LU-16118 build: Use pde_data() when available

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

diff --git a/libcfs/autoconf/lustre-libcfs.m4 b/libcfs/autoconf/lustre-libcfs.m4
index 459ca0d..7a533ad 100644 (file)
--- a/libcfs/autoconf/lustre-libcfs.m4
+++ b/libcfs/autoconf/lustre-libcfs.m4
@@ -1982,6 +1982,30 @@ EXTRA_KCFLAGS="$tmp_flags"
 ]) # LIBCFS_LINUX_BLK_INTEGRITY_HEADER
 
 #
+# LIBCFS_PDE_DATA_EXISTS
+#
+# Linux commit v5.16-11573-g6dfbbae14a7b
+#    introduce pde_data()
+# Linux commit v5.16-11574-g359745d78351
+#    remove PDE_DATA()
+#
+AC_DEFUN([LIBCFS_PDE_DATA_EXISTS],[
+LB_CHECK_COMPILE([does function 'pde_data' exist],
+pde_data, [
+               #include <linux/proc_fs.h>
+       ],[
+               struct inode *inode = NULL;
+               void *data =pde_data(inode);
+               (void)data;
+       ],[
+               AC_DEFINE(HAVE_pde_data, 1, [function pde_data() available])
+       ],[
+               AC_DEFINE(pde_data(inode), PDE_DATA(inode),
+                         [function pde_data() unavailable])
+       ])
+]) # LIBCFS_PDE_DATA_EXISTS
+
+#
 # LIBCFS_PROG_LINUX
 #
 # LibCFS linux kernel checks
@@ -2130,6 +2154,8 @@ LIBCFS_HAVE_PANIC_NOTIFIER_HEADER
 # 5.15
 LIBCFS_PARAM_SET_UINT_MINMAX
 LIBCFS_LINUX_BLK_INTEGRITY_HEADER
+# 5.17
+LIBCFS_PDE_DATA_EXISTS
 ]) # LIBCFS_PROG_LINUX
 
 #