Subject: linux-next: build failure after merge of the akpm-current tree

From: Stephen Rothwell <[email-masked]>
Date: Thu, 16 Oct 2014 15:56:57 +1100

Hi Andrew,

After merging the akpm tree, today's linux-next build (powerpc
allyesconfig) failed like this:

In file included from mm/memcontrol.c:28:0:
include/linux/page_counter.h: In function 'page_counter_init':
include/linux/page_counter.h:19:27: error: 'LONG_MAX' undeclared (first use in this function)
 #define PAGE_COUNTER_MAX (LONG_MAX / PAGE_SIZE)
                           ^
include/linux/page_counter.h:26:19: note: in expansion of macro 'PAGE_COUNTER_MAX'
  counter->limit = PAGE_COUNTER_MAX;
                   ^
include/linux/page_counter.h:19:27: note: each undeclared identifier is reported only once for each function it appears in
 #define PAGE_COUNTER_MAX (LONG_MAX / PAGE_SIZE)
                           ^
include/linux/page_counter.h:26:19: note: in expansion of macro 'PAGE_COUNTER_MAX'
  counter->limit = PAGE_COUNTER_MAX;
                   ^
include/linux/page_counter.h:19:38: error: 'PAGE_SIZE' undeclared (first use in this function)
 #define PAGE_COUNTER_MAX (LONG_MAX / PAGE_SIZE)
                                      ^
include/linux/page_counter.h:26:19: note: in expansion of macro 'PAGE_COUNTER_MAX'
  counter->limit = PAGE_COUNTER_MAX;
                   ^
In file included from mm/page_counter.c:7:0:
include/linux/page_counter.h: In function 'page_counter_init':
include/linux/page_counter.h:19:27: error: 'LONG_MAX' undeclared (first use in this function)
 #define PAGE_COUNTER_MAX (LONG_MAX / PAGE_SIZE)
                           ^
include/linux/page_counter.h:26:19: note: in expansion of macro 'PAGE_COUNTER_MAX'
  counter->limit = PAGE_COUNTER_MAX;
                   ^
include/linux/page_counter.h:19:27: note: each undeclared identifier is reported only once for each function it appears in
 #define PAGE_COUNTER_MAX (LONG_MAX / PAGE_SIZE)
                           ^
include/linux/page_counter.h:26:19: note: in expansion of macro 'PAGE_COUNTER_MAX'
  counter->limit = PAGE_COUNTER_MAX;
                   ^
include/linux/page_counter.h:19:38: error: 'PAGE_SIZE' undeclared (first use in this function)
 #define PAGE_COUNTER_MAX (LONG_MAX / PAGE_SIZE)
                                      ^
include/linux/page_counter.h:26:19: note: in expansion of macro 'PAGE_COUNTER_MAX'
  counter->limit = PAGE_COUNTER_MAX;
                   ^

Caused by commit 36a1bfb2a772 ("mm: memcontrol: lockless page
counters").  See Rule 1 in Documentation/SubmitChecklist.

I have added the following patch for today:

From: Stephen Rothwell <[email-masked]>
Date: Thu, 16 Oct 2014 15:49:08 +1100
Subject: [PATCH] mm: memcontrol: add includes for page_counter.h

Signed-off-by: Stephen Rothwell <[email-masked]>
---
 include/linux/page_counter.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/include/linux/page_counter.h b/include/linux/page_counter.h
index a878ef61d073..785640e4efec 100644
--- a/include/linux/page_counter.h
+++ b/include/linux/page_counter.h
@@ -2,6 +2,9 @@
 #define _LINUX_PAGE_COUNTER_H
 
 #include <linux/atomic.h>
+#include <linux/kernel.h>
+
+#include <asm/page.h>
 
 struct page_counter {
 	atomic_long_t count;
-- 
2.1.1

-- 
Cheers,
Stephen Rothwell                    [email-masked]