Re: [PATCH v1 2/2] mm: vmscan: ignore non-LRU-based reclaim in memcg reclaim
From: Yosry Ahmed
Date: Tue Feb 28 2023 - 12:19:06 EST
On Tue, Feb 28, 2023 at 3:56 AM kernel test robot <lkp@xxxxxxxxx> wrote:
>
> Hi Yosry,
>
> Thank you for the patch! Yet something to improve:
>
> [auto build test ERROR on akpm-mm/mm-everything]
> [also build test ERROR on linus/master next-20230228]
> [cannot apply to vbabka-slab/for-next xfs-linux/for-next v6.2]
> [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-refactor-updating-reclaimed-pages-in-reclaim_state/20230228-165214
> base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
> patch link: https://lore.kernel.org/r/20230228085002.2592473-3-yosryahmed%40google.com
> patch subject: [PATCH v1 2/2] mm: vmscan: ignore non-LRU-based reclaim in memcg reclaim
> config: i386-randconfig-a002-20230227 (https://download.01.org/0day-ci/archive/20230228/202302281933.vU1PHuZr-lkp@xxxxxxxxx/config)
> compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1)
> 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
> # https://github.com/intel-lab-lkp/linux/commit/f6d2b849f186a927925a29e289d60895048550f5
> git remote add linux-review https://github.com/intel-lab-lkp/linux
> git fetch --no-tags linux-review Yosry-Ahmed/mm-vmscan-refactor-updating-reclaimed-pages-in-reclaim_state/20230228-165214
> git checkout f6d2b849f186a927925a29e289d60895048550f5
> # save the config file
> mkdir build_dir && cp config build_dir/.config
> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 olddefconfig
> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash
>
> If you fix the issue, kindly add following tag where applicable
> | Reported-by: kernel test robot <lkp@xxxxxxxxx>
> | Link: https://lore.kernel.org/oe-kbuild-all/202302281933.vU1PHuZr-lkp@xxxxxxxxx/
>
> All errors (new ones prefixed by >>):
>
> >> mm/vmscan.c:549:13: error: redefinition of 'cgroup_reclaim'
> static bool cgroup_reclaim(struct scan_control *sc)
> ^
> mm/vmscan.c:191:13: note: previous definition is here
> static bool cgroup_reclaim(struct scan_control *sc)
> ^
> >> mm/vmscan.c:554:13: error: redefinition of 'global_reclaim'
> static bool global_reclaim(struct scan_control *sc)
> ^
> mm/vmscan.c:196:13: note: previous definition is here
> static bool global_reclaim(struct scan_control *sc)
> ^
> 2 errors generated.
Ugh yeah I didn't realize I am moving the definitions from within an
#ifdef CONFIG_MEMCG. I will just leave the definitions as-is and add a
forward declaration before the definition of
add_non_vmscan_reclaimed(), should also reduce the churn in the diff.
Will wait for a bit before re-spinning to gather some feedback on the
current version first.
>
>
> vim +/cgroup_reclaim +549 mm/vmscan.c
>
> 86750830468506 Yang Shi 2021-05-04 548
> b5ead35e7e1d34 Johannes Weiner 2019-11-30 @549 static bool cgroup_reclaim(struct scan_control *sc)
> 89b5fae5368f6a Johannes Weiner 2012-01-12 550 {
> b5ead35e7e1d34 Johannes Weiner 2019-11-30 551 return false;
> 89b5fae5368f6a Johannes Weiner 2012-01-12 552 }
> 97c9341f727105 Tejun Heo 2015-05-22 553
> a579086c99ed70 Yu Zhao 2022-12-21 @554 static bool global_reclaim(struct scan_control *sc)
> a579086c99ed70 Yu Zhao 2022-12-21 555 {
> a579086c99ed70 Yu Zhao 2022-12-21 556 return true;
> a579086c99ed70 Yu Zhao 2022-12-21 557 }
> a579086c99ed70 Yu Zhao 2022-12-21 558
>
> --
> 0-DAY CI Kernel Test Service
> https://github.com/intel/lkp-tests