zfs-builds-mm/zfs-0.8.1/config/kernel-inode-set-iversion.m4

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dnl #
dnl # 4.16 API change
dnl # inode_set_iversion introduced to set i_version
dnl #
AC_DEFUN([ZFS_AC_KERNEL_INODE_SET_IVERSION], [
AC_MSG_CHECKING([whether inode_set_iversion() exists])
ZFS_LINUX_TRY_COMPILE([
#include <linux/iversion.h>
],[
struct inode inode;
inode_set_iversion(&inode, 1);
],[
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_INODE_SET_IVERSION, 1,
[inode_set_iversion() exists])
],[
AC_MSG_RESULT(no)
])
])