Extern or forward variable declaration at include/linux/buffer_head.h, line 48 References: drivers/block/zram/zram_drv.c, line 454 fs/adfs/inode.c, line 46 fs/adfs/inode.c, line 54 fs/adfs/inode.c, line 70 fs/affs/file.c, line 383 fs/affs/file.c, line 397 fs/affs/file.c, line 416 fs/affs/file.c, line 432 fs/affs/file.c, line 450 fs/affs/file.c, line 650 fs/affs/file.c, line 688 fs/affs/file.c, line 880 fs/befs/linuxvfs.c, line 44 fs/befs/linuxvfs.c, line 118 fs/bfs/file.c, line 163 fs/bfs/file.c, line 171 fs/bfs/file.c, line 185 fs/block_dev.c, line 80 fs/block_dev.c, line 92 fs/block_dev.c, line 611 fs/block_dev.c, line 619 fs/block_dev.c, line 1945 fs/block_dev.c, line 1972 fs/block_dev.c, line 2120 fs/btrfs/inode.c, line 4510 fs/btrfs/inode.c, line 8038 fs/btrfs/inode.c, line 8065 fs/buffer.c, line 192 fs/buffer.c, line 541 fs/buffer.c, line 543 fs/buffer.c, line 572 fs/buffer.c, line 573 fs/buffer.c, line 600 fs/buffer.c, line 644 fs/buffer.c, line 702 fs/buffer.c, line 789 fs/buffer.c, line 791 fs/buffer.c, line 812 fs/buffer.c, line 814 fs/buffer.c, line 1131 fs/buffer.c, line 1189 fs/buffer.c, line 1609 fs/buffer.c, line 2109 fs/buffer.c, line 2132 fs/buffer.c, line 2168 fs/buffer.c, line 2351 fs/buffer.c, line 2373 fs/buffer.c, line 2449 fs/buffer.c, line 2577 fs/buffer.c, line 2718 fs/buffer.c, line 2805 fs/buffer.c, line 2883 fs/buffer.c, line 3001 fs/buffer.c, line 3243 fs/crypto/inline_crypt.c, line 266 fs/dax.c, line 331 fs/dax.c, line 350 fs/dax.c, line 397 fs/dax.c, line 438 fs/dax.c, line 477 fs/dax.c, line 576 fs/dax.c, line 630 fs/dax.c, line 659 fs/dax.c, line 677 fs/dax.c, line 716 fs/dax.c, line 775 fs/dax.c, line 849 fs/dax.c, line 938 fs/dax.c, line 1024 fs/dax.c, line 1184 fs/dax.c, line 1235 fs/dax.c, line 1404 fs/dax.c, line 1457 fs/dax.c, line 1661 fs/direct-io.c, line 1194 fs/efs/inode.c, line 21 fs/erofs/data.c, line 37 fs/erofs/data.c, line 128 fs/erofs/data.c, line 333 fs/erofs/dir.c, line 71 fs/erofs/internal.h, line 421 fs/erofs/namei.c, line 96 fs/erofs/super.c, line 287 fs/erofs/zdata.c, line 155 fs/erofs/zdata.c, line 206 fs/erofs/zdata.c, line 238 fs/erofs/zdata.c, line 980 fs/erofs/zdata.c, line 986 fs/exfat/file.c, line 16 fs/exfat/inode.c, line 377 fs/exfat/inode.c, line 383 fs/exfat/inode.c, line 393 fs/exfat/inode.c, line 410 fs/exfat/inode.c, line 441 fs/exfat/inode.c, line 471 fs/ext2/dir.c, line 92 fs/ext2/dir.c, line 202 fs/ext2/inode.c, line 60 fs/ext2/inode.c, line 884 fs/ext2/inode.c, line 897 fs/ext2/inode.c, line 910 fs/ext2/inode.c, line 929 fs/ext2/inode.c, line 938 fs/ext2/inode.c, line 951 fs/ext2/inode.c, line 