Extern or forward variable declaration include/linux/blkdev.h, line 263 [usage...] include/linux/device-mapper.h, line 22 [usage...] include/linux/sunrpc/xdr.h, line 19 [usage...] include/xen/xen.h, line 45 [usage...] Structure include/linux/bvec.h, line 31 [usage...] Local variable drivers/block/floppy.c, line 4117 [usage...] drivers/block/zram/zram_drv.c, line 627 [usage...] drivers/lightnvm/core.c, line 814 [usage...] fs/zonefs/super.c, line 1549 [usage...]