mirror_zfs/config/kernel-dentry-operations.m4
Rob Norris 8e002ee26e config: remove HAVE_D_PRUNE_ALIASES
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de>
Signed-off-by: Rob Norris <robn@despairlabs.com>
Closes #16479
2024-09-18 11:23:49 -07:00

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dnl #
dnl # 2.6.28 API change
dnl # Added d_obtain_alias() helper function.
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_D_OBTAIN_ALIAS], [
ZFS_LINUX_TEST_SRC([d_obtain_alias], [
#include <linux/dcache.h>
], [
d_obtain_alias(NULL);
])
])
AC_DEFUN([ZFS_AC_KERNEL_D_OBTAIN_ALIAS], [
AC_MSG_CHECKING([whether d_obtain_alias() is available])
ZFS_LINUX_TEST_RESULT_SYMBOL([d_obtain_alias],
[d_obtain_alias], [fs/dcache.c], [
AC_MSG_RESULT(yes)
], [
ZFS_LINUX_TEST_ERROR([d_obtain_alias()])
])
])
dnl #
dnl # 2.6.38 API change
dnl # Added d_set_d_op() helper function.
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_D_SET_D_OP], [
ZFS_LINUX_TEST_SRC([d_set_d_op], [
#include <linux/dcache.h>
], [
d_set_d_op(NULL, NULL);
])
])
AC_DEFUN([ZFS_AC_KERNEL_D_SET_D_OP], [
AC_MSG_CHECKING([whether d_set_d_op() is available])
ZFS_LINUX_TEST_RESULT_SYMBOL([d_set_d_op],
[d_set_d_op], [fs/dcache.c], [
AC_MSG_RESULT(yes)
], [
ZFS_LINUX_TEST_ERROR([d_set_d_op])
])
])
dnl #
dnl # 3.6 API change
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_D_REVALIDATE_NAMEIDATA], [
ZFS_LINUX_TEST_SRC([dentry_operations_revalidate], [
#include <linux/dcache.h>
#include <linux/sched.h>
static int revalidate (struct dentry *dentry,
struct nameidata *nidata) { return 0; }
static const struct dentry_operations
dops __attribute__ ((unused)) = {
.d_revalidate = revalidate,
};
],[])
])
AC_DEFUN([ZFS_AC_KERNEL_D_REVALIDATE_NAMEIDATA], [
AC_MSG_CHECKING([whether dops->d_revalidate() takes struct nameidata])
ZFS_LINUX_TEST_RESULT([dentry_operations_revalidate], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_D_REVALIDATE_NAMEIDATA, 1,
[dops->d_revalidate() operation takes nameidata])
],[
AC_MSG_RESULT(no)
])
])
dnl #
dnl # 2.6.38 API change
dnl # Added sb->s_d_op default dentry_operations member
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_S_D_OP], [
ZFS_LINUX_TEST_SRC([super_block_s_d_op], [
#include <linux/fs.h>
],[
struct super_block sb __attribute__ ((unused));
sb.s_d_op = NULL;
])
])
AC_DEFUN([ZFS_AC_KERNEL_S_D_OP], [
AC_MSG_CHECKING([whether super_block has s_d_op])
ZFS_LINUX_TEST_RESULT([super_block_s_d_op], [
AC_MSG_RESULT(yes)
], [
ZFS_LINUX_TEST_ERROR([super_block s_d_op])
])
])
AC_DEFUN([ZFS_AC_KERNEL_SRC_DENTRY], [
ZFS_AC_KERNEL_SRC_D_OBTAIN_ALIAS
ZFS_AC_KERNEL_SRC_D_SET_D_OP
ZFS_AC_KERNEL_SRC_D_REVALIDATE_NAMEIDATA
ZFS_AC_KERNEL_SRC_S_D_OP
])
AC_DEFUN([ZFS_AC_KERNEL_DENTRY], [
ZFS_AC_KERNEL_D_OBTAIN_ALIAS
ZFS_AC_KERNEL_D_SET_D_OP
ZFS_AC_KERNEL_D_REVALIDATE_NAMEIDATA
ZFS_AC_KERNEL_S_D_OP
])