957 fs/ext4/ext4.h, line 3279 fs/ext4/ext4.h, line 3292 fs/ext4/ext4_jbd2.c, line 200 fs/ext4/inline.c, line 525 fs/ext4/inline.c, line 645 fs/ext4/inline.c, line 800 fs/ext4/inline.c, line 858 fs/ext4/inode.c, line 1115 fs/ext4/inode.c, line 1260 fs/ext4/inode.c, line 1368 fs/ext4/inode.c, line 1546 fs/ext4/inode.c, line 1853 fs/ext4/inode.c, line 2537 fs/ext4/inode.c, line 2623 fs/ext4/inode.c, line 2855 fs/ext4/inode.c, line 2923 fs/ext4/inode.c, line 3048 fs/ext4/inode.c, line 3162 fs/ext4/inode.c, line 3683 fs/ext4/inode.c, line 3783 fs/ext4/inode.c, line 3811 fs/ext4/inode.c, line 3832 fs/ext4/inode.c, line 3953 fs/ext4/inode.c, line 4153 fs/ext4/inode.c, line 5963 fs/ext4/move_extent.c, line 129 fs/f2fs/checkpoint.c, line 39 fs/f2fs/checkpoint.c, line 56 fs/f2fs/checkpoint.c, line 333 fs/f2fs/checkpoint.c, line 368 fs/f2fs/compress.c, line 99 fs/f2fs/compress.c, line 907 fs/f2fs/compress.c, line 1317 fs/f2fs/data.c, line 76 fs/f2fs/data.c, line 101 fs/f2fs/data.c, line 1211 fs/f2fs/data.c, line 1282 fs/f2fs/data.c, line 1313 fs/f2fs/data.c, line 1345 fs/f2fs/data.c, line 2921 fs/f2fs/data.c, line 3178 fs/f2fs/data.c, line 3246 fs/f2fs/data.c, line 3256 fs/f2fs/data.c, line 3364 fs/f2fs/data.c, line 3497 fs/f2fs/data.c, line 3613 fs/f2fs/data.c, line 3795 fs/f2fs/data.c, line 3823 fs/f2fs/data.c, line 3881 fs/f2fs/data.c, line 4044 fs/f2fs/f2fs.h, line 1751 fs/f2fs/f2fs.h, line 1806 fs/f2fs/f2fs.h, line 1811 fs/f2fs/f2fs.h, line 2373 fs/f2fs/f2fs.h, line 2400 fs/f2fs/f2fs.h, line 3476 fs/f2fs/file.c, line 379 fs/f2fs/file.c, line 642 fs/f2fs/file.c, line 1079 fs/f2fs/file.c, line 1430 fs/f2fs/file.c, line 3794 fs/f2fs/gc.c, line 685 fs/f2fs/node.c, line 2032 fs/f2fs/super.c, line 1948 fs/f2fs/super.c, line 2007 fs/f2fs/super.c, line 2195 fs/fat/file.c, line 218 fs/fat/inode.c, line 202 fs/fat/inode.c, line 218 fs/fat/inode.c, line 228 fs/fat/inode.c, line 243 fs/fat/inode.c, line 263 fs/fat/inode.c, line 320 fs/fat/inode.c, line 1947 fs/freevxfs/vxfs_subr.c, line 42 fs/freevxfs/vxfs_subr.c, line 68 fs/freevxfs/vxfs_subr.c, line 180 fs/fscache/page.c, line 304 fs/fscache/page.c, line 559 fs/fscache/page.c, line 1218 fs/gfs2/aops.c, line 207 fs/gfs2/aops.c, line 236 fs/gfs2/aops.c, line 331 fs/gfs2/aops.c, line 412 fs/gfs2/aops.c, line 516 fs/gfs2/aops.c, line 636 fs/gfs2/aops.c, line 720 fs/gfs2/file.c, line 750 fs/gfs2/file.c, line 930 fs/gfs2/glock.c, line 266 fs/gfs2/glock.c, line 1002 fs/gfs2/glock.c, line 2150 fs/gfs2/glock.h, line 172 fs/gfs2/glock.h, line 175 fs/gfs2/glops.c, line 179 fs/gfs2/glops.c, line 217 fs/gfs2/glops.c, line 272 