dm snapshot: remove dm_snap header use

Move useful functions out of dm-snap.h and stop using dm-snap.h.

Signed-off-by: Jonathan Brassow <jbrassow@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>

1 files changed, 3 insertions, 15 deletions

diff --git a/drivers/md/dm-snap.h b/drivers/md/dm-snap.h
index c8a486e0ea2c..4f61bc4c14f6 100644
--- a/drivers/md/dm-snap.h
+++ b/drivers/md/dm-snap.h
@@ -68,22 +68,10 @@ struct dm_snapshot {
         struct hlist_head tracked_chunk_hash[DM_TRACKED_CHUNK_HASH_SIZE];
 };
 
-/*
- * Return the number of sectors in the device.
- */
-static inline sector_t get_dev_size(struct block_device *bdev)
-{
-        return bdev->bd_inode->i_size >> SECTOR_SHIFT;
-}
-
-static inline chunk_t sector_to_chunk(struct dm_snapshot *s, sector_t sector)
-{
-        return (sector & ~s->store->chunk_mask) >> s->store->chunk_shift;
-}
-
-static inline sector_t chunk_to_sector(struct dm_snapshot *s, chunk_t chunk)
+static inline sector_t chunk_to_sector(struct dm_exception_store *store,
+                                      chunk_t chunk)
 {
-        return chunk << s->store->chunk_shift;
+        return chunk << store->chunk_shift;
 }
 
 static inline int bdev_equal(struct block_device *lhs, struct block_device *rhs)