read_ahead_kb     140 mm/backing-dev.c 	unsigned long read_ahead_kb;
read_ahead_kb     143 mm/backing-dev.c 	ret = kstrtoul(buf, 10, &read_ahead_kb);
read_ahead_kb     147 mm/backing-dev.c 	bdi->ra_pages = read_ahead_kb >> (PAGE_SHIFT - 10);
read_ahead_kb     164 mm/backing-dev.c BDI_SHOW(read_ahead_kb, K(bdi->ra_pages))