LU-13745 llite: switch generic_file_splice_read() to use of ->read_iter()

[fs/lustre-release.git] / lustre / autoconf / lustre-core.m4

diff --git a/lustre/autoconf/lustre-core.m4 b/lustre/autoconf/lustre-core.m4
index be33743..e9b2928 100644 (file)
--- a/lustre/autoconf/lustre-core.m4
+++ b/lustre/autoconf/lustre-core.m4
@@ -1547,6 +1547,19 @@ fop_iterate_shared, [
 ]) # LC_FOP_ITERATE_SHARED
 
 #
+# LC_EXPORT_DEFAULT_FILE_SPLICE_READ
+#
+# 4.8-rc8 commit 82c156f853840645604acd7c2cebcb75ed1b6652 switched
+# generic_file_splice_read() to using ->read_iter. We can test this
+# change since default_file_splice_read() is no longer exported.
+#
+AC_DEFUN([LC_EXPORT_DEFAULT_FILE_SPLICE_READ], [
+LB_CHECK_EXPORT([default_file_splice_read], [fs/splice.c],
+       [AC_DEFINE(HAVE_DEFAULT_FILE_SPLICE_READ_EXPORT, 1,
+                       [default_file_splice_read is exported])])
+]) # LC_EXPORT_DEFAULT_FILE_SPLCE_READ
+
+#
 # LC_HAVE_POSIX_ACL_VALID_USER_NS
 #
 # 4.8 posix_acl_valid takes struct user_namespace
@@ -2387,6 +2400,7 @@ AC_DEFUN([LC_PROG_LINUX], [
        LC_FOP_ITERATE_SHARED
 
        # 4.8
+       LC_EXPORT_DEFAULT_FILE_SPLICE_READ
        LC_HAVE_POSIX_ACL_VALID_USER_NS
        LC_D_COMPARE_4ARGS
        LC_FULL_NAME_HASH_3ARGS