Extern or forward variable declaration include/linux/fs.h, line 617 [usage...] include/linux/sched.h, line 750 [usage...] include/linux/swap.h, line 325 [usage...] include/linux/writeback.h, line 10 [usage...] Structure include/linux/backing-dev.h, line 60 [usage...] Class, struct, or union member include/linux/blkdev.h, line 363 [usage...] include/linux/fs.h, line 631 [usage...] include/linux/mtd/mtd.h, line 178 [usage...] include/linux/nfs_fs_sb.h, line 109 [usage...] include/linux/sched.h, line 1455 [usage...]