dm snapshot: use unsigned integer chunk size

Use unsigned integer chunk size.

Maximum chunk size is 512kB, there won't ever be need to use 4GB chunk size,
so the number can be 32-bit. This fixes compiler failure on 32-bit systems
with large block devices.

Cc: stable@kernel.org
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Reviewed-by: Jonathan Brassow <jbrassow@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>

1 files changed, 4 insertions, 4 deletions

diff --git a/drivers/md/dm-exception-store.h b/drivers/md/dm-exception-store.h
index 812c71872ba0..8a223a48802c 100644
--- a/drivers/md/dm-exception-store.h
+++ b/drivers/md/dm-exception-store.h
@@ -101,9 +101,9 @@ struct dm_exception_store {
         struct dm_dev *cow;
 
         /* Size of data blocks saved - must be a power of 2 */
-        chunk_t chunk_size;
-        chunk_t chunk_mask;
-        chunk_t chunk_shift;
+        unsigned chunk_size;
+        unsigned chunk_mask;
+        unsigned chunk_shift;
 
         void *context;
 };
@@ -169,7 +169,7 @@ int dm_exception_store_type_register(struct dm_exception_store_type *type);
 int dm_exception_store_type_unregister(struct dm_exception_store_type *type);
 
 int dm_exception_store_set_chunk_size(struct dm_exception_store *store,
-                                      unsigned long chunk_size_ulong,
+                                      unsigned chunk_size,
                                       char **error);
 
 int dm_exception_store_create(struct dm_target *ti, int argc, char **argv,