mirror_zfs/config/kernel-vfs-migratepage.m4
Tony Hutter ab9bb193f9
Linux 6.0 compat: Check for migratepage VFS (#17217)
The 6.0 kernel removes the 'migratepage' VFS op. Check for
migratepage.

Signed-off-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Rob Norris <robn@despairlabs.com>
Reviewed-by: Alexander Motin <mav@FreeBSD.org
2025-04-10 17:36:31 -07:00

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dnl #
dnl # Linux 6.0 gets rid of address_space_operations.migratepage
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_VFS_MIGRATEPAGE], [
ZFS_LINUX_TEST_SRC([vfs_has_migratepage], [
#include <linux/fs.h>
#include <linux/migrate.h>
static const struct address_space_operations
aops __attribute__ ((unused)) = {
.migratepage = migrate_page,
};
],[])
])
AC_DEFUN([ZFS_AC_KERNEL_VFS_MIGRATEPAGE], [
dnl #
dnl # Linux 6.0 gets rid of address_space_operations.migratepage
dnl #
AC_MSG_CHECKING([whether migratepage exists])
ZFS_LINUX_TEST_RESULT([vfs_has_migratepage], [
AC_MSG_RESULT([yes])
AC_DEFINE(HAVE_VFS_MIGRATEPAGE, 1, [migratepage exists])
],[
AC_MSG_RESULT([no])
])
])