I found why first version should be rejected, and, no, it is not
documentation updates. Here is version 2:



[PATCH 2/2] sysctl: remove CTL_UNNUMBERED

CTL_UNNUMBERED is unneeded, because it expands to

	.ctl_name = 0

The same effect can be achieved by skipping .ctl_name initialization,
saving one line per sysctl.

Also, remove ->strategy callbacks from CTL_UNNUMBERED sysctls, because
they aren't going to be called. And remove CTL_NONE, which nobody uses
and is synonym for CTL_UNNUMBERED.

Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru>
---

 Documentation/sysctl/ctl_unnumbered.txt    |    5 ++---
 arch/ia64/kernel/crash.c                   |    1 -
 arch/ia64/kernel/perfmon.c                 |    5 -----
 arch/ia64/sn/kernel/xpc_main.c             |    8 --------
 arch/mips/au1000/common/power.c            |    4 ----
 arch/sh64/kernel/traps.c                   |    5 -----
 drivers/char/hpet.c                        |    2 --
 drivers/char/rtc.c                         |    2 --
 fs/coda/sysctl.c                           |    4 ----
 fs/lockd/svc.c                             |    7 -------
 fs/nfs/sysctl.c                            |    7 -------
 fs/ntfs/sysctl.c                           |    1 -
 include/linux/sysctl.h                     |    8 +-------
 kernel/sysctl.c                            |   28 ----------------------------
 net/9p/sysctl.c                            |    2 --
 net/core/sysctl_net_core.c                 |    2 --
 net/ipv6/addrconf.c                        |    1 -
 net/netfilter/nf_conntrack_proto_udplite.c |    2 --
 net/netfilter/nf_conntrack_standalone.c    |    1 -
 19 files changed, 3 insertions(+), 92 deletions(-)

--- a/Documentation/sysctl/ctl_unnumbered.txt
+++ b/Documentation/sysctl/ctl_unnumbered.txt
@@ -3,9 +3,8 @@ Except for a few extremely rare exceptions user space applications do not use
 the binary sysctl interface.  Instead everyone uses /proc/sys/...  with
 readable ascii names.
 
-Recently the kernel has started supporting setting the binary sysctl value to
-CTL_UNNUMBERED so we no longer need to assign a binary sysctl path to allow
-sysctls to show up in /proc/sys.
+Kernel now supports sysctls without binary numbers so we no longer need to
+assign them to allow sysctls to show up in /proc/sys.
 
 Assigning binary sysctl numbers is an endless source of conflicts in sysctl.h,
 breaking of the user space ABI (because of those conflicts), and maintenance
--- a/arch/ia64/kernel/crash.c
+++ b/arch/ia64/kernel/crash.c
@@ -197,7 +197,6 @@ kdump_init_notifier(struct notifier_block *self, unsigned long val, void *data)
 #ifdef CONFIG_SYSCTL
 static ctl_table kdump_on_init_table[] = {
 	{
-		.ctl_name = CTL_UNNUMBERED,
 		.procname = "kdump_on_init",
 		.data = &kdump_on_init,
 		.maxlen = sizeof(int),
--- a/arch/ia64/kernel/perfmon.c
+++ b/arch/ia64/kernel/perfmon.c
@@ -521,7 +521,6 @@ EXPORT_SYMBOL(pfm_sysctl);
 
 static ctl_table pfm_ctl_table[]={
 	{
-		.ctl_name	= CTL_UNNUMBERED,
 		.procname	= "debug",
 		.data		= &pfm_sysctl.debug,
 		.maxlen		= sizeof(int),
@@ -529,7 +528,6 @@ static ctl_table pfm_ctl_table[]={
 		.proc_handler	= &proc_dointvec,
 	},
 	{
-		.ctl_name	= CTL_UNNUMBERED,
 		.procname	= "debug_ovfl",
 		.data		= &pfm_sysctl.debug_ovfl,
 		.maxlen		= sizeof(int),
@@ -537,7 +535,6 @@ static ctl_table pfm_ctl_table[]={
 		.proc_handler	= &proc_dointvec,
 	},
 	{
-		.ctl_name	= CTL_UNNUMBERED,
 		.procname	= "fastctxsw",
 		.data		= &pfm_sysctl.fastctxsw,
 		.maxlen		= sizeof(int),
@@ -545,7 +542,6 @@ static ctl_table pfm_ctl_table[]={
 		.proc_handler	=  &proc_dointvec,
 	},
 	{
-		.ctl_name	= CTL_UNNUMBERED,
 		.procname	= "expert_mode",
 		.data		= &pfm_sysctl.expert_mode,
 		.maxlen		= sizeof(int),
@@ -556,7 +552,6 @@ static ctl_table pfm_ctl_table[]={
 };
 static ctl_table pfm_sysctl_dir[] = {
 	{
-		.ctl_name	= CTL_UNNUMBERED,
 		.procname	= "perfmon",
 		.mode		= 0755,
 		.child		= pfm_ctl_table,
--- a/arch/ia64/sn/kernel/xpc_main.c
+++ b/arch/ia64/sn/kernel/xpc_main.c
@@ -101,24 +101,20 @@ static int xpc_disengage_request_max_timelimit = 120;
 
