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Date: Sat, 29 Oct 2016 19:06:24 +0800
From: kbuild test robot <lkp@...el.com>
To: Ming Lei <tom.leiming@...il.com>
Cc: kbuild-all@...org, Jens Axboe <axboe@...com>,
linux-kernel@...r.kernel.org, linux-block@...r.kernel.org,
linux-fsdevel@...r.kernel.org,
Christoph Hellwig <hch@...radead.org>,
"Kirill A . Shutemov" <kirill.shutemov@...ux.intel.com>,
Ming Lei <tom.leiming@...il.com>,
Johannes Berg <johannes.berg@...el.com>
Subject: Re: [PATCH 32/60] block: implement sp version of bvec iterator
helpers
Hi Ming,
[auto build test ERROR on linus/master]
[also build test ERROR on v4.9-rc2 next-20161028]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
[Suggest to use git(>=2.9.0) format-patch --base=<commit> (or --base=auto for convenience) to record what (public, well-known) commit your patch series was built on]
[Check https://git-scm.com/docs/git-format-patch for more information]
url: https://github.com/0day-ci/linux/commits/Ming-Lei/block-support-multipage-bvec/20161029-163910
config: sparc-defconfig (attached as .config)
compiler: sparc-linux-gcc (GCC) 6.2.0
reproduce:
wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=sparc
All error/warnings (new ones prefixed by >>):
In file included from arch/sparc/include/asm/oplib.h:6:0,
from arch/sparc/include/asm/pgtable_32.h:21,
from arch/sparc/include/asm/pgtable.h:6,
from include/linux/mm.h:68,
from include/linux/bvec.h:25,
from include/linux/blk_types.h:9,
from include/linux/fs.h:31,
from include/linux/proc_fs.h:8,
from arch/sparc/include/asm/prom.h:22,
from include/linux/of.h:232,
from arch/sparc/include/asm/openprom.h:14,
from arch/sparc/include/asm/device.h:9,
from include/linux/device.h:30,
from include/linux/node.h:17,
from include/linux/cpu.h:16,
from include/linux/stop_machine.h:4,
from kernel/sched/sched.h:10,
from kernel/sched/loadavg.c:11:
>> arch/sparc/include/asm/oplib_32.h:105:39: warning: 'struct linux_prom_registers' declared inside parameter list will not be visible outside of this definition or declaration
int prom_startcpu(int cpunode, struct linux_prom_registers *context_table,
^~~~~~~~~~~~~~~~~~~~
arch/sparc/include/asm/oplib_32.h:168:36: warning: 'struct linux_prom_registers' declared inside parameter list will not be visible outside of this definition or declaration
void prom_apply_obio_ranges(struct linux_prom_registers *obioregs, int nregs);
^~~~~~~~~~~~~~~~~~~~
arch/sparc/include/asm/oplib_32.h:172:18: warning: 'struct linux_prom_registers' declared inside parameter list will not be visible outside of this definition or declaration
struct linux_prom_registers *sbusregs, int nregs);
^~~~~~~~~~~~~~~~~~~~
--
In file included from arch/sparc/include/asm/oplib.h:6:0,
from arch/sparc/include/asm/pgtable_32.h:21,
from arch/sparc/include/asm/pgtable.h:6,
from include/linux/mm.h:68,
from include/linux/bvec.h:25,
from include/linux/blk_types.h:9,
from include/linux/fs.h:31,
from include/linux/proc_fs.h:8,
from arch/sparc/include/asm/prom.h:22,
from include/linux/of.h:232,
from arch/sparc/include/asm/openprom.h:14,
