freebsd-dev/config/kernel-inode-set-iversion.m4
Brian Behlendorf 18f57327e0 Linux 4.16 compat: inode_set_iversion()
A new interface was added to manipulate the version field of an
inode.  Add a inode_set_iversion() wrapper for older kernels and
use the new interface when available.

The i_version field was dropped from the trace point due to the
switch to an atomic64_t i_version type.

Reviewed-by: Olaf Faaland <faaland1@llnl.gov>
Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Reviewed-by: Chunwei Chen <david.chen@nutanix.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #7148
2018-02-08 21:25:19 -08:00

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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)
])
])