Re: [PATCH 11/27] fs: port acl to const mnt_idmap

[Paul Moore <paul@paul-moore.com>]

On Sep  1, 2026 Christian Brauner <brauner@kernel.org> wrote:
> 
> Convert to const struct mnt_idmap.
> 
> A mount's idmapping is immutable. The only thing that is allowed to be
> modified afterwards is the reference count and that is hidden behind
> mnt_idmap_get() and mnt_idmap_put(). Everything else only ever reads
> from the idmapping. This is the same model that struct cred uses and the
> idmapping is also rather sensitive.
> 
> So make the idmap argument const wherever we can. The conversion is done
> from the bottom up so callers can continue to pass a non-const pointer
> to a const parameter until the conversion is finished.
> 
> No functional changes.
> 
> Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
> Reviewed-by: Jan Kara <jack@suse.cz>
> ---
>  fs/ntfs/ea.c                          |  4 ++--
>  fs/ntfs/ea.h                          |  2 +-
>  fs/ntfs/namei.c                       |  2 +-
>  fs/ntfs3/inode.c                      |  2 +-
>  fs/ntfs3/ntfs_fs.h                    |  4 ++--
>  fs/ntfs3/xattr.c                      |  4 ++--
>  fs/posix_acl.c                        |  6 +++---
>  include/linux/lsm_hook_defs.h         |  8 ++++----
>  include/linux/posix_acl.h             |  4 ++--
>  include/linux/security.h              | 16 ++++++++--------
>  security/integrity/evm/evm_main.c     | 10 +++++-----
>  security/integrity/ima/ima_appraise.c |  4 ++--
>  security/security.c                   |  8 ++++----
>  security/selinux/hooks.c              |  6 +++---
>  security/smack/smack_lsm.c            |  6 +++---
>  15 files changed, 43 insertions(+), 43 deletions(-)

Acked-by: Paul Moore <paul@paul-moore.com> (LSM, SELinux)

--
paul-moore.com