purge_gnt_list 633 drivers/block/xen-blkback/blkback.c goto purge_gnt_list; purge_gnt_list 640 drivers/block/xen-blkback/blkback.c goto purge_gnt_list; purge_gnt_list 652 drivers/block/xen-blkback/blkback.c purge_gnt_list: