* Boston, MA 021110-1307, USA.
*/
-#ifndef __CHUNK_CHECK_H__
-#define __CHUNK_CHECK_H__
+#ifndef __BTRFS_CHECK_H__
+#define __BTRFS_CHECK_H__
#if BTRFS_FLAT_INCLUDES
#include "kerncompat.h"
+#include "ctree.h"
#include "extent-cache.h"
#include "list.h"
#else
#include <btrfs/kerncompat.h>
+#include <btrfs/ctree.h>
#include <btrfs/extent-cache.h>
#include <btrfs/list.h>
#endif /* BTRFS_FLAT_INCLUDES */
}
void free_chunk_cache_tree(struct cache_tree *chunk_cache);
+/*
+ * Function to check validation for num_stripes, or it can call
+ * float point error for 0 division
+ * return < 0 for invalid combination
+ * return 0 for valid combination
+ */
+static inline int check_num_stripes(u64 type, int num_stripes)
+{
+ if (num_stripes == 0)
+ return -1;
+ if (type & BTRFS_BLOCK_GROUP_RAID5 && num_stripes <= 1)
+ return -1;
+ if (type & BTRFS_BLOCK_GROUP_RAID6 && num_stripes <= 2)
+ return -1;
+ return 0;
+}
+
u64 calc_stripe_length(u64 type, u64 length, int num_stripes);
/* For block group tree */
static inline void block_group_tree_init(struct block_group_tree *tree)