LB_DEFINE_LDISKFS_OPTIONS
-AC_MSG_CHECKING([whether to build ldisk based on ext4])
-AC_ARG_ENABLE([ext4],
- AC_HELP_STRING([--disable-ext4],
- [enable building of ldiskfs based on ext4]),[],
- [LC_KERNEL_WITH_EXT4([enable_ext4='yes'],
- [enable_ext4='no'])])
+AC_MSG_CHECKING([whether to build ldiskfs based on ext4])
+if test x$RHEL_KERNEL = xyes; then
+ AC_ARG_ENABLE([ext4],
+ AC_HELP_STRING([--enable-ext4],
+ [enable building of ldiskfs based on ext4]),
+ [], [enable_ext4='no'])
+else
+ case $LINUXRELEASE in
+ # ext4 was in 2.6.22-2.6.26 but not stable enough to use
+ 2.6.2[0-6]*) enable_ext4='no' ;;
+ *) LC_KERNEL_WITH_EXT4([enable_ext4='yes'],
+ [enable_ext4='no']) ;;
+ esac
+fi
AC_MSG_RESULT([$enable_ext4])
-# Remove this part when RHEL5 ext4 patches landed.
-case $LINUXRELEASE in
-2.6.18*) if test x$RHEL_KENEL = xyes; then
- enable_ext4=no
- fi
-;;
-esac
-
if test x$enable_ext4 = xyes ; then
- AC_DEFINE(HAVE_EXT4_LDISKFS, 1, [ldiskfs based on ext4])
- BACKFS=ext4
+ AC_DEFINE(HAVE_EXT4_LDISKFS, 1, [ldiskfs based on ext4])
+ BACKFS=ext4
else
- BACKFS=ext3
+ BACKFS=ext3
fi
+
AC_SUBST(BACKFS)
BACKFSU=${BACKFS/ext/EXT}
AC_SUBST(BACKFSU) # We need a Upper string