linux-kernel - Re: [PATCH] sysctl: Remove unused ctl

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Message-ID: <gkuyseuq2v4y2dl5niufwx2egwrk5a6nhrn7k5vspaorfz5jny@q5mz763kegl5>
Date: Tue, 16 Dec 2025 09:15:35 +0100
From: Jan Kara <jack@...e.cz>
To: Joel Granados <joel.granados@...nel.org>
Cc: Alexander Viro <viro@...iv.linux.org.uk>, 
	Christian Brauner <brauner@...nel.org>, Jan Kara <jack@...e.cz>, Muchun Song <muchun.song@...ux.dev>, 
	Oscar Salvador <osalvador@...e.de>, David Hildenbrand <david@...nel.org>, 
	Petr Mladek <pmladek@...e.com>, Steven Rostedt <rostedt@...dmis.org>, 
	John Ogness <john.ogness@...utronix.de>, Sergey Senozhatsky <senozhatsky@...omium.org>, 
	"David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, 
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, Simon Horman <horms@...nel.org>, 
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org, linux-mm@...ck.org, 
	linux-hams@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [PATCH] sysctl: Remove unused ctl_table forward declarations

On Mon 15-12-25 16:25:19, Joel Granados wrote:
> Remove superfluous forward declarations of ctl_table from header files
> where they are no longer needed. These declarations were left behind
> after sysctl code refactoring and cleanup.
> 
> Signed-off-by: Joel Granados <joel.granados@...nel.org>

Looks good. Feel free to add:

Reviewed-by: Jan Kara <jack@...e.cz>

								Honza

> ---
> Apologies for such a big To: list. My idea is for this to go into
> mainline through sysctl; get back to me if you prefer otherwise. On the
> off chance that this has a V2, let me know if you want to be removed
> from the To and I'll make that happen
> ---
>  include/linux/fs.h      | 1 -
>  include/linux/hugetlb.h | 2 --
>  include/linux/printk.h  | 1 -
>  include/net/ax25.h      | 2 --
>  4 files changed, 6 deletions(-)
> 
> diff --git a/include/linux/fs.h b/include/linux/fs.h
> index 04ceeca12a0d5caadb68643bf68b7a78e17c08d4..77f6302fdced1ef7e61ec1b35bed77c77b294124 100644
> --- a/include/linux/fs.h
> +++ b/include/linux/fs.h
> @@ -3487,7 +3487,6 @@ ssize_t simple_attr_write(struct file *file, const char __user *buf,
>  ssize_t simple_attr_write_signed(struct file *file, const char __user *buf,
>  				 size_t len, loff_t *ppos);
>  
> -struct ctl_table;
>  int __init list_bdev_fs_names(char *buf, size_t size);
>  
>  #define __FMODE_EXEC		((__force int) FMODE_EXEC)
> diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h
> index 019a1c5281e4e6e04a9207dff7f7aa58c9669a80..18d1c4ecc4f948b179679b8fcc7870f3d466a4d9 100644
> --- a/include/linux/hugetlb.h
> +++ b/include/linux/hugetlb.h
> @@ -16,8 +16,6 @@
>  #include <linux/userfaultfd_k.h>
>  #include <linux/nodemask.h>
>  
> -struct ctl_table;
> -struct user_struct;
>  struct mmu_gather;
>  struct node;
>  
> diff --git a/include/linux/printk.h b/include/linux/printk.h
> index 45c663124c9bd3b294031d839f1253f410313faa..63d516c873b4c412eead6ee4eb9f90a5c28f630c 100644
> --- a/include/linux/printk.h
> +++ b/include/linux/printk.h
> @@ -78,7 +78,6 @@ extern void console_verbose(void);
>  /* strlen("ratelimit") + 1 */
>  #define DEVKMSG_STR_MAX_SIZE 10
>  extern char devkmsg_log_str[DEVKMSG_STR_MAX_SIZE];
> -struct ctl_table;
>  
>  extern int suppress_printk;
>  
> diff --git a/include/net/ax25.h b/include/net/ax25.h
> index a7bba42dde153a2aeaf010a7ef8b48d39d15a835..beec9712e9c71d4be90acb6fc7113022527bc1ab 100644
> --- a/include/net/ax25.h
> +++ b/include/net/ax25.h
> @@ -215,8 +215,6 @@ typedef struct {
>  	unsigned short		slave_timeout;		/* when? */
>  } ax25_dama_info;
>  
> -struct ctl_table;
> -
>  typedef struct ax25_dev {
>  	struct list_head	list;
>  
> 
> ---
> base-commit: 8f0b4cce4481fb22653697cced8d0d04027cb1e8
> change-id: 20251215-jag-sysctl_fw_decl-58c718715c8c
> 
> Best regards,
> -- 
> Joel Granados <joel.granados@...nel.org>
> 
> 
-- 
Jan Kara <jack@...e.com>
SUSE Labs, CR