swapfilepages    2933 mm/swapfile.c  	unsigned long swapfilepages;
swapfilepages    2983 mm/swapfile.c  	swapfilepages = i_size_read(inode) >> PAGE_SHIFT;
swapfilepages    2984 mm/swapfile.c  	if (swapfilepages && maxpages > swapfilepages) {