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Date: Mon, 28 Mar 2016 14:07:52 +0800
From: kbuild test robot <lkp@...el.com>
To: js1304@...il.com
Cc: kbuild-all@...org, Andrew Morton <akpm@...ux-foundation.org>,
Hugh Dickins <hughd@...gle.com>,
Johannes Berg <johannes@...solutions.net>,
"David S. Miller" <davem@...emloft.net>,
Sunil Goutham <sgoutham@...ium.com>, linux-mm@...ck.org,
linux-kernel@...r.kernel.org, Joonsoo Kim <iamjoonsoo.kim@....com>
Subject: Re: [PATCH 2/2] mm: rename _count, field of the struct page, to
_refcount
Hi Joonsoo,
[auto build test ERROR on net/master]
[also build test ERROR on v4.6-rc1 next-20160327]
[if your patch is applied to the wrong git tree, please drop us a note to help improving the system]
url: https://github.com/0day-ci/linux/commits/js1304-gmail-com/mm-page_ref-use-page_ref-helper-instead-of-direct-modification-of-_count/20160328-140113
config: i386-tinyconfig (attached as .config)
reproduce:
# save the attached .config to linux build tree
make ARCH=i386
All errors (new ones prefixed by >>):
In file included from include/linux/mm.h:25:0,
from include/linux/suspend.h:8,
from arch/x86/kernel/asm-offsets.c:12:
include/linux/page_ref.h: In function 'page_ref_count':
>> include/linux/page_ref.h:66:26: error: 'struct page' has no member named '_count'
return atomic_read(&page->_count);
^
include/linux/page_ref.h: In function 'page_count':
include/linux/page_ref.h:71:41: error: 'struct page' has no member named '_count'
return atomic_read(&compound_head(page)->_count);
^
include/linux/page_ref.h: In function 'set_page_count':
include/linux/page_ref.h:76:18: error: 'struct page' has no member named '_count'
atomic_set(&page->_count, v);
^
include/linux/page_ref.h: In function 'page_ref_add':
include/linux/page_ref.h:92:22: error: 'struct page' has no member named '_count'
atomic_add(nr, &page->_count);
^
include/linux/page_ref.h: In function 'page_ref_sub':
include/linux/page_ref.h:99:22: error: 'struct page' has no member named '_count'
atomic_sub(nr, &page->_count);
^
include/linux/page_ref.h: In function 'page_ref_inc':
include/linux/page_ref.h:106:18: error: 'struct page' has no member named '_count'
atomic_inc(&page->_count);
^
include/linux/page_ref.h: In function 'page_ref_dec':
include/linux/page_ref.h:113:18: error: 'struct page' has no member named '_count'
atomic_dec(&page->_count);
^
include/linux/page_ref.h: In function 'page_ref_sub_and_test':
include/linux/page_ref.h:120:41: error: 'struct page' has no member named '_count'
int ret = atomic_sub_and_test(nr, &page->_count);
^
include/linux/page_ref.h: In function 'page_ref_dec_and_test':
include/linux/page_ref.h:129:37: error: 'struct page' has no member named '_count'
int ret = atomic_dec_and_test(&page->_count);
^
In file included from include/linux/atomic.h:4:0,
from include/linux/crypto.h:20,
from arch/x86/kernel/asm-offsets.c:8:
include/linux/page_ref.h: In function 'page_ref_dec_return':
include/linux/page_ref.h:138:35: error: 'struct page' has no member named '_count'
int ret = atomic_dec_return(&page->_count);
^
arch/x86/include/asm/atomic.h:172:53: note: in definition of macro 'atomic_dec_return'
#define atomic_dec_return(v) (atomic_sub_return(1, v))
^
In file included from include/linux/mm.h:25:0,
from include/linux/suspend.h:8,
from arch/x86/kernel/asm-offsets.c:12:
include/linux/page_ref.h: In function 'page_ref_add_unless':
include/linux/page_ref.h:147:35: error: 'struct page' has no member named '_count'
int ret = atomic_add_unless(&page->_count, nr, u);
^
In file included from arch/x86/include/asm/atomic.h:4:0,
from include/linux/atomic.h:4,
from include/linux/crypto.h:20,
from arch/x86/kernel/asm-offsets.c:8:
include/linux/page_ref.h: In function 'page_ref_freeze':
include/linux/page_ref.h:156:39: error: 'struct page' has no member named '_count'
int ret = likely(atomic_cmpxchg(&page->_count, count, 0) == count);
^
include/linux/compiler.h:169:40: note: in definition of macro 'likely'
# define likely(x) __builtin_expect(!!(x), 1)
^
In file included from include/linux/mm.h:25:0,
from include/linux/suspend.h:8,
from arch/x86/kernel/asm-offsets.c:12:
include/linux/page_ref.h: In function 'page_ref_unfreeze':
include/linux/page_ref.h:168:18: error: 'struct page' has no member named '_count'
atomic_set(&page->_count, count);
^
make[2]: *** [arch/x86/kernel/asm-offsets.s] Error 1
make[2]: Target '__build' not remade because of errors.
make[1]: *** [prepare0] Error 2
make[1]: Target 'prepare' not remade because of errors.
make: *** [sub-make] Error 2
vim +66 include/linux/page_ref.h
95813b8f Joonsoo Kim 2016-03-17 60 }
95813b8f Joonsoo Kim 2016-03-17 61
95813b8f Joonsoo Kim 2016-03-17 62 #endif
fe896d18 Joonsoo Kim 2016-03-17 63
fe896d18 Joonsoo Kim 2016-03-17 64 static inline int page_ref_count(struct page *page)
fe896d18 Joonsoo Kim 2016-03-17 65 {
fe896d18 Joonsoo Kim 2016-03-17 @66 return atomic_read(&page->_count);
fe896d18 Joonsoo Kim 2016-03-17 67 }
fe896d18 Joonsoo Kim 2016-03-17 68
fe896d18 Joonsoo Kim 2016-03-17 69 static inline int page_count(struct page *page)
:::::: The code at line 66 was first introduced by commit
:::::: fe896d1878949ea92ba547587bc3075cc688fb8f mm: introduce page reference manipulation functions
:::::: TO: Joonsoo Kim <iamjoonsoo.kim@....com>
:::::: CC: Linus Torvalds <torvalds@...ux-foundation.org>
---
0-DAY kernel test infrastructure Open Source Technology Center
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