2.5.14 -- fs/fs.o: In function `end_buffer_read_file_async': undefined

[Miles Lane]

fs/fs.o: In function `end_buffer_read_file_async':
fs/fs.o(.text+0x705a4): undefined reference to `clear_buffer_async'
fs/fs.o(.text+0x705c9): undefined reference to `buffer_async'
fs/fs.o: In function `ntfs_file_read_block':
fs/fs.o(.text+0x70a5c): undefined reference to `set_buffer_async'
fs/fs.o: In function `end_buffer_read_mftbmp_async':
fs/fs.o(.text+0x70e34): undefined reference to `clear_buffer_async'
fs/fs.o(.text+0x70e59): undefined reference to `buffer_async'
fs/fs.o: In function `ntfs_mftbmp_readpage':
fs/fs.o(.text+0x7125c): undefined reference to `set_buffer_async'
fs/fs.o: In function `end_buffer_read_mst_async':
fs/fs.o(.text+0x71411): undefined reference to `clear_buffer_async'
fs/fs.o(.text+0x71439): undefined reference to `buffer_async'
fs/fs.o: In function `ntfs_mst_readpage':
fs/fs.o(.text+0x719fc): undefined reference to `set_buffer_async'
make: *** [vmlinux] Error 1

CONFIG_X86=y
CONFIG_ISA=y
CONFIG_UID16=y
CONFIG_MK7=y

#
# File systems
#
CONFIG_AUTOFS4_FS=y
CONFIG_REISERFS_FS=y
CONFIG_REISERFS_CHECK=y
CONFIG_REISERFS_PROC_INFO=y
CONFIG_HFS_FS=y
CONFIG_EXT3_FS=y
CONFIG_JBD=y
CONFIG_JBD_DEBUG=y
CONFIG_FAT_FS=m
CONFIG_VFAT_FS=m
CONFIG_TMPFS=y
CONFIG_RAMFS=y
CONFIG_ISO9660_FS=y
CONFIG_JOLIET=y
CONFIG_ZISOFS=y
CONFIG_JFS_FS=y
CONFIG_JFS_DEBUG=y
CONFIG_JFS_STATISTICS=y
CONFIG_NTFS_FS=y
CONFIG_NTFS_DEBUG=y
CONFIG_PROC_FS=y
CONFIG_DEVPTS_FS=y
CONFIG_EXT2_FS=y
CONFIG_UDF_FS=y