dm snapshot: remove dm_snap header

[linux-2.6-omap-h63xx.git] / drivers / md / dm-snap.h

diff --git a/drivers/md/dm-snap.h b/drivers/md/dm-snap.h
deleted file mode 100644 (file)
index 4f61bc4..0000000
--- a/drivers/md/dm-snap.h
+++ /dev/null
@@ -1,86 +0,0 @@
-/*
- * Copyright (C) 2001-2002 Sistina Software (UK) Limited.
- *
- * This file is released under the GPL.
- */
-
-#ifndef DM_SNAPSHOT_H
-#define DM_SNAPSHOT_H
-
-#include <linux/device-mapper.h>
-#include "dm-exception-store.h"
-#include "dm-bio-list.h"
-#include <linux/blkdev.h>
-#include <linux/workqueue.h>
-
-struct exception_table {
-       uint32_t hash_mask;
-       unsigned hash_shift;
-       struct list_head *table;
-};
-
-#define DM_TRACKED_CHUNK_HASH_SIZE     16
-#define DM_TRACKED_CHUNK_HASH(x)       ((unsigned long)(x) & \
-                                        (DM_TRACKED_CHUNK_HASH_SIZE - 1))
-
-struct dm_snapshot {
-       struct rw_semaphore lock;
-
-       struct dm_dev *origin;
-
-       /* List of snapshots per Origin */
-       struct list_head list;
-
-       /* You can't use a snapshot if this is 0 (e.g. if full) */
-       int valid;
-
-       /* Origin writes don't trigger exceptions until this is set */
-       int active;
-
-       /* Used for display of table */
-       char type;
-
-       mempool_t *pending_pool;
-
-       atomic_t pending_exceptions_count;
-
-       struct exception_table pending;
-       struct exception_table complete;
-
-       /*
-        * pe_lock protects all pending_exception operations and access
-        * as well as the snapshot_bios list.
-        */
-       spinlock_t pe_lock;
-
-       /* The on disk metadata handler */
-       struct dm_exception_store *store;
-
-       struct dm_kcopyd_client *kcopyd_client;
-
-       /* Queue of snapshot writes for ksnapd to flush */
-       struct bio_list queued_bios;
-       struct work_struct queued_bios_work;
-
-       /* Chunks with outstanding reads */
-       mempool_t *tracked_chunk_pool;
-       spinlock_t tracked_chunk_lock;
-       struct hlist_head tracked_chunk_hash[DM_TRACKED_CHUNK_HASH_SIZE];
-};
-
-static inline sector_t chunk_to_sector(struct dm_exception_store *store,
-                                     chunk_t chunk)
-{
-       return chunk << store->chunk_shift;
-}
-
-static inline int bdev_equal(struct block_device *lhs, struct block_device *rhs)
-{
-       /*
-        * There is only ever one instance of a particular block
-        * device so we can compare pointers safely.
-        */
-       return lhs == rhs;
-}
-
-#endif