from arch/sparc/prom/mp.c:12:
>> arch/sparc/include/asm/oplib_32.h:105:39: warning: 'struct linux_prom_registers' declared inside parameter list will not be visible outside of this definition or declaration
int prom_startcpu(int cpunode, struct linux_prom_registers *context_table,
^~~~~~~~~~~~~~~~~~~~
arch/sparc/include/asm/oplib_32.h:168:36: warning: 'struct linux_prom_registers' declared inside parameter list will not be visible outside of this definition or declaration
void prom_apply_obio_ranges(struct linux_prom_registers *obioregs, int nregs);
^~~~~~~~~~~~~~~~~~~~
arch/sparc/include/asm/oplib_32.h:172:18: warning: 'struct linux_prom_registers' declared inside parameter list will not be visible outside of this definition or declaration
struct linux_prom_registers *sbusregs, int nregs);
^~~~~~~~~~~~~~~~~~~~
>> arch/sparc/prom/mp.c:23:1: error: conflicting types for 'prom_startcpu'
prom_startcpu(int cpunode, struct linux_prom_registers *ctable_reg, int ctx, char *pc)
^~~~~~~~~~~~~
In file included from arch/sparc/include/asm/oplib.h:6:0,
from arch/sparc/include/asm/pgtable_32.h:21,
from arch/sparc/include/asm/pgtable.h:6,
from include/linux/mm.h:68,
from include/linux/bvec.h:25,
from include/linux/blk_types.h:9,
from include/linux/fs.h:31,
from include/linux/proc_fs.h:8,
from arch/sparc/include/asm/prom.h:22,
from include/linux/of.h:232,
from arch/sparc/include/asm/openprom.h:14,
from arch/sparc/prom/mp.c:12:
arch/sparc/include/asm/oplib_32.h:105:5: note: previous declaration of 'prom_startcpu' was here
int prom_startcpu(int cpunode, struct linux_prom_registers *context_table,
^~~~~~~~~~~~~
--
In file included from arch/sparc/include/asm/oplib.h:6:0,
from arch/sparc/include/asm/pgtable_32.h:21,
from arch/sparc/include/asm/pgtable.h:6,
from include/linux/mm.h:68,
from include/linux/bvec.h:25,
from include/linux/blk_types.h:9,
from include/linux/fs.h:31,
from include/linux/proc_fs.h:8,
from arch/sparc/include/asm/prom.h:22,
from include/linux/of.h:232,
from arch/sparc/include/asm/openprom.h:14,
from arch/sparc/prom/ranges.c:11:
>> arch/sparc/include/asm/oplib_32.h:105:39: warning: 'struct linux_prom_registers' declared inside parameter list will not be visible outside of this definition or declaration
int prom_startcpu(int cpunode, struct linux_prom_registers *context_table,
^~~~~~~~~~~~~~~~~~~~
arch/sparc/include/asm/oplib_32.h:168:36: warning: 'struct linux_prom_registers' declared inside parameter list will not be visible outside of this definition or declaration
void prom_apply_obio_ranges(struct linux_prom_registers *obioregs, int nregs);
^~~~~~~~~~~~~~~~~~~~
arch/sparc/include/asm/oplib_32.h:172:18: warning: 'struct linux_prom_registers' declared inside parameter list will not be visible outside of this definition or declaration
struct linux_prom_registers *sbusregs, int nregs);
^~~~~~~~~~~~~~~~~~~~
>> arch/sparc/prom/ranges.c:57:6: error: conflicting types for 'prom_apply_obio_ranges'
void prom_apply_obio_ranges(struct linux_prom_registers *regs, int nregs)
^~~~~~~~~~~~~~~~~~~~~~
In file included from arch/sparc/include/asm/oplib.h:6:0,
