btrfs: constify map parameter for nr_parity_stripes and nr_data_stripes
Signed-off-by: David Sterba <dsterba@suse.com>
diff --git a/fs/btrfs/raid56.h b/fs/btrfs/raid56.h
index f5d4c13..2503485 100644
--- a/fs/btrfs/raid56.h
+++ b/fs/btrfs/raid56.h
@@ -7,7 +7,7 @@
#ifndef BTRFS_RAID56_H
#define BTRFS_RAID56_H
-static inline int nr_parity_stripes(struct map_lookup *map)
+static inline int nr_parity_stripes(const struct map_lookup *map)
{
if (map->type & BTRFS_BLOCK_GROUP_RAID5)
return 1;
@@ -17,7 +17,7 @@ static inline int nr_parity_stripes(struct map_lookup *map)
return 0;
}
-static inline int nr_data_stripes(struct map_lookup *map)
+static inline int nr_data_stripes(const struct map_lookup *map)
{
return map->num_stripes - nr_parity_stripes(map);
}