mirror_zfs/config/kernel-vfs-writepage.m4
Rob Norris 85391ee931 build: add SPDX license tags to build system files
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Signed-off-by: Rob Norris <robn@despairlabs.com>
Closes #18077
2026-01-08 15:08:03 -08:00

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dnl # SPDX-License-Identifier: CDDL-1.0
dnl #
dnl # Linux 6.16 removes address_space_operations ->writepage
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_VFS_WRITEPAGE], [
ZFS_LINUX_TEST_SRC([vfs_has_writepage], [
#include <linux/fs.h>
static const struct address_space_operations
aops __attribute__ ((unused)) = {
.writepage = NULL,
};
],[])
])
AC_DEFUN([ZFS_AC_KERNEL_VFS_WRITEPAGE], [
AC_MSG_CHECKING([whether aops->writepage exists])
ZFS_LINUX_TEST_RESULT([vfs_has_writepage], [
AC_MSG_RESULT([yes])
AC_DEFINE(HAVE_VFS_WRITEPAGE, 1,
[address_space_operations->writepage exists])
],[
AC_MSG_RESULT([no])
])
])