holdingsleep      109 kernel/bio.c     if (!holdingsleep(&b->lock))
holdingsleep      119 kernel/bio.c     if (!holdingsleep(&b->lock))
holdingsleep      121 kernel/defs.h  int             holdingsleep(struct sleeplock*);
holdingsleep      325 kernel/fs.c      if (ip == 0 || !holdingsleep(&ip->lock) || ip->ref < 1)