linux-kernel - Re: [PATCH v4 1/6] mm: memory: extend finish

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Date: Wed, 5 Jun 2024 09:16:32 +0800
From: Baolin Wang <baolin.wang@...ux.alibaba.com>
To: kernel test robot <lkp@...el.com>, akpm@...ux-foundation.org,
 hughd@...gle.com
Cc: oe-kbuild-all@...ts.linux.dev, willy@...radead.org, david@...hat.com,
 wangkefeng.wang@...wei.com, ying.huang@...el.com, 21cnbao@...il.com,
 ryan.roberts@....com, shy828301@...il.com, ziy@...dia.com,
 ioworker0@...il.com, da.gomez@...sung.com, p.raghav@...sung.com,
 linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 1/6] mm: memory: extend finish_fault() to support large
 folio



On 2024/6/4 22:58, kernel test robot wrote:
> Hi Baolin,
> 
> kernel test robot noticed the following build warnings:
> 
> [auto build test WARNING on akpm-mm/mm-everything]
> [also build test WARNING on linus/master v6.10-rc2 next-20240604]
> [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/Baolin-Wang/mm-memory-extend-finish_fault-to-support-large-folio/20240604-182028
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
> patch link:    https://lore.kernel.org/r/bee11bfd9157e60aaea6db033a4af7c13c982c82.1717495894.git.baolin.wang%40linux.alibaba.com
> patch subject: [PATCH v4 1/6] mm: memory: extend finish_fault() to support large folio
> config: openrisc-allnoconfig (https://download.01.org/0day-ci/archive/20240604/202406042210.20LfqwNd-lkp@intel.com/config)
> compiler: or1k-linux-gcc (GCC) 13.2.0
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240604/202406042210.20LfqwNd-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/202406042210.20LfqwNd-lkp@intel.com/
> 
> All warnings (new ones prefixed by >>):
> 
>     mm/memory.c: In function 'finish_fault':
>>> mm/memory.c:4838:29: warning: unused variable 'i' [-Wunused-variable]
>      4838 |         int type, nr_pages, i;
>           |                             ^

Oops, thanks for reporting. Forgot to remove the variable 'i' when 
changing to use update_mmu_tlb_range().

I see Andrew has already helped to remove this unused variable 'i'. 
Thanks Andrew.