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Rob Norris
65b4a5c551
The d_u union introduced in 3.18 is now anonymous, so we need to detect
it and decide the right way to name d_alias.
Note that we used to have support for both names to support kernels
before 3.18, so this commit is effectively reverting the commit that
removed that support, efc293e371.
Sponsored-by: TrueNAS
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Rob Norris <rob.norris@truenas.com>
Closes #18471
33 lines
840 B
Plaintext
33 lines
840 B
Plaintext
dnl # SPDX-License-Identifier: CDDL-1.0
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dnl #
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dnl # 7.1 API change
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dnl # d_u union in struct dentry is now anonmymous, so d_alias must be
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dnl # named directly
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_SRC_DENTRY_ALIAS_D_U], [
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ZFS_LINUX_TEST_SRC([dentry_alias_d_u], [
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#include <linux/fs.h>
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#include <linux/dcache.h>
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#include <linux/list.h>
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], [
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struct inode *inode __attribute__ ((unused)) = NULL;
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struct dentry *dentry __attribute__ ((unused)) = NULL;
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hlist_for_each_entry(dentry, &inode->i_dentry,
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d_u.d_alias) {
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d_drop(dentry);
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}
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])
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])
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AC_DEFUN([ZFS_AC_KERNEL_DENTRY_ALIAS_D_U], [
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AC_MSG_CHECKING([whether dentry aliases are in d_u member])
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ZFS_LINUX_TEST_RESULT([dentry_alias_d_u], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_DENTRY_D_U_ALIASES, 1,
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[dentry aliases are in d_u member])
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],[
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AC_MSG_RESULT(no)
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])
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])
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