AS_IF([test x$RHEL_KERNEL = xyes], [
case $RHEL_RELEASE_NO in
80) LDISKFS_SERIES="4.18-rhel8.series" ;;
+ 77) LDISKFS_SERIES="3.10-rhel7.7.series" ;;
76) LDISKFS_SERIES="3.10-rhel7.6.series" ;;
75) LDISKFS_SERIES="3.10-rhel7.5.series" ;;
74) LDISKFS_SERIES="3.10-rhel7.4.series" ;;
]) # LDISKFS_AC_PATCH_PROGRAM
#
+# LB_HAVE_BVEC_ITER_ALL
+#
+# kernel 5.1 commit 6dc4f100c175dd0511ae8674786e7c9006cdfbfa
+# block: allow bio_for_each_segment_all() to iterate over multi-page bvec
+#
+AC_DEFUN([LB_HAVE_BVEC_ITER_ALL], [
+tmp_flags="$EXTRA_KCFLAGS"
+EXTRA_KCFLAGS="-Werror"
+LB_CHECK_COMPILE([if bvec_iter_all exists for multi-page bvec iternation],
+ext4fs_dirhash, [
+ #include <linux/bvec.h>
+],[
+ struct bvec_iter_all iter;
+ (void)iter;
+],[
+ AC_DEFINE(HAVE_BVEC_ITER_ALL, 1,
+ [if bvec_iter_all exists for multi-page bvec iternation])
+])
+EXTRA_KCFLAGS="$tmp_flags"
+]) # LB_HAVE_BVEC_ITER_ALL
+
+#
# LB_CONFIG_LDISKFS
#
AC_DEFUN([LB_CONFIG_LDISKFS], [
LB_EXT4_HAVE_INFO_DQUOT
LB_EXT4_HAVE_I_CRYPT_INFO
LB_LDISKFS_IGET_HAS_FLAGS_ARG
+ LB_HAVE_BVEC_ITER_ALL
AC_DEFINE(CONFIG_LDISKFS_FS_POSIX_ACL, 1, [posix acls for ldiskfs])
AC_DEFINE(CONFIG_LDISKFS_FS_SECURITY, 1, [fs security for ldiskfs])
AC_DEFINE(CONFIG_LDISKFS_FS_XATTR, 1, [extened attributes for ldiskfs])