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Revert "Linux 6.5 compat: register_sysctl_table removed"

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This reverts commit b35374fd64 as there
are error messages when loading the SPL module. Errors seemed to be tied
to duplicate a duplicate entry.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Brian Atkinson <batkinson@lanl.gov>
Closes #15134
This commit is contained in:
Brian Atkinson 2023-08-01 17:48:19 -04:00 committed by Brian Behlendorf
parent 8be6308e85
commit 3a68f3c50f
3 changed files with 3 additions and 52 deletions
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27
config/kernel-register_sysctl_table.m4
View File

@ -1,27 +0,0 @@
dnl #
dnl # Linux 6.5 removes register_sysctl_table
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_REGISTER_SYSCTL_TABLE], [
ZFS_LINUX_TEST_SRC([has_register_sysctl_table], [
#include <linux/sysctl.h>
static struct ctl_table dummy_table[] = {
{}
};
],[
struct ctl_table_header *h
__attribute((unused)) = register_sysctl_table(dummy_table);
])
])
AC_DEFUN([ZFS_AC_KERNEL_REGISTER_SYSCTL_TABLE], [
AC_MSG_CHECKING([whether register_sysctl_table exists])
ZFS_LINUX_TEST_RESULT([has_register_sysctl_table], [
AC_MSG_RESULT([yes])
AC_DEFINE(HAVE_SYSCTL_REGISTER_TABLE, 1,
[sysctl_register_table exists])
],[
AC_MSG_RESULT([no])
])
])

2
config/kernel.m4
View File

@ -160,7 +160,6 @@ AC_DEFUN([ZFS_AC_KERNEL_TEST_SRC], [
ZFS_AC_KERNEL_SRC_FILEMAP ZFS_AC_KERNEL_SRC_FILEMAP
ZFS_AC_KERNEL_SRC_WRITEPAGE_T ZFS_AC_KERNEL_SRC_WRITEPAGE_T
ZFS_AC_KERNEL_SRC_RECLAIMED ZFS_AC_KERNEL_SRC_RECLAIMED
ZFS_AC_KERNEL_SRC_REGISTER_SYSCTL_TABLE
case "$host_cpu" in case "$host_cpu" in
powerpc*) powerpc*)
ZFS_AC_KERNEL_SRC_CPU_HAS_FEATURE ZFS_AC_KERNEL_SRC_CPU_HAS_FEATURE
@ -300,7 +299,6 @@ AC_DEFUN([ZFS_AC_KERNEL_TEST_RESULT], [
ZFS_AC_KERNEL_FILEMAP ZFS_AC_KERNEL_FILEMAP
ZFS_AC_KERNEL_WRITEPAGE_T ZFS_AC_KERNEL_WRITEPAGE_T
ZFS_AC_KERNEL_RECLAIMED ZFS_AC_KERNEL_RECLAIMED
ZFS_AC_KERNEL_REGISTER_SYSCTL_TABLE
case "$host_cpu" in case "$host_cpu" in
powerpc*) powerpc*)
ZFS_AC_KERNEL_CPU_HAS_FEATURE ZFS_AC_KERNEL_CPU_HAS_FEATURE

26
module/os/linux/spl/spl-proc.c
View File

@ -624,7 +624,6 @@ static struct ctl_table spl_table[] = {
.mode = 0644, .mode = 0644,
.proc_handler = &proc_dohostid, .proc_handler = &proc_dohostid,
}, },
#ifdef HAVE_REGISTER_SYSCTL_TABLE
{ {
.procname = "kmem", .procname = "kmem",
.mode = 0555, .mode = 0555,
@ -635,11 +634,9 @@ static struct ctl_table spl_table[] = {
.mode = 0555, .mode = 0555,
.child = spl_kstat_table, .child = spl_kstat_table,
}, },
#endif
{}, {},
}; };
#ifdef HAVE_REGISTER_SYSCTL_TABLE
static struct ctl_table spl_dir[] = { static struct ctl_table spl_dir[] = {
{ {
.procname = "spl", .procname = "spl",
@ -651,38 +648,21 @@ static struct ctl_table spl_dir[] = {
static struct ctl_table spl_root[] = { static struct ctl_table spl_root[] = {
{ {
.procname = "kernel", .procname = "kernel",
.mode = 0555, .mode = 0555,
.child = spl_dir, .child = spl_dir,
}, },
{} {}
}; };
#endif
int int
spl_proc_init(void) spl_proc_init(void)
{ {
int rc = 0; int rc = 0;
#ifdef HAVE_REGISTER_SYSCTL_TABLE
spl_header = register_sysctl_table(spl_root); spl_header = register_sysctl_table(spl_root);
if (spl_header == NULL) if (spl_header == NULL)
return (-EUNATCH); return (-EUNATCH);
#else
spl_header = register_sysctl("kernel/spl", spl_table);
if (spl_header == NULL)
return (-EUNATCH);
if (register_sysctl("kernel/spl/kmem", spl_kmem_table) == NULL) {
rc = -EUNATCH;
goto out;
}
if (register_sysctl("kernel/spl/kstat", spl_kstat_table) == NULL) {
rc = -EUNATCH;
goto out;
}
#endif
proc_spl = proc_mkdir("spl", NULL); proc_spl = proc_mkdir("spl", NULL);
if (proc_spl == NULL) { if (proc_spl == NULL) {