LU-6215 llite: handle removal of ki_nbytes in struct kiocb

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

diff --git a/lustre/autoconf/lustre-core.m4 b/lustre/autoconf/lustre-core.m4
index 1b425c0..79a01c8 100644 (file)
--- a/lustre/autoconf/lustre-core.m4
+++ b/lustre/autoconf/lustre-core.m4
@@ -1629,6 +1629,24 @@ direct_io_iter, [
 ]) # LC_DIRECTIO_USE_ITER
 
 #
+# LC_KIOCB_HAS_NBYTES
+#
+# 3.19 kernel removed ki_nbytes from struct kiocb
+#
+AC_DEFUN([LC_KIOCB_HAS_NBYTES], [
+LB_CHECK_COMPILE([if struct kiocb has ki_nbytes field],
+ki_nbytes, [
+       #include <linux/fs.h>
+],[
+       struct kiocb iocb;
+
+       iocb.ki_nbytes = 0;
+],[
+       AC_DEFINE(HAVE_KI_NBYTES, 1, [ki_nbytes field exist])
+])
+]) # LC_KIOCB_HAS_NBYTES
+
+#
 # LC_CANCEL_DIRTY_PAGE
 #
 # 4.0.0 kernel removed cancle_dirty_page
@@ -1797,6 +1815,9 @@ AC_DEFUN([LC_PROG_LINUX], [
        # 3.16
        LC_DIRECTIO_USE_ITER
 
+       # 3.19
+       LC_KIOCB_HAS_NBYTES
+
        # 4.0.0
        LC_CANCEL_DIRTY_PAGE