LU-14651 llite: extend inode methods with user namespace arg

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

diff --git a/lustre/autoconf/lustre-core.m4 b/lustre/autoconf/lustre-core.m4
index 9247f24..8a66bd9 100644 (file)
--- a/lustre/autoconf/lustre-core.m4
+++ b/lustre/autoconf/lustre-core.m4
@@ -1897,8 +1897,8 @@ LB_CHECK_COMPILE([if 'struct vm_fault' replaced virtual_address with address fie
 vm_fault_address, [
        #include <linux/mm.h>
 ],[
-       struct vm_fault vmf;
-       vmf.address = NULL;
+       unsigned long vaddr = ((struct vm_fault *)0)->address;
+       (void)vaddr;
 ],[
        AC_DEFINE(HAVE_VM_FAULT_ADDRESS, 1,
                [virtual_address has been replaced by address field])
@@ -2457,9 +2457,6 @@ lock_manager_ops_lm_compare_owner, [
 EXTRA_KCFLAGS="$tmp_flags"
 ]) # LC_LM_COMPARE_OWNER_EXISTS
 
-AC_DEFUN([LC_PROG_LINUX_SRC], [])
-AC_DEFUN([LC_PROG_LINUX_RESULTS], [])
-
 #
 # LC_FSCRYPT_SUPPORT
 #
@@ -2478,6 +2475,32 @@ fscrypt_support, [
 ]) # LC_FSCRYPT_SUPPORT
 
 #
+# LC_HAVE_USER_NAMESPACE_ARG
+#
+# kernel 5.12 commit 549c7297717c32ee53f156cd949e055e601f67bb
+# fs: make helpers idmap mount aware
+# Extend some inode methods with an additional user namespace argument.
+#
+AC_DEFUN([LC_HAVE_USER_NAMESPACE_ARG], [
+tmp_flags="$EXTRA_KCFLAGS"
+EXTRA_KCFLAGS="-Werror"
+LB_CHECK_COMPILE([if 'inode_operations' members have user namespace argument],
+user_namespace_argument, [
+       #include <linux/fs.h>
+],[
+       ((struct inode_operations *)1)->getattr((struct user_namespace *)NULL,
+                                               NULL, NULL, 0, 0);
+],[
+       AC_DEFINE(HAVE_USER_NAMESPACE_ARG, 1,
+               ['inode_operations' members have user namespace argument])
+])
+EXTRA_KCFLAGS="$tmp_flags"
+]) # LC_HAVE_USER_NAMESPACE_ARG
+
+AC_DEFUN([LC_PROG_LINUX_SRC], [])
+AC_DEFUN([LC_PROG_LINUX_RESULTS], [])
+
+#
 # LC_PROG_LINUX
 #
 # Lustre linux kernel checks
@@ -2659,6 +2682,9 @@ AC_DEFUN([LC_PROG_LINUX], [
        LC_BIO_BI_PHYS_SEGMENTS
        LC_LM_COMPARE_OWNER_EXISTS
 
+       # 5.12
+       LC_HAVE_USER_NAMESPACE_ARG
+
        # kernel patch to extend integrity interface
        LC_BIO_INTEGRITY_PREP_FN