Extern or forward variable declaration at include/linux/mm.h, line 21 References: fs/adfs/inode.c, line 54 fs/affs/file.c, line 395 fs/afs/internal.h, line 737 fs/afs/internal.h, line 738 fs/afs/write.c, line 439 fs/afs/write.c, line 469 fs/afs/write.c, line 549 fs/afs/write.c, line 711 fs/bfs/file.c, line 158 fs/block_dev.c, line 177 fs/buffer.c, line 1645 fs/buffer.c, line 2660 fs/buffer.c, line 2860 fs/cifs/file.c, line 1212 fs/cifs/file.c, line 1437 fs/ecryptfs/ecryptfs_kernel.h, line 179 fs/ecryptfs/mmap.c, line 68 fs/ext2/inode.c, line 715 fs/ext2/inode.c, line 764 fs/ext2/inode.c, line 786 fs/ext2/inode.c, line 1429 fs/ext3/fsync.c, line 83 fs/ext3/inode.c, line 1490 fs/ext3/inode.c, line 1556 fs/ext3/inode.c, line 1589 fs/ext4/fsync.c, line 90 fs/ext4/inode.c, line 1625 fs/ext4/inode.c, line 2013 fs/ext4/inode.c, line 2115 fs/ext4/inode.c, line 2267 fs/ext4/inode.c, line 2372 fs/ext4/inode.c, line 2818 fs/ext4/inode.c, line 2832 fs/ext4/inode.c, line 2867 fs/ext4/inode.c, line 2917 fs/fat/inode.c, line 123 fs/fat/inode.c, line 129 fs/fs-writeback.c, line 269 fs/fs-writeback.c, line 376 fs/fs-writeback.c, line 443 fs/fs-writeback.c, line 532 fs/fs-writeback.c, line 557 fs/fs-writeback.c, line 602 fs/fs-writeback.c, line 697 fs/fs-writeback.c, line 728 fs/fuse/file.c, line 1178 fs/gfs2/meta_io.c, line 45 fs/gfs2/ops_address.c, line 98 fs/gfs2/ops_address.c, line 133 fs/gfs2/ops_address.c, line 155 fs/gfs2/ops_address.c, line 184 fs/gfs2/ops_address.c, line 209 fs/gfs2/ops_address.c, line 249 fs/gfs2/ops_address.c, line 266 fs/gfs2/ops_address.c, line 343 fs/gfs2/ops_address.c, line 412 fs/hfs/inode.c, line 28 fs/hfs/inode.c, line 117 fs/hfsplus/inode.c, line 25 fs/hfsplus/inode.c, line 114 fs/hostfs/hostfs_kern.c, line 437 fs/hpfs/file.c, line 85 fs/jbd2/commit.c, line 195 fs/jfs/inode.c, line 268 fs/jfs/inode.c, line 274 fs/jfs/jfs_metapage.c, line 354 fs/minix/inode.c, line 345 fs/mpage.c, line 440 fs/mpage.c, line 672 fs/mpage.c, line 695 fs/nfs/write.c, line 174 fs/nfs/write.c, line 266 fs/nfs/write.c, line 280 fs/nfs/write.c, line 295 fs/nfs/write.c, line 304 fs/nfs/write.c, line 313 fs/nfs/write.c, line 1356 fs/nfs/write.c, line 1407 fs/nfs/write.c, line 1426 fs/nfs/write.c, line 1461 fs/nfs/write.c, line 1505 fs/ntfs/aops.c, line 550 fs/ntfs/aops.c, line 920 fs/ntfs/aops.c, line 1353 fs/ocfs2/aops.c, line 402 fs/omfs/file.c, line 315 fs/omfs/file.c, line 321 fs/qnx4/inode.c, line 433 fs/reiserfs/inode.c, line 2317 fs/reiserfs/inode.c, line 2532 fs/smbfs/file.c, line 174 fs/sysv/itree.c, line 452 fs/ubifs/budget.c, line 95 fs/ubifs/budget.c, line 109 fs/ubifs/file.c, line 980 fs/udf/file.c, line 63 fs/udf/inode.c, line 116 fs/udf/inode.c, line 154 fs/ufs/inode.c, line 558 include/linux/buffer_head.h, line 205 include/linux/buffer_head.h, line 239 include/linux/mm.h, line 21 include/linux/mm.h, line 821 include/linux/nfs_fs.h, line 458 include/linux/nfs_fs.h, line 459 include/linux/nfs_fs.h, line 469 mm/filemap.c, line 211 mm/migrate.c, line 496 mm/page-writeback.c, line 435 mm/page-writeback.c, line 617 mm/page-writeback.c, line 691 mm/page-writeback.c, line 863 mm/page-writeback.c, line 972 mm/page-writeback.c, line 990 mm/page-writeback.c, line 1001 mm/page-writeback.c, line 1029 mm/page-writeback.c, line 1119 mm/page_io.c, line 96 mm/shmem.c, line 999 mm/swapfile.c, line 925 mm/vmscan.c, line 357