Extern or forward variable declaration at include/linux/fs.h, line 38 References: block/blk-cgroup.c, line 187 block/blk-cgroup.c, line 472 block/blk-cgroup.c, line 473 block/blk-core.c, line 77 block/blk-core.c, line 88 block/blk-core.c, line 115 block/blk-core.c, line 119 block/blk-core.c, line 587 block/blk-core.c, line 599 block/blk-core.c, line 711 block/blk-core.c, line 713 block/blk-core.c, line 714 block/blk-core.c, line 717 block/blk-core.c, line 721 block/blk-core.c, line 771 block/blk-core.c, line 1199 block/blk-core.c, line 2699 block/blk-integrity.c, line 446 block/blk-integrity.c, line 449 block/blk-settings.c, line 256 block/blk-sysfs.c, line 92 block/blk-sysfs.c, line 107 block/blk-sysfs.c, line 239 block/blk-sysfs.c, line 802 block/blk-wbt.c, line 99 block/blk-wbt.c, line 282 block/blk-wbt.c, line 282 block/blk-wbt.c, line 342 block/blk-wbt.c, line 342 block/blk-wbt.c, line 426 block/compat_ioctl.c, line 664 block/genhd.c, line 587 block/genhd.c, line 616 block/ioctl.c, line 508 drivers/block/aoe/aoeblk.c, line 399 drivers/block/aoe/aoeblk.c, line 400 drivers/block/drbd/drbd_main.c, line 2465 drivers/block/drbd/drbd_main.c, line 2837 drivers/block/drbd/drbd_main.c, line 2838 drivers/block/drbd/drbd_nl.c, line 1331 drivers/block/drbd/drbd_nl.c, line 1331 drivers/block/drbd/drbd_nl.c, line 1333 drivers/block/drbd/drbd_nl.c, line 1334 drivers/block/drbd/drbd_nl.c, line 1335 drivers/block/drbd/drbd_nl.c, line 1335 drivers/block/drbd/drbd_nl.c, line 3348 drivers/block/drbd/drbd_proc.c, line 291 drivers/block/drbd/drbd_req.c, line 936 drivers/block/drbd/drbd_req.c, line 941 drivers/block/pktcdvd.c, line 1246 drivers/block/pktcdvd.c, line 2373 drivers/block/rbd.c, line 4527 drivers/block/zram/zram_drv.c, line 120 drivers/md/bcache/request.c, line 1012 drivers/md/bcache/request.c, line 1021 drivers/md/bcache/request.c, line 1035 drivers/md/bcache/request.c, line 1128 drivers/md/bcache/request.c, line 1139 drivers/md/bcache/super.c, line 810 drivers/md/bcache/super.c, line 1135 drivers/md/bcache/super.c, line 1136 drivers/md/bcache/super.c, line 1137 drivers/md/dm-cache-target.c, line 2294 drivers/md/dm-era-target.c, line 1382 drivers/md/dm-table.c, line 1753 drivers/md/dm-thin.c, line 2717 drivers/md/dm.c, line 1317 drivers/md/dm.c, line 1400 drivers/md/dm.c, line 1411 drivers/md/linear.c, line 65 drivers/md/md.c, line 5349 drivers/md/md.c, line 5350 drivers/md/md.c, line 5707 drivers/md/multipath.c, line 172 drivers/md/raid0.c, line 44 drivers/md/raid0.c, line 423 drivers/md/raid0.c, line 424 drivers/md/raid1.c, line 747 drivers/md/raid1.c, line 749 drivers/md/raid10.c, line 863 drivers/md/raid10.c, line 3844 drivers/md/raid10.c, line 3845 drivers/md/raid10.c, line 4646 drivers/md/raid10.c, line 4647 drivers/md/raid5.c, line 6334 drivers/md/raid5.c, line 6337 drivers/md/raid5.c, line 7156 drivers/md/raid5.c, line 7157 drivers/md/raid5.c, line 7766 drivers/md/raid5.c, line 7767 drivers/mtd/mtdcore.c, line 49 drivers/mtd/mtdcore.c, line 499 drivers/mtd/mtdcore.c, line 502 drivers/mtd/mtdcore.c, line 1773 drivers/mtd/mtdcore.c, line 1775 drivers/mtd/mtdsuper.c, line 52 drivers/staging/lustre/lustre/include/lustre_disk.h, line 136 drivers/staging/lustre/lustre/llite/llite_lib.c, line 864 fs/9p/v9fs.h, line 117 fs/afs/internal.h, line 313 fs/btrfs/ctree.h, line 804 fs/btrfs/disk-io.c, line 1797 fs/btrfs/disk-io.c, line 1813 fs/btrfs/file.c, line 1834 fs/btrfs/file.c, line 1908 fs/btrfs/volumes.c, line 348 fs/ceph/addr.c, line 579 fs/ceph/addr.c, line 701 fs/ceph/addr.c, line 980 fs/ceph/debugfs.c, line 254 fs/ceph/file.c, line 1371 fs/ceph/file.c, line 1500 fs/ceph/super.c, line 582 fs/ceph/super.c, line 628 fs/ceph/super.c, line 646 fs/ceph/super.c, line 948 fs/ceph/super.c, line 952 fs/ceph/super.c, line 955 fs/ceph/super.c, line 958 fs/ceph/super.h, line 95 fs/ceph/super.h, line 95 fs/cifs/cifs_fs_sb.h, line 71 fs/ecryptfs/ecryptfs_kernel.h, line 352 fs/exofs/exofs.h, line 67 fs/ext2/ialloc.c, line 171 fs/ext4/super.c, line 361 fs/fs-writeback.c, line 203 fs/fs-writeback.c, line 231 fs/fs-writeback.c, line 456 fs/fs-writeback.c, line 