#define mraccess(a) ((void) 0)
#define ismrlocked(a,b) 1
#define spinlock_init(a,b) ((void) 0)
-#define ovbcopy(from,to,count) memmove(to,from,count)
#define __return_address __builtin_return_address(0)
#define xfs_btree_reada_bufl(m,fsb,c) ((void) 0)
#define xfs_btree_reada_bufs(m,fsb,c,x) ((void) 0)