Extern or forward variable declaration at include/linux/swap.h, line 95 References: fs/buffer.c, line 1645 fs/buffer.c, line 2660 fs/buffer.c, line 2860 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/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/reiserfs/inode.c, line 2317 fs/reiserfs/inode.c, line 2532 include/linux/swap.h, line 95 include/linux/swap.h, line 276 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