Extern or forward variable declaration at include/linux/swap.h, line 125 References: drivers/staging/lustre/lustre/llite/rw.c, line 1146 drivers/staging/lustre/lustre/llite/rw.c, line 1240 drivers/staging/zcache/zcache-main.c, line 986 fs/block_dev.c, line 296 fs/btrfs/disk-io.c, line 979 fs/btrfs/extent_io.c, line 2937 fs/btrfs/extent_io.c, line 2952 fs/btrfs/extent_io.c, line 3347 fs/btrfs/extent_io.c, line 3397 fs/btrfs/extent_io.c, line 3536 fs/btrfs/extent_io.c, line 3678 fs/btrfs/extent_io.c, line 3714 fs/btrfs/extent_io.c, line 3743 fs/btrfs/inode.c, line 5207 fs/btrfs/inode.c, line 7351 fs/btrfs/inode.c, line 7366 fs/buffer.c, line 1672 fs/buffer.c, line 2668 fs/buffer.c, line 2873 fs/buffer.c, line 2914 fs/cifs/file.c, line 1879 fs/cifs/file.c, line 2089 fs/cifs/file.c, line 2127 fs/cifs/file.c, line 3587 fs/f2fs/checkpoint.c, line 78 fs/f2fs/checkpoint.c, line 101 fs/f2fs/checkpoint.c, line 128 fs/f2fs/checkpoint.c, line 604 fs/f2fs/node.c, line 1025 fs/f2fs/node.c, line 1128 fs/f2fs/node.c, line 1174 fs/fuse/file.c, line 1549 fs/gfs2/aops.c, line 97 fs/gfs2/aops.c, line 132 fs/gfs2/aops.c, line 151 fs/gfs2/aops.c, line 180 fs/gfs2/aops.c, line 205 fs/gfs2/aops.c, line 241 fs/gfs2/aops.c, line 258 fs/gfs2/aops.c, line 330 fs/gfs2/aops.c, line 393 fs/gfs2/meta_io.c, line 36 fs/nfs/write.c, line 226 fs/nfs/write.c, line 330 fs/nfs/write.c, line 350 fs/nfs/write.c, line 368 fs/nfs/write.c, line 377 fs/nfs/write.c, line 386 fs/nfs/write.c, line 1676 fs/nfs/write.c, line 1712 fs/nfs/write.c, line 1718 fs/nfs/write.c, line 1729 fs/nfs/write.c, line 1776 fs/nilfs2/mdt.c, line 376 fs/ntfs/aops.c, line 551 fs/ntfs/aops.c, line 921 fs/ntfs/aops.c, line 1354 fs/ocfs2/aops.c, line 405 fs/reiserfs/inode.c, line 1636 fs/reiserfs/inode.c, line 2347 fs/reiserfs/inode.c, line 2562 fs/xfs/xfs_aops.c, line 400 fs/xfs/xfs_aops.c, line 483 fs/xfs/xfs_aops.c, line 690 fs/xfs/xfs_aops.c, line 818 fs/xfs/xfs_aops.c, line 930 fs/xfs/xfs_aops.c, line 1156 include/linux/swap.h, line 125 include/linux/swap.h, line 340 include/linux/swap.h, line 342 include/linux/swap.h, line 466 mm/filemap.c, line 221 mm/migrate.c, line 597 mm/page-writeback.c, line 1727 mm/page-writeback.c, line 1886 mm/page-writeback.c, line 1904 mm/page-writeback.c, line 1921 mm/page-writeback.c, line 1947 mm/page-writeback.c, line 2081 mm/page_io.c, line 232 mm/page_io.c, line 251 mm/shmem.c, line 782 mm/swapfile.c, line 1292 mm/vmscan.c, line 420 mm/zswap.c, line 506