Merge tag 'flex-array-transformations-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux

Pull flexible-array updates from Gustavo Silva:
"Transform zero-length arrays, in unions, into flexible arrays"

* tag 'flex-array-transformations-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux:
bcache: Replace zero-length arrays with DECLARE_FLEX_ARRAY() helper
mm/memremap: Replace zero-length array with DECLARE_FLEX_ARRAY() helper
exportfs: Replace zero-length array with DECLARE_FLEX_ARRAY() helper

drivers/md/bcache/bcache_ondisk.h

···
 	__u64			prio_bucket[MAX_CACHES_PER_SET];
 
 	union {
-		struct bkey	start[0];
-		__u64		d[0];
+		DECLARE_FLEX_ARRAY(struct bkey, start);
+		DECLARE_FLEX_ARRAY(__u64, d);
 	};
 };
 
···
 	__u32			keys;
 
 	union {
-		struct bkey	start[0];
-		__u64		d[0];
+		DECLARE_FLEX_ARRAY(struct bkey, start);
+		DECLARE_FLEX_ARRAY(__u64, d);
 	};
 };
 

include/linux/exportfs.h

···
  			u32 parent_block;
  			u32 parent_generation;
  		} udf;
-		__u32 raw[0];
+		DECLARE_FLEX_ARRAY(__u32, raw);
 	};
 };
 

include/linux/memremap.h

···
 	int nr_range;
 	union {
 		struct range range;
-		struct range ranges[0];
+		DECLARE_FLEX_ARRAY(struct range, ranges);
 	};
 };