BV_SCANNED
bp->b_vflags &= ~BV_SCANNED;
if ((bp->b_vflags & BV_SCANNED) != 0)
bp->b_vflags |= BV_SCANNED;
bp->b_vflags &= ~BV_SCANNED;
bp->b_vflags &= ~BV_SCANNED;
if (bp->b_vflags & BV_SCANNED)
bp->b_vflags |= BV_SCANNED;
bp->b_vflags &= ~BV_SCANNED;
if (bp->b_vflags & BV_SCANNED)
bp->b_vflags |= BV_SCANNED;
bp->b_vflags |= BV_SCANNED;
bp->b_vflags |= BV_SCANNED;
bp->b_vflags &= ~BV_SCANNED;
if ((bp->b_vflags & BV_SCANNED) != 0)
bp->b_vflags |= BV_SCANNED;
bp->b_vflags &= ~BV_SCANNED;