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crash_dump: constify struct configfs_item_operations and configfs_group_operations

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'struct configfs_item_operations' and 'configfs_group_operations' are not
modified in this driver.

Constifying these structures moves some data to a read-only section, so
increases overall security, especially when the structure holds some
function pointers.

On a x86_64, with allmodconfig, as an example:
Before:
======
   text	   data	    bss	    dec	    hex	filename
  16339	  11001	    384	  27724	   6c4c	kernel/crash_dump_dm_crypt.o

After:
=====
   text	   data	    bss	    dec	    hex	filename
  16499	  10841	    384	  27724	   6c4c	kernel/crash_dump_dm_crypt.o

Link: https://lkml.kernel.org/r/d046ee5666d2f6b1a48ca1a222dfbd2f7c44462f.1765735035.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Coiby Xu <coxu@redhat.com>
Tested-by: Coiby Xu <coxu@redhat.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: Dave Young <dyoung@redhat.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Christophe JAILLET
2025-12-14 18:57:30 +01:00
committed by Andrew Morton
parent 0319227099
commit b11052be3e
1 changed files with 2 additions and 2 deletions
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4
kernel/crash_dump_dm_crypt.c
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@@ -223,7 +223,7 @@ static void config_key_release(struct config_item *item)
key_count--;
}
static struct configfs_item_operations config_key_item_ops = {
static const struct configfs_item_operations config_key_item_ops = {
.release = config_key_release,
};
@@ -298,7 +298,7 @@ static struct configfs_attribute *config_keys_attrs[] = {
* Note that, since no extra work is required on ->drop_item(),
* no ->drop_item() is provided.
*/
static struct configfs_group_operations config_keys_group_ops = {
static const struct configfs_group_operations config_keys_group_ops = {
.make_item = config_keys_make_item,
};