Ups, sorry about that. Andrew could you fold the following into
mm-vmstat-skip-reporting-offline-pages-in-pagetypeinfo.patch
---
>From 4cfc1527d88a93c56292e4457f5bf968d46d0134 Mon Sep 17 00:00:00 2001
From: Michal Hocko <mhocko@xxxxxxxx>
Date: Fri, 19 May 2017 09:20:05 +0200
Subject: [PATCH] fold me "mm, vmstat: skip reporting offline pages in
pagetypeinfo"
0-day has reported
In file included from arch/x86/include/asm/page.h:75:0,
from arch/x86/include/asm/thread_info.h:11,
from include/linux/thread_info.h:37,
from arch/x86/include/asm/preempt.h:6,
from include/linux/preempt.h:80,
from include/linux/spinlock.h:50,
from include/linux/wait.h:8,
from include/linux/fs.h:5,
from mm/vmstat.c:12:
mm/vmstat.c: In function 'pagetypeinfo_showblockcount_print':
>> include/asm-generic/memory_model.h:54:52: warning: 'page' is used uninitialized in this function [-Wuninitialized]
#define __page_to_pfn(page) (unsigned long)((page) - vmemmap)
^
mm/vmstat.c:1224:16: note: 'page' was declared here
struct page *page;
^~~~
Signed-off-by: Michal Hocko <mhocko@xxxxxxxx>
---
mm/vmstat.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/mm/vmstat.c b/mm/vmstat.c
index c432e581f9a9..6dae6b240b21 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -1223,7 +1223,8 @@ static void pagetypeinfo_showblockcount_print(struct seq_file *m,
for (pfn = start_pfn; pfn < end_pfn; pfn += pageblock_nr_pages) {
struct page *page;
- if (!pfn_to_online_page(pfn))
+ page = pfn_to_online_page(pfn);
+ if (!page)
continue;
/* Watch for unexpected holes punched in the memmap */
--
2.11.0
--
Michal Hocko
SUSE Labs
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