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config: remove HAVE_GET_LINK_COOKIE

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As far as I can tell, this never made it to a real release. It was
introduced in 6b2553918d8b and removed a couple of weeks later in
fceef393a538. This was all part of the development of what would become
4.5. So I assume this was OpenZFS chasing upstream development at the
time.

    fceef393a538 viro 2015-12-30 switch ->get_link() to delayed_call, kill ->put_link()
    cd3417c8fc95 viro 2015-12-29 kill free_page_put_link()
    0d0def49d05a viro 2015-12-08 teach nfs_get_link() to work in RCU mode
    1a384eaac265 viro 2015-12-08 teach proc_self_get_link()/proc_thread_self_get_link() to work in RCU mode
    6a6c99049635 viro 2015-12-08 teach shmem_get_link() to work in RCU mode
    d3883d4f9344 viro 2015-12-08 teach page_get_link() to work in RCU mode
    6b2553918d8b viro 2015-12-08 replace ->follow_link() with new method that could stay in RCU mode

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
This commit is contained in:
Rob Norris 2024-08-05 22:19:15 +10:00 committed by Brian Behlendorf
parent 9a1c7240ba
commit 96b0785f52
1 changed files with 8 additions and 34 deletions
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42
config/kernel-get-link.m4
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@ -13,16 +13,6 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_GET_LINK], [
};
],[])
ZFS_LINUX_TEST_SRC([inode_operations_get_link_cookie], [
#include <linux/fs.h>
static const char *get_link(struct dentry *de, struct
inode *ip, void **cookie) { return "symlink"; }
static struct inode_operations
iops __attribute__ ((unused)) = {
.get_link = get_link,
};
],[])
ZFS_LINUX_TEST_SRC([inode_operations_follow_link], [
#include <linux/fs.h>
static const char *follow_link(struct dentry *de,
@ -48,34 +38,18 @@ AC_DEFUN([ZFS_AC_KERNEL_GET_LINK], [
AC_MSG_RESULT(no)
dnl #
dnl # 4.5 API change
dnl # The follow_link() interface has been replaced by
dnl # get_link() which behaves the same as before except:
dnl # - An inode is passed as a separate argument
dnl # - When called in RCU mode a NULL dentry is passed.
dnl # 4.2 API change
dnl # This kernel retired the nameidata structure.
dnl #
AC_MSG_CHECKING([whether iops->get_link() passes cookie])
ZFS_LINUX_TEST_RESULT([inode_operations_get_link_cookie], [
AC_MSG_CHECKING(
[whether iops->follow_link() passes cookie])
ZFS_LINUX_TEST_RESULT([inode_operations_follow_link], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_GET_LINK_COOKIE, 1,
[iops->get_link() cookie])
AC_DEFINE(HAVE_FOLLOW_LINK_COOKIE, 1,
[iops->follow_link() cookie])
],[
AC_MSG_RESULT(no)
dnl #
dnl # 4.2 API change
dnl # This kernel retired the nameidata structure.
dnl #
AC_MSG_CHECKING(
[whether iops->follow_link() passes cookie])
ZFS_LINUX_TEST_RESULT([inode_operations_follow_link], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_FOLLOW_LINK_COOKIE, 1,
[iops->follow_link() cookie])
],[
AC_MSG_RESULT(no)
ZFS_LINUX_TEST_ERROR([get_link])
])
ZFS_LINUX_TEST_ERROR([get_link])
])
])
])