Re: [PATCH v2 2/3] mm: vmscan: refactor updating reclaimed pages in reclaim_state

From: kernel test robot <lkp@intel.com>
To: Yosry Ahmed <yosryahmed@google.com>,
	Alexander Viro <viro@zeniv.linux.org.uk>,
	"Darrick J. Wong" <djwong@kernel.org>,
	Christoph Lameter <cl@linux-foundation.org>,
	David Rientjes <rientjes@google.com>,
	Joonsoo Kim <iamjoonsoo.kim@lge.com>,
	Vlastimil Babka <vbabka@suse.cz>,
	Roman Gushchin <roman.gushchin@linux.dev>,
	Hyeonggon Yoo <42.hyeyoo@gmail.com>,
	"Matthew Wilcox (Oracle)" <willy@infradead.org>,
	Miaohe Lin <linmiaohe@huawei.com>,
	David Hildenbrand <david@redhat.com>,
	Johannes Weiner <hannes@cmpxchg.org>,
	Peter Xu <peterx@redhat.com>, NeilBrown <neilb@suse.de>,
	Shakeel Butt <shakeelb@google.com>,
	Michal Hocko <mhocko@kernel.org>, Yu Zhao <yuzhao@google.com>
Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev,
	linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-xfs@vger.kernel.org, linux-mm@kvack.org,
	Yosry Ahmed <yosryahmed@google.com>
Subject: Re: [PATCH v2 2/3] mm: vmscan: refactor updating reclaimed pages in reclaim_state
Date: Fri, 10 Mar 2023 10:37:25 +0800	[thread overview]
Message-ID: <202303101037.13QFIjZH-lkp@intel.com> (raw)
In-Reply-To: <20230309093109.3039327-3-yosryahmed@google.com>

Hi Yosry,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on xfs-linux/for-next]
[also build test ERROR on linus/master v6.3-rc1 next-20230309]
[cannot apply to akpm-mm/mm-everything vbabka-slab/for-next]
[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/Yosry-Ahmed/mm-vmscan-move-set_task_reclaim_state-after-cgroup_reclaim/20230309-173354
base:   https://git.kernel.org/pub/scm/fs/xfs/xfs-linux.git for-next
patch link:    https://lore.kernel.org/r/20230309093109.3039327-3-yosryahmed%40google.com
patch subject: [PATCH v2 2/3] mm: vmscan: refactor updating reclaimed pages in reclaim_state
config: powerpc-g5_defconfig (https://download.01.org/0day-ci/archive/20230310/202303101037.13QFIjZH-lkp@intel.com/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project 67409911353323ca5edf2049ef0df54132fa1ca7)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install powerpc cross compiling tool for clang build
        # apt-get install binutils-powerpc-linux-gnu
        # https://github.com/intel-lab-lkp/linux/commit/63df60b27250f3f7a2892f99f27258b60a6e8e13
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Yosry-Ahmed/mm-vmscan-move-set_task_reclaim_state-after-cgroup_reclaim/20230309-173354
        git checkout 63df60b27250f3f7a2892f99f27258b60a6e8e13
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=powerpc olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=powerpc SHELL=/bin/bash arch/powerpc/kernel/ drivers/net/usb/ fs/xfs/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202303101037.13QFIjZH-lkp@intel.com/

All errors (new ones prefixed by >>):

>> fs/xfs/xfs_buf.c:289:2: error: call to undeclared function 'report_freed_pages'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
           report_freed_pages(bp->b_page_count);
           ^
   fs/xfs/xfs_buf.c:289:2: note: did you mean 'mempool_free_pages'?
   include/linux/mempool.h:102:6: note: 'mempool_free_pages' declared here
   void mempool_free_pages(void *element, void *pool_data);
        ^
   1 error generated.

vim +/report_freed_pages +289 fs/xfs/xfs_buf.c

   273	
   274	static void
   275	xfs_buf_free_pages(
   276		struct xfs_buf	*bp)
   277	{
   278		uint		i;
   279	
   280		ASSERT(bp->b_flags & _XBF_PAGES);
   281	
   282		if (xfs_buf_is_vmapped(bp))
   283			vm_unmap_ram(bp->b_addr, bp->b_page_count);
   284	
   285		for (i = 0; i < bp->b_page_count; i++) {
   286			if (bp->b_pages[i])
   287				__free_page(bp->b_pages[i]);
   288		}
 > 289		report_freed_pages(bp->b_page_count);
   290	
   291		if (bp->b_pages != bp->b_page_array)
   292			kmem_free(bp->b_pages);
   293		bp->b_pages = NULL;
   294		bp->b_flags &= ~_XBF_PAGES;
   295	}
   296	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests