mm: Show correct reliable pagecache size

hulk inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I4SK3S


CVE: NA

--------------------------------

Show corrent reliable pagecache size if /proc/meminfo if
memory reliable and pagecache use reliable memory is enabled.

Fixes: 9f07eb30 ("mm: Add space after ReliableFileCache")
Signed-off-by: Ma Wupeng <mawupeng1@huawei.com>
Reviewed-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: Yongqiang Liu <liuyongqiang13@huawei.com>

mm/mem_reliable.c

@@ -231,7 +231,7 @@ void reliable_report_meminfo(struct seq_file *m)
 		num += global_node_page_state(NR_LRU_BASE + LRU_INACTIVE_FILE);
 		show_val_kb(m, "FileCache:        ", num);
 		seq_printf(m, "ReliableFileCache: %8llu kB\n",
-			   nr_pagecache_pages);
+			   nr_pagecache_pages << (PAGE_SHIFT - 10));
 	}
 }