Extern or forward variable declaration include/linux/fs.h, line 498 [usage...] include/linux/sched.h, line 618 [usage...] include/linux/swap.h, line 255 [usage...] include/linux/writeback.h, line 10 [usage...] Structure include/linux/backing-dev.h, line 42 [usage...] Class, struct, or union member include/linux/blkdev.h, line 318 [usage...] include/linux/fs.h, line 512 [usage...] include/linux/nfs_fs_sb.h, line 88 [usage...] include/linux/sched.h, line 1249 [usage...]