fs/gfs2/glops.c, line 289 fs/gfs2/glops.c, line 327 fs/gfs2/incore.h, line 813 fs/gfs2/log.c, line 97 fs/gfs2/lops.c, line 507 fs/gfs2/lops.c, line 828 fs/gfs2/main.c, line 66 fs/gfs2/main.c, line 66 fs/gfs2/main.c, line 108 fs/gfs2/meta_io.c, line 112 fs/gfs2/meta_io.c, line 332 fs/gfs2/meta_io.h, line 40 fs/gfs2/ops_fstype.c, line 75 fs/gfs2/quota.c, line 699 fs/gfs2/super.c, line 512 fs/gfs2/super.c, line 1338 fs/hfs/bnode.c, line 239 fs/hfs/extent.c, line 488 fs/hfs/inode.c, line 42 fs/hfs/inode.c, line 52 fs/hfs/inode.c, line 68 fs/hfs/inode.c, line 133 fs/hfs/inode.c, line 155 fs/hfsplus/bnode.c, line 403 fs/hfsplus/extents.c, line 555 fs/hfsplus/inode.c, line 35 fs/hfsplus/inode.c, line 45 fs/hfsplus/inode.c, line 61 fs/hfsplus/inode.c, line 129 fs/hfsplus/inode.c, line 151 fs/hfsplus/xattr.c, line 131 fs/hpfs/file.c, line 134 fs/hpfs/file.c, line 140 fs/hpfs/file.c, line 154 fs/hpfs/file.c, line 170 fs/hpfs/file.c, line 188 fs/inode.c, line 136 fs/inode.c, line 368 fs/inode.c, line 377 fs/iomap/buffered-io.c, line 515 fs/iomap/buffered-io.c, line 666 fs/iomap/buffered-io.c, line 1598 fs/isofs/compress.c, line 302 fs/isofs/inode.c, line 1188 fs/jbd2/commit.c, line 190 fs/jbd2/commit.c, line 218 fs/jbd2/commit.c, line 988 fs/jfs/inode.c, line 288 fs/jfs/inode.c, line 304 fs/jfs/inode.c, line 314 fs/jfs/inode.c, line 328 fs/jfs/inode.c, line 336 fs/jfs/jfs_logmgr.c, line 202 fs/jfs/jfs_metapage.c, line 581 fs/jfs/jfs_metapage.c, line 770 fs/libfs.c, line 520 fs/libfs.c, line 566 fs/minix/inode.c, line 416 fs/minix/inode.c, line 426 fs/minix/inode.c, line 440 fs/mpage.c, line 485 fs/mpage.c, line 696 fs/nilfs2/btnode.c, line 23 fs/nilfs2/btnode.c, line 30 fs/nilfs2/btnode.c, line 55 fs/nilfs2/btnode.c, line 130 fs/nilfs2/btnode.c, line 156 fs/nilfs2/btnode.c, line 219 fs/nilfs2/btnode.c, line 259 fs/nilfs2/btnode.h, line 33 fs/nilfs2/btnode.h, line 34 fs/nilfs2/btnode.h, line 36 fs/nilfs2/btnode.h, line 39 fs/nilfs2/btnode.h, line 41 fs/nilfs2/btnode.h, line 43 fs/nilfs2/btree.c, line 61 fs/nilfs2/btree.c, line 473 fs/nilfs2/btree.c, line 2138 fs/nilfs2/dir.c, line 96 fs/nilfs2/dir.c, line 191 fs/nilfs2/dir.c, line 422 fs/nilfs2/dir.c, line 540 fs/nilfs2/dir.c, line 581 fs/nilfs2/inode.c, line 154 fs/nilfs2/inode.c, line 238 fs/nilfs2/inode.c, line 248 fs/nilfs2/inode.c, line 268 fs/nilfs2/mdt.h, line 27 fs/nilfs2/mdt.h, line 28 fs/nilfs2/nilfs.h, line 46 fs/nilfs2/nilfs.h, line 78 fs/nilfs2/nilfs.h, line 271 fs/nilfs2/page.c, line 48 fs/nilfs2/page.c, line 156 fs/nilfs2/page.c, line 241 fs/nilfs2/page.c, line 242 fs/nilfs2/page.c, line 295 fs/nilfs2/page.c, line 296 