zfs/config/kernel-dentry-alias.m4

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dnl #
dnl # 3.18 API change
dnl # Dentry aliases are in d_u struct dentry member
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_DENTRY_ALIAS_D_U], [
ZFS_LINUX_TEST_SRC([dentry_alias_d_u], [
#include <linux/fs.h>
#include <linux/dcache.h>
#include <linux/list.h>
], [
struct inode *inode __attribute__ ((unused)) = NULL;
struct dentry *dentry __attribute__ ((unused)) = NULL;
hlist_for_each_entry(dentry, &inode->i_dentry,
d_u.d_alias) {
d_drop(dentry);
}
])
])
AC_DEFUN([ZFS_AC_KERNEL_DENTRY_ALIAS_D_U], [
AC_MSG_CHECKING([whether dentry aliases are in d_u member])
ZFS_LINUX_TEST_RESULT([dentry_alias_d_u], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_DENTRY_D_U_ALIASES, 1,
[dentry aliases are in d_u member])
],[
AC_MSG_RESULT(no)
])
])