from arch/sparc/include/asm/pgtable_32.h:21,
from arch/sparc/include/asm/pgtable.h:6,
from include/linux/mm.h:68,
from include/linux/bvec.h:25,
from include/linux/blk_types.h:9,
from include/linux/fs.h:31,
from include/linux/proc_fs.h:8,
from arch/sparc/include/asm/prom.h:22,
from include/linux/of.h:232,
from arch/sparc/include/asm/openprom.h:14,
from arch/sparc/prom/ranges.c:11:
arch/sparc/include/asm/oplib_32.h:168:6: note: previous declaration of 'prom_apply_obio_ranges' was here
void prom_apply_obio_ranges(struct linux_prom_registers *obioregs, int nregs);
^~~~~~~~~~~~~~~~~~~~~~
In file included from include/linux/linkage.h:6:0,
from include/linux/kernel.h:6,
from include/linux/list.h:8,
from include/linux/module.h:9,
from arch/sparc/prom/ranges.c:9:
arch/sparc/prom/ranges.c:62:15: error: conflicting types for 'prom_apply_obio_ranges'
EXPORT_SYMBOL(prom_apply_obio_ranges);
^
include/linux/export.h:58:21: note: in definition of macro '___EXPORT_SYMBOL'
extern typeof(sym) sym; \
^~~
>> arch/sparc/prom/ranges.c:62:1: note: in expansion of macro 'EXPORT_SYMBOL'
EXPORT_SYMBOL(prom_apply_obio_ranges);
^~~~~~~~~~~~~
In file included from arch/sparc/include/asm/oplib.h:6:0,
from arch/sparc/include/asm/pgtable_32.h:21,
from arch/sparc/include/asm/pgtable.h:6,
from include/linux/mm.h:68,
from include/linux/bvec.h:25,
from include/linux/blk_types.h:9,
from include/linux/fs.h:31,
from include/linux/proc_fs.h:8,
from arch/sparc/include/asm/prom.h:22,
from include/linux/of.h:232,
from arch/sparc/include/asm/openprom.h:14,
from arch/sparc/prom/ranges.c:11:
arch/sparc/include/asm/oplib_32.h:168:6: note: previous declaration of 'prom_apply_obio_ranges' was here
void prom_apply_obio_ranges(struct linux_prom_registers *obioregs, int nregs);
^~~~~~~~~~~~~~~~~~~~~~
>> arch/sparc/prom/ranges.c:87:6: error: conflicting types for 'prom_apply_generic_ranges'
void prom_apply_generic_ranges(phandle node, phandle parent,
^~~~~~~~~~~~~~~~~~~~~~~~~
In file included from arch/sparc/include/asm/oplib.h:6:0,
from arch/sparc/include/asm/pgtable_32.h:21,
from arch/sparc/include/asm/pgtable.h:6,
from include/linux/mm.h:68,
from include/linux/bvec.h:25,
from include/linux/blk_types.h:9,
from include/linux/fs.h:31,
from include/linux/proc_fs.h:8,
from arch/sparc/include/asm/prom.h:22,
from include/linux/of.h:232,
from arch/sparc/include/asm/openprom.h:14,
from arch/sparc/prom/ranges.c:11:
arch/sparc/include/asm/oplib_32.h:171:6: note: previous declaration of 'prom_apply_generic_ranges' was here
void prom_apply_generic_ranges(phandle node, phandle parent,
^~~~~~~~~~~~~~~~~~~~~~~~~
--
In file included from include/linux/bvec.h:25:0,
from include/linux/blk_types.h:9,
from include/linux/fs.h:31,
from include/linux/proc_fs.h:8,
from arch/sparc/include/asm/prom.h:22,
from include/linux/of.h:232,
from arch/sparc/include/asm/openprom.h:14,
from arch/sparc/include/asm/oplib_32.h:11,
from arch/sparc/include/asm/oplib.h:6,
from arch/sparc/include/asm/pgtable_32.h:21,
from arch/sparc/include/asm/pgtable.h:6,
from mm/init-mm.c:9:
include/linux/mm.h: In function 'is_vmalloc_addr':
