XEN_PAGES_PER_INDIRECT_FRAME   65 drivers/block/xen-blkback/common.h 	(XEN_PAGES_PER_INDIRECT_FRAME / XEN_PAGES_PER_SEGMENT)
XEN_PAGES_PER_INDIRECT_FRAME   69 drivers/block/xen-blkback/common.h #define INDIRECT_PAGES(_segs) DIV_ROUND_UP(_segs, XEN_PAGES_PER_INDIRECT_FRAME)