 static ctl_table xpc_sys_xpc_hb_dir[] = {
 	{
-		.ctl_name 	= CTL_UNNUMBERED,
 		.procname	= "hb_interval",
 		.data		= &xpc_hb_interval,
 		.maxlen		= sizeof(int),
 		.mode		= 0644,
 		.proc_handler	= &proc_dointvec_minmax,
-		.strategy	= &sysctl_intvec,
 		.extra1		= &xpc_hb_min_interval,
 		.extra2		= &xpc_hb_max_interval
 	},
 	{
-		.ctl_name	= CTL_UNNUMBERED,
 		.procname	= "hb_check_interval",
 		.data		= &xpc_hb_check_interval,
 		.maxlen		= sizeof(int),
 		.mode		= 0644,
 		.proc_handler	= &proc_dointvec_minmax,
-		.strategy	= &sysctl_intvec,
 		.extra1		= &xpc_hb_check_min_interval,
 		.extra2		= &xpc_hb_check_max_interval
 	},
@@ -126,19 +122,16 @@ static ctl_table xpc_sys_xpc_hb_dir[] = {
 };
 static ctl_table xpc_sys_xpc_dir[] = {
 	{
-		.ctl_name	= CTL_UNNUMBERED,
 		.procname	= "hb",
 		.mode		= 0555,
 		.child		= xpc_sys_xpc_hb_dir
 	},
 	{
-		.ctl_name	= CTL_UNNUMBERED,
 		.procname	= "disengage_request_timelimit",
 		.data		= &xpc_disengage_request_timelimit,
 		.maxlen		= sizeof(int),
 		.mode		= 0644,
 		.proc_handler	= &proc_dointvec_minmax,
-		.strategy	= &sysctl_intvec,
 		.extra1		= &xpc_disengage_request_min_timelimit,
 		.extra2		= &xpc_disengage_request_max_timelimit
 	},
@@ -146,7 +139,6 @@ static ctl_table xpc_sys_xpc_dir[] = {
 };
 static ctl_table xpc_sys_dir[] = {
 	{
-		.ctl_name	= CTL_UNNUMBERED,
 		.procname	= "xpc",
 		.mode		= 0555,
 		.child		= xpc_sys_xpc_dir
--- a/arch/mips/au1000/common/power.c
+++ b/arch/mips/au1000/common/power.c
@@ -420,7 +420,6 @@ static int pm_do_freq(ctl_table * ctl, int write, struct file *file,
 
 static struct ctl_table pm_table[] = {
 	{
-		.ctl_name 	= CTL_UNNUMBERED,
 		.procname	= "suspend",
 		.data		= NULL,
 		.maxlen		= 0,
@@ -428,7 +427,6 @@ static struct ctl_table pm_table[] = {
 		.proc_handler	= &pm_do_suspend
 	},
 	{
-		.ctl_name	= CTL_UNNUMBERED,
 		.procname	= "sleep",
 		.data		= NULL,
 		.maxlen		= 0,
@@ -436,7 +434,6 @@ static struct ctl_table pm_table[] = {
 		.proc_handler	= &pm_do_sleep
 	},
 	{
-		.ctl_name	= CTL_UNNUMBERED,
 		.procname	= "freq",
 		.data		= NULL,
 		.maxlen		= 0,
@@ -448,7 +445,6 @@ static struct ctl_table pm_table[] = {
 
 static struct ctl_table pm_dir_table[] = {
 	{
-		.ctl_name	= CTL_UNNUMBERED,
 		.procname	= "pm",
 		.mode		= 0555,
 		.child		= pm_table
--- a/arch/sh64/kernel/traps.c
+++ b/arch/sh64/kernel/traps.c
@@ -910,7 +910,6 @@ static int misaligned_fixup(struct pt_regs *regs)
 
