Subject: linux-next: build warnings after merge of the vfs-brauner tree

From: Stephen Rothwell <[email-masked]>
Date: Wed, 11 Dec 2024 14:37:01 +1100

Hi all,

After merging the vfs-brauner tree, today's linux-next build (powerpc
allyesconfig) produced these warnings:

samples/vfs/mountinfo.c: In function 'show_propagation':
samples/vfs/mountinfo.c:104:36: warning: format '%llu' expects argument of type 'long long unsigned int', but argument 2 has type '__u64' {aka 'long unsigned int'} [-Wformat=]
  104 |                 printf(" shared:%llu", sm->mnt_peer_group);
      |                                 ~~~^   ~~~~~~~~~~~~~~~~~~
      |                                    |     |
      |                                    |     __u64 {aka long unsigned int}
      |                                    long long unsigned int
      |                                 %lu
samples/vfs/mountinfo.c:106:36: warning: format '%llu' expects argument of type 'long long unsigned int', but argument 2 has type '__u64' {aka 'long unsigned int'} [-Wformat=]
  106 |                 printf(" master:%llu", sm->mnt_master);
      |                                 ~~~^   ~~~~~~~~~~~~~~
      |                                    |     |
      |                                    |     __u64 {aka long unsigned int}
      |                                    long long unsigned int
      |                                 %lu
samples/vfs/mountinfo.c:108:52: warning: format '%llu' expects argument of type 'long long unsigned int', but argument 2 has type '__u64' {aka 'long unsigned int'} [-Wformat=]
  108 |                         printf(" propagate_from:%llu", sm->propagate_from);
      |                                                 ~~~^   ~~~~~~~~~~~~~~~~~~
      |                                                    |     |
      |                                                    |     __u64 {aka long unsigned int}
      |                                                    long long unsigned int
      |                                                 %lu
samples/vfs/mountinfo.c: In function 'dump_mountinfo':
samples/vfs/mountinfo.c:144:42: warning: format '%llx' expects argument of type 'long long unsigned int', but argument 4 has type '__u64' {aka 'long unsigned int'} [-Wformat=]
  144 |                 printf("0x%lx 0x%lx 0x%llx ", mnt_ns_id, mnt_id, buf->mnt_parent_id);
      |                                       ~~~^                       ~~~~~~~~~~~~~~~~~~
      |                                          |                          |
      |                                          long long unsigned int     __u64 {aka long unsigned int}
      |                                       %lx

Introduced by commits

  0c8f746452aa ("samples: add a mountinfo program to demonstrate statmount()/listmount()")
  ee8c840a4a35 ("samples: fix missing nodiratime option and handle propagate_from correctly")

I am not sure why these warnings only turned up today.

-- 
Cheers,
Stephen Rothwell