[android-common:mirror-chromeos-5.10-arcvm 1/1] mm/vmscan.c:4621:5: warning: no previous prototype for 'print_node_mglru'

[kernel test robot <lkp@intel.com>]

Hi Bryan,

FYI, the error/warning still remains.

tree:   https://android.googlesource.com/kernel/common mirror-chromeos-5.10-arcvm
head:   80e99694479e5e9fe7c6230aad1327bbb9c655be
commit: 2038834ed810ff10b875445a030663d659c69500 [1/1] CHROMIUM: Reland of add implementation of MGLRU in sysfs
config: arm64-randconfig-001-20260511 (https://download.01.org/0day-ci/archive/20260511/202605112031.Skstf2w2-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 14.3.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260511/202605112031.Skstf2w2-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202605112031.Skstf2w2-lkp@intel.com/

All warnings (new ones prefixed by >>):

   mm/vmscan.c:678:15: warning: no previous prototype for 'shrink_slab' [-Wmissing-prototypes]
     678 | unsigned long shrink_slab(gfp_t gfp_mask, int nid,
         |               ^~~~~~~~~~~
>> mm/vmscan.c:4621:5: warning: no previous prototype for 'print_node_mglru' [-Wmissing-prototypes]
    4621 | int print_node_mglru(struct lruvec *lruvec, char *buf, int orig_pos)
         |     ^~~~~~~~~~~~~~~~
   mm/vmscan.c: In function 'show_lru_gen_admin':
   mm/vmscan.c:4691:62: warning: format '%s' expects argument of type 'char *', but argument 5 has type 'void *' [-Wformat=]
    4691 |                                                 "memcg %5hu %s\n", mem_cgroup_id(memcg), path);
         |                                                             ~^                           ~~~~
         |                                                              |                           |
         |                                                              char *                      void *
         |                                                             %p
   mm/vmscan.c:4702:21: warning: assignment to 'char *' from 'long unsigned int' makes pointer from integer without a cast [-Wint-conversion]
    4702 |                 buf = PAGE_SIZE - 1;
         |                     ^


vim +/print_node_mglru +4621 mm/vmscan.c

  4620	
> 4621	int print_node_mglru(struct lruvec *lruvec, char *buf, int orig_pos)
  4622	{
  4623		unsigned long seq;
  4624		struct lrugen *lrugen = &lruvec->evictable;
  4625	
  4626		DEFINE_MAX_SEQ(lruvec);
  4627		DEFINE_MIN_SEQ(lruvec);
  4628	
  4629		int print_pos = orig_pos;
  4630	
  4631		seq = min(min_seq[0], min_seq[1]);
  4632	
  4633		for (; seq <= max_seq; seq++) {
  4634			int gen, type, zone;
  4635			unsigned int msecs;
  4636	
  4637			gen = lru_gen_from_seq(seq);
  4638			msecs = jiffies_to_msecs(jiffies - READ_ONCE(lrugen->timestamps[gen]));
  4639	
  4640			print_pos += snprintf(buf + print_pos, PAGE_SIZE - print_pos,
  4641				" %10lu %10u", seq, msecs);
  4642	
  4643			for (type = 0; type < ANON_AND_FILE; type++) {
  4644				long size = 0;
  4645	
  4646				if (seq < min_seq[type]) {
  4647					print_pos += snprintf(buf + print_pos,
  4648						PAGE_SIZE - print_pos, "         -0 ");
  4649					continue;
  4650				}
  4651	
  4652				for (zone = 0; zone < MAX_NR_ZONES; zone++)
  4653					size += READ_ONCE(lrugen->sizes[gen][type][zone]);
  4654	
  4655				print_pos += snprintf(buf + print_pos,
  4656					PAGE_SIZE - print_pos, " %10lu ", max(size, 0L));
  4657			}
  4658	
  4659			print_pos += snprintf(buf + print_pos, PAGE_SIZE - print_pos, "\n");
  4660	
  4661		}
  4662	
  4663		return print_pos - orig_pos;
  4664	}
  4665	

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