 static ctl_table unaligned_table[] = {
 	{
-		.ctl_name	= CTL_UNNUMBERED,
 		.procname	= "kernel_reports",
 		.data		= &kernel_mode_unaligned_fixup_count,
 		.maxlen		= sizeof(int),
@@ -919,7 +918,6 @@ static ctl_table unaligned_table[] = {
 	},
 #if defined(CONFIG_SH64_USER_MISALIGNED_FIXUP)
 	{
-		.ctl_name	= CTL_UNNUMBERED,
 		.procname	= "user_reports",
 		.data		= &user_mode_unaligned_fixup_count,
 		.maxlen		= sizeof(int),
@@ -927,7 +925,6 @@ static ctl_table unaligned_table[] = {
 		.proc_handler	= &proc_dointvec
 	},
 	{
-		.ctl_name	= CTL_UNNUMBERED,
 		.procname	= "user_enable",
 		.data		= &user_mode_unaligned_fixup_enable,
 		.maxlen		= sizeof(int),
@@ -939,7 +936,6 @@ static ctl_table unaligned_table[] = {
 
 static ctl_table unaligned_root[] = {
 	{
-		.ctl_name	= CTL_UNNUMBERED,
 		.procname	= "unaligned_fixup",
 		.mode		= 0555,
 		unaligned_table
@@ -949,7 +945,6 @@ static ctl_table unaligned_root[] = {
 
 static ctl_table sh64_root[] = {
 	{
-		.ctl_name	= CTL_UNNUMBERED,
 		.procname	= "sh64",
 		.mode		= 0555,
 		.child		= unaligned_root
--- a/drivers/char/hpet.c
+++ b/drivers/char/hpet.c
@@ -723,7 +723,6 @@ int hpet_control(struct hpet_task *tp, unsigned int cmd, unsigned long arg)
 
 static ctl_table hpet_table[] = {
 	{
-	 .ctl_name = CTL_UNNUMBERED,
 	 .procname = "max-user-freq",
 	 .data = &hpet_max_freq,
 	 .maxlen = sizeof(int),
@@ -735,7 +734,6 @@ static ctl_table hpet_table[] = {
 
 static ctl_table hpet_root[] = {
 	{
-	 .ctl_name = CTL_UNNUMBERED,
 	 .procname = "hpet",
 	 .maxlen = 0,
 	 .mode = 0555,
--- a/drivers/char/rtc.c
+++ b/drivers/char/rtc.c
@@ -279,7 +279,6 @@ irqreturn_t rtc_interrupt(int irq, void *dev_id)
  */
 static ctl_table rtc_table[] = {
 	{
-		.ctl_name	= CTL_UNNUMBERED,
 		.procname	= "max-user-freq",
 		.data		= &rtc_max_user_freq,
 		.maxlen		= sizeof(int),
@@ -291,7 +290,6 @@ static ctl_table rtc_table[] = {
 
 static ctl_table rtc_root[] = {
 	{
-		.ctl_name	= CTL_UNNUMBERED,
 		.procname	= "rtc",
 		.mode		= 0555,
 		.child		= rtc_table,
--- a/fs/coda/sysctl.c
+++ b/fs/coda/sysctl.c
@@ -15,7 +15,6 @@ static struct ctl_table_header *fs_table_header;
 
 static ctl_table coda_table[] = {
 	{
-		.ctl_name	= CTL_UNNUMBERED,
 		.procname	= "timeout",
 		.data		= &coda_timeout,
 		.maxlen		= sizeof(int),
@@ -23,7 +22,6 @@ static ctl_table coda_table[] = {
 		.proc_handler	= &proc_dointvec
 	},
 	{
-		.ctl_name	= CTL_UNNUMBERED,
 		.procname	= "hard",
 		.data		= &coda_hard,
 		.maxlen		= sizeof(int),
@@ -31,7 +29,6 @@ static ctl_table coda_table[] = {
 		.proc_handler	= &proc_dointvec
 	},
 	{
-		.ctl_name	= CTL_UNNUMBERED,
 		.procname	= "fake_statfs",
 		.data		= &coda_fake_statfs,
 		.maxlen		= sizeof(int),
@@ -43,7 +40,6 @@ static ctl_table coda_table[] = {
 
 static ctl_table fs_table[] = {
 	{
-		.ctl_name	= CTL_UNNUMBERED,
 		.procname	= "coda",
 		.mode		= 0555,
 		.child		= coda_table
--- a/fs/lockd/svc.c
+++ b/fs/lockd/svc.c
@@ -370,7 +370,6 @@ EXPORT_SYMBOL(lockd_down);
 
 static ctl_table nlm_sysctls[] = {
 	{
-		.c