>> include/linux/mm.h:486:17: error: 'VMALLOC_START' undeclared (first use in this function)
return addr >= VMALLOC_START && addr < VMALLOC_END;
^~~~~~~~~~~~~
include/linux/mm.h:486:17: note: each undeclared identifier is reported only once for each function it appears in
>> include/linux/mm.h:486:41: error: 'VMALLOC_END' undeclared (first use in this function)
return addr >= VMALLOC_START && addr < VMALLOC_END;
^~~~~~~~~~~
include/linux/mm.h: In function 'maybe_mkwrite':
>> include/linux/mm.h:624:9: error: implicit declaration of function 'pte_mkwrite' [-Werror=implicit-function-declaration]
pte = pte_mkwrite(pte);
^~~~~~~~~~~
In file included from include/linux/bvec.h:25:0,
from include/linux/blk_types.h:9,
from include/linux/fs.h:31,
from include/linux/proc_fs.h:8,
from arch/sparc/include/asm/prom.h:22,
from include/linux/of.h:232,
from arch/sparc/include/asm/openprom.h:14,
from arch/sparc/include/asm/oplib_32.h:11,
from arch/sparc/include/asm/oplib.h:6,
from arch/sparc/include/asm/pgtable_32.h:21,
from arch/sparc/include/asm/pgtable.h:6,
from mm/init-mm.c:9:
include/linux/mm.h: In function 'pgtable_init':
>> include/linux/mm.h:1674:2: error: implicit declaration of function 'pgtable_cache_init' [-Werror=implicit-function-declaration]
pgtable_cache_init();
^~~~~~~~~~~~~~~~~~
In file included from arch/sparc/include/asm/pgtable.h:6:0,
from mm/init-mm.c:9:
arch/sparc/include/asm/pgtable_32.h: At top level:
>> arch/sparc/include/asm/pgtable_32.h:245:21: error: conflicting types for 'pte_mkwrite'
static inline pte_t pte_mkwrite(pte_t pte)
^~~~~~~~~~~
In file included from include/linux/bvec.h:25:0,
from include/linux/blk_types.h:9,
from include/linux/fs.h:31,
from include/linux/proc_fs.h:8,
from arch/sparc/include/asm/prom.h:22,
from include/linux/of.h:232,
from arch/sparc/include/asm/openprom.h:14,
from arch/sparc/include/asm/oplib_32.h:11,
from arch/sparc/include/asm/oplib.h:6,
from arch/sparc/include/asm/pgtable_32.h:21,
from arch/sparc/include/asm/pgtable.h:6,
from mm/init-mm.c:9:
include/linux/mm.h:624:9: note: previous implicit declaration of 'pte_mkwrite' was here
pte = pte_mkwrite(pte);
^~~~~~~~~~~
cc1: some warnings being treated as errors
vim +/VMALLOC_START +486 include/linux/mm.h
0738c4bb8 Paul Mundt 2008-03-12 480 */
bb00a789e Yaowei Bai 2016-05-19 481 static inline bool is_vmalloc_addr(const void *x)
9e2779fa2 Christoph Lameter 2008-02-04 482 {
0738c4bb8 Paul Mundt 2008-03-12 483 #ifdef CONFIG_MMU
9e2779fa2 Christoph Lameter 2008-02-04 484 unsigned long addr = (unsigned long)x;
9e2779fa2 Christoph Lameter 2008-02-04 485
9e2779fa2 Christoph Lameter 2008-02-04 @486 return addr >= VMALLOC_START && addr < VMALLOC_END;
0738c4bb8 Paul Mundt 2008-03-12 487 #else
bb00a789e Yaowei Bai 2016-05-19 488 return false;
8ca3ed87d David Howells 2008-02-23 489 #endif
0738c4bb8 Paul Mundt 2008-03-12 490 }
81ac3ad90 KAMEZAWA Hiroyuki 2009-09-22 491 #ifdef CONFIG_MMU
81ac3ad90 KAMEZAWA Hiroyuki 2009-09-22 492 extern int is_vmalloc_or_module_addr(const void *x);
81ac3ad90 KAMEZAWA Hiroyuki 2009-09-22 493 #else
934831d06 David Howells 2009-09-24 494 static inline int is_vmalloc_or_module_addr(const void *x)
