+ ocfs2-constify-struct-ocfs2_stack_operations.patch added to mm-nonmm-unstable branch

+ ocfs2-constify-struct-ocfs2_stack_operations.patch added to mm-nonmm-unstable branch

[Andrew Morton]

The patch titled
     Subject: ocfs2: constify struct ocfs2_stack_operations
has been added to the -mm mm-nonmm-unstable branch.  Its filename is
     ocfs2-constify-struct-ocfs2_stack_operations.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/ocfs2-constify-struct-ocfs2_stack_operations.patch

This patch will later appear in the mm-nonmm-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Subject: ocfs2: constify struct ocfs2_stack_operations
Date: Fri, 14 Jun 2024 22:57:09 +0200

"struct ocfs2_stack_operations" are not modified in this driver.

Constifying this structure moves some data to a read-only section, so
increase overall security.

In order to do it, "struct ocfs2_stack_plugin" also needs to be adjusted
to this new const qualifier.

On a x86_64, with allmodconfig:
Before:
======
   text	   data	    bss	    dec	    hex	filename
   6241	    644	      0	   6885	   1ae5	fs/ocfs2/stack_o2cb.o

After:
=====
   text	   data	    bss	    dec	    hex	filename
   6337	    548	      0	   6885	   1ae5	fs/ocfs2/stack_o2cb.o

Link: https://lkml.kernel.org/r/f52dab89ee0049ec6271de29183a781efbb275ab.1718398605.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Joseph Qi <jiangqi903@gmail.com>
Cc: Changwei Ge <gechangwei@live.cn>
Cc: Gang He <ghe@suse.com>
Cc: Jun Piao <piaojun@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 fs/ocfs2/stack_o2cb.c |    2 +-
 fs/ocfs2/stack_user.c |    2 +-
 fs/ocfs2/stackglue.h  |    2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

--- a/fs/ocfs2/stackglue.h~ocfs2-constify-struct-ocfs2_stack_operations
+++ a/fs/ocfs2/stackglue.h
@@ -223,7 +223,7 @@ struct ocfs2_stack_operations {
  */
 struct ocfs2_stack_plugin {
 	char *sp_name;
-	struct ocfs2_stack_operations *sp_ops;
+	const struct ocfs2_stack_operations *sp_ops;
 	struct module *sp_owner;
 
 	/* These are managed by the stackglue code. */
--- a/fs/ocfs2/stack_o2cb.c~ocfs2-constify-struct-ocfs2_stack_operations
+++ a/fs/ocfs2/stack_o2cb.c
@@ -404,7 +404,7 @@ static int o2cb_cluster_this_node(struct
 	return 0;
 }
 
-static struct ocfs2_stack_operations o2cb_stack_ops = {
+static const struct ocfs2_stack_operations o2cb_stack_ops = {
 	.connect	= o2cb_cluster_connect,
 	.disconnect	= o2cb_cluster_disconnect,
 	.this_node	= o2cb_cluster_this_node,
--- a/fs/ocfs2/stack_user.c~ocfs2-constify-struct-ocfs2_stack_operations
+++ a/fs/ocfs2/stack_user.c
@@ -1065,7 +1065,7 @@ static int user_cluster_this_node(struct
 	return 0;
 }
 
-static struct ocfs2_stack_operations ocfs2_user_plugin_ops = {
+static const struct ocfs2_stack_operations ocfs2_user_plugin_ops = {
 	.connect	= user_cluster_connect,
 	.disconnect	= user_cluster_disconnect,
 	.this_node	= user_cluster_this_node,
_

Patches currently in -mm which might be from christophe.jaillet@wanadoo.fr are

fsi-occ-remove-usage-of-the-deprecated-ida_simple_xx-api.patch
most-remove-usage-of-the-deprecated-ida_simple_xx-api.patch
proc-remove-usage-of-the-deprecated-ida_simple_xx-api.patch
ocfs2-constify-struct-ocfs2_lock_res_ops.patch
ocfs2-constify-struct-ocfs2_stack_operations.patch