Hardwire NFS O_DIRECT support into the kernel build for now. For testing coverage. fs/Kconfig | 5 +++-- 1 files changed, 3 insertions(+), 2 deletions(-) diff -puN fs/Kconfig~nfs-O_DIRECT-always-enabled fs/Kconfig --- 25/fs/Kconfig~nfs-O_DIRECT-always-enabled 2003-10-01 22:53:08.000000000 -0700 +++ 25-akpm/fs/Kconfig 2003-10-01 22:53:08.000000000 -0700 @@ -1310,8 +1310,9 @@ config NFS_V4 If unsure, say N. config NFS_DIRECTIO - bool "Allow direct I/O on NFS files (EXPERIMENTAL)" - depends on NFS_FS && EXPERIMENTAL + bool + depends on NFS_FS + default y help This option enables applications to perform uncached I/O on files in NFS file systems using the O_DIRECT open() flag. When O_DIRECT _