81ac3ad90 KAMEZAWA Hiroyuki 2009-09-22 495 {
81ac3ad90 KAMEZAWA Hiroyuki 2009-09-22 496 return 0;
81ac3ad90 KAMEZAWA Hiroyuki 2009-09-22 497 }
81ac3ad90 KAMEZAWA Hiroyuki 2009-09-22 498 #endif
9e2779fa2 Christoph Lameter 2008-02-04 499
39f1f78d5 Al Viro 2014-05-06 500 extern void kvfree(const void *addr);
39f1f78d5 Al Viro 2014-05-06 501
53f9263ba Kirill A. Shutemov 2016-01-15 502 static inline atomic_t *compound_mapcount_ptr(struct page *page)
53f9263ba Kirill A. Shutemov 2016-01-15 503 {
53f9263ba Kirill A. Shutemov 2016-01-15 504 return &page[1].compound_mapcount;
53f9263ba Kirill A. Shutemov 2016-01-15 505 }
53f9263ba Kirill A. Shutemov 2016-01-15 506
53f9263ba Kirill A. Shutemov 2016-01-15 507 static inline int compound_mapcount(struct page *page)
53f9263ba Kirill A. Shutemov 2016-01-15 508 {
5f527c2b3 Andrea Arcangeli 2016-05-20 509 VM_BUG_ON_PAGE(!PageCompound(page), page);
53f9263ba Kirill A. Shutemov 2016-01-15 510 page = compound_head(page);
53f9263ba Kirill A. Shutemov 2016-01-15 511 return atomic_read(compound_mapcount_ptr(page)) + 1;
53f9263ba Kirill A. Shutemov 2016-01-15 512 }
53f9263ba Kirill A. Shutemov 2016-01-15 513
ccaafd7fd Joonsoo Kim 2015-02-10 514 /*
70b50f94f Andrea Arcangeli 2011-11-02 515 * The atomic page->_mapcount, starts from -1: so that transitions
70b50f94f Andrea Arcangeli 2011-11-02 516 * both from it and to it can be tracked, using atomic_inc_and_test
70b50f94f Andrea Arcangeli 2011-11-02 517 * and atomic_add_negative(-1).
70b50f94f Andrea Arcangeli 2011-11-02 518 */
22b751c3d Mel Gorman 2013-02-22 519 static inline void page_mapcount_reset(struct page *page)
70b50f94f Andrea Arcangeli 2011-11-02 520 {
70b50f94f Andrea Arcangeli 2011-11-02 521 atomic_set(&(page)->_mapcount, -1);
70b50f94f Andrea Arcangeli 2011-11-02 522 }
70b50f94f Andrea Arcangeli 2011-11-02 523
b20ce5e03 Kirill A. Shutemov 2016-01-15 524 int __page_mapcount(struct page *page);
b20ce5e03 Kirill A. Shutemov 2016-01-15 525
70b50f94f Andrea Arcangeli 2011-11-02 526 static inline int page_mapcount(struct page *page)
70b50f94f Andrea Arcangeli 2011-11-02 527 {
1d148e218 Wang, Yalin 2015-02-11 528 VM_BUG_ON_PAGE(PageSlab(page), page);
53f9263ba Kirill A. Shutemov 2016-01-15 529
b20ce5e03 Kirill A. Shutemov 2016-01-15 530 if (unlikely(PageCompound(page)))
b20ce5e03 Kirill A. Shutemov 2016-01-15 531 return __page_mapcount(page);
b20ce5e03 Kirill A. Shutemov 2016-01-15 532 return atomic_read(&page->_mapcount) + 1;
53f9263ba Kirill A. Shutemov 2016-01-15 533 }
b20ce5e03 Kirill A. Shutemov 2016-01-15 534
b20ce5e03 Kirill A. Shutemov 2016-01-15 535 #ifdef CONFIG_TRANSPARENT_HUGEPAGE
b20ce5e03 Kirill A. Shutemov 2016-01-15 536 int total_mapcount(struct page *page);
6d0a07edd Andrea Arcangeli 2016-05-12 537 int page_trans_huge_mapcount(struct page *page, int *total_mapcount);
b20ce5e03 Kirill A. Shutemov 2016-01-15 538 #else
b20ce5e03 Kirill A. Shutemov 2016-01-15 539 static inline int total_mapcount(struct page *page)
b20ce5e03 Kirill A. Shutemov 2016-01-15 540 {
b20ce5e03 Kirill A. Shutemov 2016-01-15 541 return page_mapcount(page);