fs/nilfs2/page.c, line 359 fs/nilfs2/page.c, line 440 fs/nilfs2/page.c, line 462 fs/nilfs2/page.h, line 35 fs/nilfs2/page.h, line 42 fs/nilfs2/page.h, line 42 fs/nilfs2/page.h, line 43 fs/nilfs2/page.h, line 43 fs/nilfs2/page.h, line 45 fs/nilfs2/page.h, line 46 fs/nilfs2/segment.c, line 687 fs/nilfs2/segment.c, line 741 fs/ntfs/aops.c, line 1546 fs/ntfs/aops.c, line 1713 fs/ntfs/attrib.c, line 2482 fs/ntfs/compress.c, line 466 fs/ntfs/file.c, line 106 fs/ntfs/file.c, line 494 fs/ntfs/file.c, line 1733 fs/ntfs/logfile.c, line 476 fs/ntfs/mft.c, line 1131 fs/ntfs/super.c, line 2448 fs/ntfs/super.c, line 2528 fs/ocfs2/alloc.c, line 6881 fs/ocfs2/aops.c, line 448 fs/ocfs2/aops.c, line 1028 fs/ocfs2/aops.c, line 1118 fs/ocfs2/aops.c, line 1222 fs/ocfs2/aops.c, line 1476 fs/ocfs2/aops.c, line 1542 fs/ocfs2/aops.c, line 1650 fs/ocfs2/aops.c, line 1886 fs/ocfs2/aops.c, line 1954 fs/ocfs2/aops.c, line 2068 fs/ocfs2/dlmglue.c, line 3926 fs/ocfs2/file.c, line 754 fs/ocfs2/file.c, line 1516 fs/ocfs2/file.c, line 1702 fs/ocfs2/mmap.c, line 54 fs/ocfs2/refcounttree.c, line 2917 fs/omfs/file.c, line 303 fs/omfs/file.c, line 308 fs/omfs/file.c, line 318 fs/omfs/file.c, line 332 fs/qnx4/inode.c, line 254 fs/qnx6/inode.c, line 186 fs/qnx6/inode.c, line 495 fs/qnx6/inode.c, line 527 fs/reiserfs/inode.c, line 2760 fs/reiserfs/inode.c, line 2888 fs/reiserfs/inode.c, line 2893 fs/reiserfs/ioctl.c, line 173 fs/reiserfs/xattr.c, line 435 fs/sysv/itree.c, line 469 fs/sysv/itree.c, line 479 fs/sysv/itree.c, line 492 fs/udf/file.c, line 90 fs/udf/file.c, line 114 fs/udf/inode.c, line 165 fs/udf/inode.c, line 187 fs/udf/inode.c, line 203 fs/udf/inode.c, line 218 fs/udf/inode.c, line 229 fs/ufs/balloc.c, line 246 fs/ufs/inode.c, line 487 fs/ufs/inode.c, line 497 fs/ufs/inode.c, line 511 fs/ufs/inode.c, line 523 fs/ufs/inode.c, line 1052 fs/ufs/util.c, line 244 include/linux/buffer_head.h, line 48 include/linux/buffer_head.h, line 73 include/linux/buffer_head.h, line 174 include/linux/buffer_head.h, line 227 include/linux/buffer_head.h, line 231 include/linux/buffer_head.h, line 234 include/linux/buffer_head.h, line 239 include/linux/buffer_head.h, line 258 include/linux/buffer_head.h, line 259 include/linux/buffer_head.h, line 260 include/linux/buffer_head.h, line 262 include/linux/buffer_head.h, line 265 include/linux/buffer_head.h, line 408 mm/filemap.c, line 120 mm/filemap.c, line 157 mm/filemap.c, line 234 mm/filemap.c, line 242 mm/filemap.c, line 269 mm/filemap.c, line 295 mm/filemap.c, line 343 mm/filemap.c, line 365 mm/filemap.c, line 379 mm/filemap.c, line 406 mm/filemap.c, line 