SWP_VALID        1261 mm/swapfile.c  	if (!(si->flags & SWP_VALID))
SWP_VALID        2452 mm/swapfile.c  	p->flags |= SWP_WRITEOK | SWP_VALID;
SWP_VALID        2604 mm/swapfile.c  	p->flags &= ~SWP_VALID;		/* mark swap device as invalid */