70b50f94f Andrea Arcangeli 2011-11-02 542 }
6d0a07edd Andrea Arcangeli 2016-05-12 543 static inline int page_trans_huge_mapcount(struct page *page,
6d0a07edd Andrea Arcangeli 2016-05-12 544 int *total_mapcount)
6d0a07edd Andrea Arcangeli 2016-05-12 545 {
6d0a07edd Andrea Arcangeli 2016-05-12 546 int mapcount = page_mapcount(page);
6d0a07edd Andrea Arcangeli 2016-05-12 547 if (total_mapcount)
6d0a07edd Andrea Arcangeli 2016-05-12 548 *total_mapcount = mapcount;
6d0a07edd Andrea Arcangeli 2016-05-12 549 return mapcount;
6d0a07edd Andrea Arcangeli 2016-05-12 550 }
b20ce5e03 Kirill A. Shutemov 2016-01-15 551 #endif
70b50f94f Andrea Arcangeli 2011-11-02 552
b49af68ff Christoph Lameter 2007-05-06 553 static inline struct page *virt_to_head_page(const void *x)
b49af68ff Christoph Lameter 2007-05-06 554 {
b49af68ff Christoph Lameter 2007-05-06 555 struct page *page = virt_to_page(x);
ccaafd7fd Joonsoo Kim 2015-02-10 556
1d798ca3f Kirill A. Shutemov 2015-11-06 557 return compound_head(page);
b49af68ff Christoph Lameter 2007-05-06 558 }
b49af68ff Christoph Lameter 2007-05-06 559
ddc58f27f Kirill A. Shutemov 2016-01-15 560 void __put_page(struct page *page);
ddc58f27f Kirill A. Shutemov 2016-01-15 561
1d7ea7324 Alexander Zarochentsev 2006-08-13 562 void put_pages_list(struct list_head *pages);
^1da177e4 Linus Torvalds 2005-04-16 563
8dfcc9ba2 Nick Piggin 2006-03-22 564 void split_page(struct page *page, unsigned int order);
8dfcc9ba2 Nick Piggin 2006-03-22 565
^1da177e4 Linus Torvalds 2005-04-16 566 /*
33f2ef89f Andy Whitcroft 2006-12-06 567 * Compound pages have a destructor function. Provide a
33f2ef89f Andy Whitcroft 2006-12-06 568 * prototype for that function and accessor functions.
f1e61557f Kirill A. Shutemov 2015-11-06 569 * These are _only_ valid on the head of a compound page.
33f2ef89f Andy Whitcroft 2006-12-06 570 */
f1e61557f Kirill A. Shutemov 2015-11-06 571 typedef void compound_page_dtor(struct page *);
f1e61557f Kirill A. Shutemov 2015-11-06 572
f1e61557f Kirill A. Shutemov 2015-11-06 573 /* Keep the enum in sync with compound_page_dtors array in mm/page_alloc.c */
f1e61557f Kirill A. Shutemov 2015-11-06 574 enum compound_dtor_id {
f1e61557f Kirill A. Shutemov 2015-11-06 575 NULL_COMPOUND_DTOR,
f1e61557f Kirill A. Shutemov 2015-11-06 576 COMPOUND_PAGE_DTOR,
f1e61557f Kirill A. Shutemov 2015-11-06 577 #ifdef CONFIG_HUGETLB_PAGE
f1e61557f Kirill A. Shutemov 2015-11-06 578 HUGETLB_PAGE_DTOR,
f1e61557f Kirill A. Shutemov 2015-11-06 579 #endif
9a982250f Kirill A. Shutemov 2016-01-15 580 #ifdef CONFIG_TRANSPARENT_HUGEPAGE
9a982250f Kirill A. Shutemov 2016-01-15 581 TRANSHUGE_PAGE_DTOR,
9a982250f Kirill A. Shutemov 2016-01-15 582 #endif
f1e61557f Kirill A. Shutemov 2015-11-06 583 NR_COMPOUND_DTORS,
f1e61557f Kirill A. Shutemov 2015-11-06 584 };
f1e61557f Kirill A. Shutemov 2015-11-06 585 extern compound_page_dtor * const compound_page_dtors[];
33f2ef89f Andy Whitcroft 2006-12-06 586
33f2ef89f Andy Whitcroft 2006-12-06 587 static inline void set_compound_page_dtor(struct page *page,
f1e61557f Kirill A. Shutemov 2015-11-06 588 enum compound_dtor_id compound_dtor)
