linux-kernel - Re: [PATCH 2/2] kpageflags: fix wrong KPF_THP on non-pmd-mappable compound pages

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Date: Thu, 27 Jun 2024 12:38:54 +0000
From: ran xiaokai <ranxiaokai627@....com>
To: lkp@...el.com
Cc: baohua@...nel.org,
	linux-kernel@...r.kernel.org,
	linux-mm@...ck.org,
	llvm@...ts.linux.dev,
	oe-kbuild-all@...ts.linux.dev,
	peterx@...hat.com,
	ran.xiaokai@....com.cn,
	ranxiaokai627@....com,
	ziy@...dia.com
Subject: Re: [PATCH 2/2] kpageflags: fix wrong KPF_THP on non-pmd-mappable compound pages

> Hi ran,
> 
> kernel test robot noticed the following build errors:
> 
> [auto build test ERROR on akpm-mm/mm-everything]
> [also build test ERROR on linus/master v6.10-rc5 next-20240625]
> [If your patch is applied to the wrong git tree, kindly drop us a note.
> And when submitting patch, we suggest to use '--base' as documented in
> https://git-scm.com/docs/git-format-patch#_base_tree_information]
> 
> url:    https://github.com/intel-lab-lkp/linux/commits/ran-xiaokai/mm-Constify-folio_order-folio_test_pmd_mappable/20240626-113027
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
> patch link:    https://lore.kernel.org/r/20240626024924.1155558-3-ranxiaokai627%40163.com
> patch subject: [PATCH 2/2] kpageflags: fix wrong KPF_THP on non-pmd-mappable compound pages
> config: x86_64-allnoconfig (https://download.01.org/0day-ci/archive/20240626/202406262300.iAURISyJ-lkp@intel.com/config)
> compiler: clang version 18.1.5 (https://github.com/llvm/llvm-project 617a15a9eac96088ae5e9134248d8236e34b91b1)
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240626/202406262300.iAURISyJ-lkp@intel.com/reproduce)
> 
> If you fix the issue in a separate patch/commit (i.e. not just a new version of
> the same patch/commit), kindly add following tags
> | Reported-by: kernel test robot <lkp@...el.com>
> | Closes: https://lore.kernel.org/oe-kbuild-all/202406262300.iAURISyJ-lkp@intel.com/
> 
> All errors (new ones prefixed by >>):
> 
> >> fs/proc/page.c:151:35: error: passing 'const struct folio *' to parameter of type 'struct folio *' discards qualifiers [-Werror,-Wincompatible-pointer-types-discards-qualifiers]
>      151 |         else if (folio_test_pmd_mappable(folio)) {
>          |                                          ^~~~~
>    include/linux/huge_mm.h:438:58: note: passing argument to parameter 'folio' here
>      438 | static inline bool folio_test_pmd_mappable(struct folio *folio)
>          |                                                          ^
>    1 error generated.

Hi,

This patch is the second patch of the serial:
https://lore.kernel.org/lkml/20240626024924.1155558-1-ranxiaokai627@163.com/

and it relies on the first patch:
https://lore.kernel.org/lkml/20240626024924.1155558-2-ranxiaokai627@163.com/

and it seems the first patch is not applied.
Or in this case, we should not split these two patches?