427 mm/filemap.c, line 433 mm/filemap.c, line 439 mm/filemap.c, line 455 mm/filemap.c, line 473 mm/filemap.c, line 504 mm/filemap.c, line 551 mm/filemap.c, line 573 mm/filemap.c, line 599 mm/filemap.c, line 620 mm/filemap.c, line 628 mm/filemap.c, line 649 mm/filemap.c, line 679 mm/filemap.c, line 715 mm/filemap.c, line 758 mm/filemap.c, line 792 mm/filemap.c, line 831 mm/filemap.c, line 904 mm/filemap.c, line 912 mm/filemap.c, line 1491 mm/filemap.c, line 1592 mm/filemap.c, line 1628 mm/filemap.c, line 1658 mm/filemap.c, line 1711 mm/filemap.c, line 1761 mm/filemap.c, line 1866 mm/filemap.c, line 1940 mm/filemap.c, line 2006 mm/filemap.c, line 2062 mm/filemap.c, line 2161 mm/filemap.c, line 2467 mm/filemap.c, line 2570 mm/filemap.c, line 2621 mm/filemap.c, line 2668 mm/filemap.c, line 2792 mm/filemap.c, line 2895 mm/filemap.c, line 2944 mm/filemap.c, line 3065 mm/filemap.c, line 3088 mm/filemap.c, line 3318 mm/filemap.c, line 3329 mm/filemap.c, line 3364 mm/filemap.c, line 3446 mm/filemap.c, line 3467 mm/filemap.c, line 3572 mm/filemap.c, line 3694 mm/migrate.c, line 88 mm/migrate.c, line 150 mm/migrate.c, line 379 mm/migrate.c, line 402 mm/migrate.c, line 523 mm/migrate.c, line 697 mm/migrate.c, line 757 mm/migrate.c, line 841 mm/migrate.c, line 854 mm/migrate.c, line 864 mm/migrate.c, line 905 mm/migrate.c, line 945 mm/migrate.c, line 1288 mm/migrate.c, line 2978 mm/page-writeback.c, line 1877 mm/page-writeback.c, line 2115 mm/page-writeback.c, line 2168 mm/page-writeback.c, line 2310 mm/page-writeback.c, line 2326 mm/page-writeback.c, line 2344 mm/page-writeback.c, line 2376 mm/page-writeback.c, line 2420 mm/page-writeback.c, line 2450 mm/page-writeback.c, line 2477 mm/page-writeback.c, line 2514 mm/page-writeback.c, line 2559 mm/page-writeback.c, line 2626 mm/page-writeback.c, line 2663 mm/page-writeback.c, line 2724 mm/page-writeback.c, line 2774 mm/page_io.c, line 150 mm/page_io.c, line 308 mm/page_io.c, line 398 mm/page_io.c, line 459 mm/truncate.c, line 34 mm/truncate.c, line 46 mm/truncate.c, line 59 mm/truncate.c, line 111 mm/truncate.c, line 125 mm/truncate.c, line 177 mm/truncate.c, line 205 mm/truncate.c, line 220 mm/truncate.c, line 235 mm/truncate.c, line 257 mm/truncate.c, line 291 mm/truncate.c, line 474 mm/truncate.c, line 489 mm/truncate.c, line 546 mm/truncate.c, line 636 mm/truncate.c, line 664 mm/truncate.c, line 684 mm/truncate.c, line 781 mm/truncate.c, line 804 mm/truncate.c, line 912 mm/vmscan.c, line 753 mm/vmscan.c, line 778 mm/vmscan.c, line 852 mm/vmscan.c, line 948 mm/vmscan.c, line 1041 mm/vmscan.c, line 1086 mm/vmscan.c, line 1569