linux/drivers/scsi/scsi_sysctl.c
Eric W. Biederman 0b4d414714 [PATCH] sysctl: remove insert_at_head from register_sysctl
The semantic effect of insert_at_head is that it would allow new registered
sysctl entries to override existing sysctl entries of the same name.  Which is
pain for caching and the proc interface never implemented.

I have done an audit and discovered that none of the current users of
register_sysctl care as (excpet for directories) they do not register
duplicate sysctl entries.

So this patch simply removes the support for overriding existing entries in
the sys_sysctl interface since no one uses it or cares and it makes future
enhancments harder.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: David Howells <dhowells@redhat.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Andi Kleen <ak@muc.de>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Corey Minyard <minyard@acm.org>
Cc: Neil Brown <neilb@suse.de>
Cc: "John W. Linville" <linville@tuxdriver.com>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Cc: Jan Kara <jack@ucw.cz>
Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
Cc: Mark Fasheh <mark.fasheh@oracle.com>
Cc: David Chinner <dgc@sgi.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Patrick McHardy <kaber@trash.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-14 08:09:59 -08:00

53 lines
1,012 B
C

/*
* Copyright (C) 2003 Christoph Hellwig.
* Released under GPL v2.
*/
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/sysctl.h>
#include "scsi_logging.h"
static ctl_table scsi_table[] = {
{ .ctl_name = DEV_SCSI_LOGGING_LEVEL,
.procname = "logging_level",
.data = &scsi_logging_level,
.maxlen = sizeof(scsi_logging_level),
.mode = 0644,
.proc_handler = &proc_dointvec },
{ }
};
static ctl_table scsi_dir_table[] = {
{ .ctl_name = DEV_SCSI,
.procname = "scsi",
.mode = 0555,
.child = scsi_table },
{ }
};
static ctl_table scsi_root_table[] = {
{ .ctl_name = CTL_DEV,
.procname = "dev",
.mode = 0555,
.child = scsi_dir_table },
{ }
};
static struct ctl_table_header *scsi_table_header;
int __init scsi_init_sysctl(void)
{
scsi_table_header = register_sysctl_table(scsi_root_table);
if (!scsi_table_header)
return -ENOMEM;
return 0;
}
void scsi_exit_sysctl(void)
{
unregister_sysctl_table(scsi_table_header);
}