The patch titled Subject: kernel/cred.c: make init_groups static has been added to the -mm tree. Its filename is kernel-credc-make-init_groups-static.patch This patch should soon appear at https://ozlabs.org/~akpm/mmots/broken-out/kernel-credc-make-init_groups-static.patch and later at https://ozlabs.org/~akpm/mmotm/broken-out/kernel-credc-make-init_groups-static.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next and is updated there every 3-4 working days ------------------------------------------------------ From: Rasmus Villemoes <linux@xxxxxxxxxxxxxxxxxx> Subject: kernel/cred.c: make init_groups static init_groups is declared in both cred.h and init_task.h, but it is not actually referenced anywhere outside of cred.c where it is defined. So make it static and remove the declarations. Link: https://lkml.kernel.org/r/20210310220102.2484201-1-linux@xxxxxxxxxxxxxxxxxx Signed-off-by: Rasmus Villemoes <linux@xxxxxxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- include/linux/cred.h | 1 - include/linux/init_task.h | 1 - kernel/cred.c | 2 +- 3 files changed, 1 insertion(+), 3 deletions(-) --- a/include/linux/cred.h~kernel-credc-make-init_groups-static +++ a/include/linux/cred.h @@ -53,7 +53,6 @@ do { \ groups_free(group_info); \ } while (0) -extern struct group_info init_groups; #ifdef CONFIG_MULTIUSER extern struct group_info *groups_alloc(int); extern void groups_free(struct group_info *); --- a/include/linux/init_task.h~kernel-credc-make-init_groups-static +++ a/include/linux/init_task.h @@ -25,7 +25,6 @@ extern struct files_struct init_files; extern struct fs_struct init_fs; extern struct nsproxy init_nsproxy; -extern struct group_info init_groups; extern struct cred init_cred; #ifndef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE --- a/kernel/cred.c~kernel-credc-make-init_groups-static +++ a/kernel/cred.c @@ -33,7 +33,7 @@ do { \ static struct kmem_cache *cred_jar; /* init to 2 - one for init_task, one to ensure it is never freed */ -struct group_info init_groups = { .usage = ATOMIC_INIT(2) }; +static struct group_info init_groups = { .usage = ATOMIC_INIT(2) }; /* * The initial credentials for the initial task _ Patches currently in -mm which might be from linux@xxxxxxxxxxxxxxxxxx are kernel-asyncc-fix-pr_debug-statement.patch kernel-credc-make-init_groups-static.patch