1 files changed, 91 insertions, 0 deletions
diff --git a/drivers/md/dm.h b/drivers/md/dm.h
new file mode 100644
index 0000000..0ade60c
--- /dev/null
+++ b/drivers/md/dm.h
@@ -0,0 +1,91 @@
+/*
+ * Internal header file for device mapper
+ *
+ * Copyright (C) 2001, 2002 Sistina Software
+ * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
+ *
+ * This file is released under the LGPL.
+ */
+
+#ifndef DM_INTERNAL_H
+#define DM_INTERNAL_H
+
+#include <linux/fs.h>
+#include <linux/device-mapper.h>
+#include <linux/list.h>
+#include <linux/blkdev.h>
+#include <linux/hdreg.h>
+
+/*
+ * Suspend feature flags
+ */
+#define DM_SUSPEND_LOCKFS_FLAG		(1 << 0)
+#define DM_SUSPEND_NOFLUSH_FLAG		(1 << 1)
+
+/*
+ * List of devices that a metadevice uses and should open/close.
+ */
+struct dm_dev_internal {
+	struct list_head list;
+	atomic_t count;
+	struct dm_dev dm_dev;
+};
+
+struct dm_table;
+
+/*-----------------------------------------------------------------
+ * Internal table functions.
+ *---------------------------------------------------------------*/
+void dm_table_event_callback(struct dm_table *t,
+			     void (*fn)(void *), void *context);
+struct dm_target *dm_table_get_target(struct dm_table *t, unsigned int index);
+struct dm_target *dm_table_find_target(struct dm_table *t, sector_t sector);
+void dm_table_set_restrictions(struct dm_table *t, struct request_queue *q);
+struct list_head *dm_table_get_devices(struct dm_table *t);
+void dm_table_presuspend_targets(struct dm_table *t);
+void dm_table_postsuspend_targets(struct dm_table *t);
+int dm_table_resume_targets(struct dm_table *t);
+int dm_table_any_congested(struct dm_table *t, int bdi_bits);
+
+/*
+ * To check the return value from dm_table_find_target().
+ */
+#define dm_target_is_valid(t) ((t)->table)
+
+/*-----------------------------------------------------------------
+ * A registry of target types.
+ *---------------------------------------------------------------*/
+int dm_target_init(void);
+void dm_target_exit(void);
+struct target_type *dm_get_target_type(const char *name);
+void dm_put_target_type(struct target_type *t);
+int dm_target_iterate(void (*iter_func)(struct target_type *tt,
+					void *param), void *param);
+
+int dm_split_args(int *argc, char ***argvp, char *input);
+
+/*
+ * The device-mapper can be driven through one of two interfaces;
+ * ioctl or filesystem, depending which patch you have applied.
+ */
+int dm_interface_init(void);
+void dm_interface_exit(void);
+
+/*
+ * Targets for linear and striped mappings
+ */
+int dm_linear_init(void);
+void dm_linear_exit(void);
+
+int dm_stripe_init(void);
+void dm_stripe_exit(void);
+
+int dm_open_count(struct mapped_device *md);
+int dm_lock_for_deletion(struct mapped_device *md);
+
+void dm_kobject_uevent(struct mapped_device *md);
+
+int dm_kcopyd_init(void);
+void dm_kcopyd_exit(void);
+
+#endif