prev               43 kernel/bio.c     bcache.head.prev = &bcache.head;
prev               47 kernel/bio.c       b->prev = &bcache.head;
prev               49 kernel/bio.c       bcache.head.next->prev = b;
prev               76 kernel/bio.c     for (b = bcache.head.prev; b != &bcache.head; b = b->prev) {
prev              128 kernel/bio.c       b->next->prev = b->prev;
prev              129 kernel/bio.c       b->prev->next = b->next;
prev              131 kernel/bio.c       b->prev = &bcache.head;
prev              132 kernel/bio.c       bcache.head.next->prev = b;
prev                8 kernel/buf.h     struct buf *prev; // LRU cache list