+        int extent_num;
+        struct hibernate_extent *extent_ptr;
+        unsigned long offset;
+};
+
+struct toi_bdev_info {
+        struct toi_bdev_info *next;
+        struct hibernate_extent_chain blocks;
+        struct block_device *bdev;
+        struct toi_module_ops *allocator;
+        int allocator_index;
+        struct hibernate_extent_chain allocations;
+        char name[266]; /* "swap on " or "file " + up to 256 chars */
+
+        /* Saved in header */
+        char uuid[17];
+        dev_t dev_t;
+        int prio;
+        int bmap_shift;
+        int blocks_per_page;
+        unsigned long pages_used;
+        struct hibernate_extent_saved_state saved_state[4];
+};
+
+struct toi_extent_iterate_state {
+        struct toi_bdev_info *current_chain;
+        int num_chains;
+        int saved_chain_number[4];
+        struct toi_bdev_info *saved_chain_ptr[4];
+};
+
+/*
+ * Our exported interface so the swapwriter and filewriter don't
+ * need these functions duplicated.
+ */
+struct toi_bio_ops {
+        int (*bdev_page_io) (int rw, struct block_device *bdev, long pos,
+                        struct page *page);
+        int (*register_storage)(struct toi_bdev_info *new);
+        void (*free_storage)(void);
+};
+
+struct toi_allocator_ops {
+        unsigned long (*toi_swap_storage_available) (void);
+};
+
+extern struct toi_bio_ops toi_bio_ops;
+
+extern char *toi_writer_buffer;
+extern int toi_writer_buffer_posn;
+
+struct toi_bio_allocator_ops {
+        int (*register_storage) (void);
+        unsigned long (*storage_available)(void);
+        int (*allocate_storage) (struct toi_bdev_info *, unsigned long);
+        int (*bmap) (struct toi_bdev_info *);
+        void (*free_storage) (struct toi_bdev_info *);
+        unsigned long (*free_unused_storage) (struct toi_bdev_info *, unsigned long used);
+};