785 fs/fs-writeback.c, line 908 fs/fs-writeback.c, line 1948 fs/fs-writeback.c, line 1993 fs/fs-writeback.c, line 2293 fs/fs-writeback.c, line 2390 fs/fuse/file.c, line 1186 fs/fuse/file.c, line 1232 fs/fuse/file.c, line 1463 fs/fuse/file.c, line 1767 fs/fuse/fuse_i.h, line 635 fs/gfs2/ops_fstype.c, line 1229 fs/gfs2/super.c, line 755 fs/ncpfs/ncp_fs_sb.h, line 146 fs/nfs/client.c, line 741 fs/nfs/client.c, line 742 fs/nfs/client.c, line 897 fs/nfs/client.c, line 933 fs/nfs/file.c, line 624 fs/nfs/file.c, line 626 fs/nfs/super.c, line 2325 fs/nfs/super.c, line 2534 fs/nfs/write.c, line 273 fs/nfs/write.c, line 288 fs/nfs/write.c, line 1811 fs/nilfs2/super.c, line 1071 fs/ntfs/file.c, line 1948 fs/ntfs/file.c, line 1952 fs/orangefs/inode.c, line 139 fs/orangefs/orangefs-kernel.h, line 532 fs/super.c, line 1050 fs/ubifs/ubifs.h, line 1219 fs/ubifs/ubifs.h, line 1460 fs/xfs/xfs_buf.h, line 112 fs/xfs/xfs_file.c, line 626 fs/xfs/xfs_file.c, line 661 include/linux/backing-dev.h, line 20 include/linux/backing-dev.h, line 21 include/linux/backing-dev.h, line 24 include/linux/backing-dev.h, line 26 include/linux/backing-dev.h, line 27 include/linux/backing-dev.h, line 28 include/linux/backing-dev.h, line 30 include/linux/backing-dev.h, line 31 include/linux/backing-dev.h, line 49 include/linux/backing-dev.h, line 131 include/linux/backing-dev.h, line 132 include/linux/backing-dev.h, line 162 include/linux/backing-dev.h, line 176 include/linux/backing-dev.h, line 193 include/linux/backing-dev.h, line 205 include/linux/backing-dev.h, line 210 include/linux/backing-dev.h, line 215 include/linux/backing-dev.h, line 220 include/linux/backing-dev.h, line 246 include/linux/backing-dev.h, line 248 include/linux/backing-dev.h, line 268 include/linux/backing-dev.h, line 285 include/linux/backing-dev.h, line 315 include/linux/backing-dev.h, line 423 include/linux/backing-dev.h, line 435 include/linux/backing-dev.h, line 441 include/linux/backing-dev.h, line 497 include/linux/backing-dev.h, line 502 include/linux/backing-dev.h, line 507 include/linux/backing-dev.h, line 512 include/linux/blkdev.h, line 435 include/linux/blkdev.h, line 435 include/linux/blkdev.h, line 1182 include/linux/coda_psdev.h, line 18 include/linux/fs.h, line 38 include/linux/fs.h, line 1315 include/linux/mtd/mtd.h, line 338 include/linux/mtd/mtd.h, line 338 include/linux/nfs_fs_sb.h, line 136 include/linux/nfs_fs_sb.h, line 136 include/linux/swap.h, line 394 include/linux/writeback.h, line 34 include/linux/writeback.h, line 328 include/trace/events/wbt.h, line 16 include/trace/events/wbt.h, line 59 include/trace/events/wbt.h, line 88 include/trace/events/wbt.h, line 127 include/trace/events/writeback.h, line 95 include/trace/events/writeback.h, line 293 include/trace/events/writeback.h, line 307 include/trace/events/writeback.h, line 356 mm/backing-dev.c, line 17 mm/backing-dev.c, line 48 mm/backing-dev.c, line 118 mm/backing-dev.c, line 125 mm/backing-dev.c, line 134 mm/backing-dev.c, line 138 mm/backing-dev.c, line 147 mm/backing-dev.c, line 166 mm/backing-dev.c, line 177 mm/backing-dev.c, line 196 mm/backing-dev.c, line 216 mm/backing-dev.c, line 289 mm/backing-dev.c, line 400 mm/backing-dev.c, line 482 mm/backing-dev.c, line 519 mm/backing-dev.c, line 635 mm/backing-dev.c, line 666 mm/backing-dev.c, line 682 mm/backing-dev.c, line 753 mm/backing-dev.c, line 769 mm/backing-dev.c, line 773 mm/backing-dev.c, line 794 mm/backing-dev.c, line 823 mm/backing-dev.c, line 829 mm/backing-dev.c, line 846 mm/backing-dev.c, line 855 mm/backing-dev.c, line 874 mm/backing-dev.c, line 880 mm/backing-dev.c, line 891 mm/fadvise.c, line 33 mm/filemap.c, line 2896 mm/filemap.c, line 2956 mm/page-writeback.c, line 676 mm/page-writeback.c, line 697 mm/page-writeback.c, line 1581 mm/page-writeback.c, line 1867 mm/page-writeback.c, line 1991 mm/page-writeback.c, line 1995 mm/page-writeback.c, line 2007 mm/page-writeback.c, line 2019 mm/page-writeback.c, line 2730 mm/page-writeback.c, line 2773 mm/readahead.c, line 212 mm/readahead.c, line 381 mm/vmscan.c, line 529 mm/vmscan.c, line 1668 mm/vmscan.c, line 1669