33f2ef89f Andy Whitcroft 2006-12-06 589 {
f1e61557f Kirill A. Shutemov 2015-11-06 590 VM_BUG_ON_PAGE(compound_dtor >= NR_COMPOUND_DTORS, page);
f1e61557f Kirill A. Shutemov 2015-11-06 591 page[1].compound_dtor = compound_dtor;
33f2ef89f Andy Whitcroft 2006-12-06 592 }
33f2ef89f Andy Whitcroft 2006-12-06 593
33f2ef89f Andy Whitcroft 2006-12-06 594 static inline compound_page_dtor *get_compound_page_dtor(struct page *page)
33f2ef89f Andy Whitcroft 2006-12-06 595 {
f1e61557f Kirill A. Shutemov 2015-11-06 596 VM_BUG_ON_PAGE(page[1].compound_dtor >= NR_COMPOUND_DTORS, page);
f1e61557f Kirill A. Shutemov 2015-11-06 597 return compound_page_dtors[page[1].compound_dtor];
33f2ef89f Andy Whitcroft 2006-12-06 598 }
33f2ef89f Andy Whitcroft 2006-12-06 599
d00181b96 Kirill A. Shutemov 2015-11-06 600 static inline unsigned int compound_order(struct page *page)
d85f33855 Christoph Lameter 2007-05-06 601 {
6d7779538 Christoph Lameter 2007-05-06 602 if (!PageHead(page))
d85f33855 Christoph Lameter 2007-05-06 603 return 0;
e4b294c2d Kirill A. Shutemov 2015-02-11 604 return page[1].compound_order;
d85f33855 Christoph Lameter 2007-05-06 605 }
d85f33855 Christoph Lameter 2007-05-06 606
f1e61557f Kirill A. Shutemov 2015-11-06 607 static inline void set_compound_order(struct page *page, unsigned int order)
d85f33855 Christoph Lameter 2007-05-06 608 {
e4b294c2d Kirill A. Shutemov 2015-02-11 609 page[1].compound_order = order;
d85f33855 Christoph Lameter 2007-05-06 610 }
d85f33855 Christoph Lameter 2007-05-06 611
9a982250f Kirill A. Shutemov 2016-01-15 612 void free_compound_page(struct page *page);
9a982250f Kirill A. Shutemov 2016-01-15 613
3dece370e Michal Simek 2011-01-21 614 #ifdef CONFIG_MMU
33f2ef89f Andy Whitcroft 2006-12-06 615 /*
14fd403f2 Andrea Arcangeli 2011-01-13 616 * Do pte_mkwrite, but only if the vma says VM_WRITE. We do this when
14fd403f2 Andrea Arcangeli 2011-01-13 617 * servicing faults for write access. In the normal case, do always want
14fd403f2 Andrea Arcangeli 2011-01-13 618 * pte_mkwrite. But get_user_pages can cause write faults for mappings
14fd403f2 Andrea Arcangeli 2011-01-13 619 * that do not have writing enabled, when used by access_process_vm.
14fd403f2 Andrea Arcangeli 2011-01-13 620 */
14fd403f2 Andrea Arcangeli 2011-01-13 621 static inline pte_t maybe_mkwrite(pte_t pte, struct vm_area_struct *vma)
14fd403f2 Andrea Arcangeli 2011-01-13 622 {
14fd403f2 Andrea Arcangeli 2011-01-13 623 if (likely(vma->vm_flags & VM_WRITE))
14fd403f2 Andrea Arcangeli 2011-01-13 @624 pte = pte_mkwrite(pte);
14fd403f2 Andrea Arcangeli 2011-01-13 625 return pte;
14fd403f2 Andrea Arcangeli 2011-01-13 626 }
8c6e50b02 Kirill A. Shutemov 2014-04-07 627
:::::: The code at line 486 was first introduced by commit
:::::: 9e2779fa281cfda13ac060753d674bbcaa23367e is_vmalloc_addr(): Check if an address is within the vmalloc boundaries
:::::: TO: Christoph Lameter <clameter@....com>
:::::: CC: Linus Torvalds <torvalds@...dy.linux-foundation.org>
---
0-DAY kernel test infrastructure Open Source Technology Center
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