valid              80 kernel/bio.c         b->valid = 0;
valid              97 kernel/bio.c     if (!b->valid) {
valid              99 kernel/bio.c       b->valid = 1;
valid               2 kernel/buf.h     int valid; // has data been read from disk?
valid              22 kernel/file.h    int valid;             // inode has been read from disk?
valid             275 kernel/fs.c      ip->valid = 0;
valid             305 kernel/fs.c      if (ip->valid == 0) {
valid             315 kernel/fs.c        ip->valid = 1;
valid             357 kernel/fs.c      int last = (ip->ref == 1 && ip->valid && ip->nlink == 0);
valid             366 kernel/fs.c        ip->valid = 0;