From: kernel test robot <lkp@intel.com>
To: Kairui Song <ryncsn@gmail.com>, linux-mm@kvack.org
Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev,
Andrew Morton <akpm@linux-foundation.org>,
Linux Memory Management List <linux-mm@kvack.org>,
"Huang, Ying" <ying.huang@intel.com>,
David Hildenbrand <david@redhat.com>,
Hugh Dickins <hughd@google.com>,
Johannes Weiner <hannes@cmpxchg.org>,
Matthew Wilcox <willy@infradead.org>,
Michal Hocko <mhocko@suse.com>,
linux-kernel@vger.kernel.org, Kairui Song <kasong@tencent.com>
Subject: Re: [PATCH 06/24] swap: rework swapin_no_readahead arguments
Date: Mon, 20 Nov 2023 08:20:54 +0800 [thread overview]
Message-ID: <202311200826.8Nl5w3h8-lkp@intel.com> (raw)
In-Reply-To: <20231119194740.94101-7-ryncsn@gmail.com>
Hi Kairui,
kernel test robot noticed the following build warnings:
[auto build test WARNING on akpm-mm/mm-everything]
[also build test WARNING on linus/master v6.7-rc2 next-20231117]
[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/Kairui-Song/mm-swap-fix-a-potential-undefined-behavior-issue/20231120-035926
base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link: https://lore.kernel.org/r/20231119194740.94101-7-ryncsn%40gmail.com
patch subject: [PATCH 06/24] swap: rework swapin_no_readahead arguments
config: i386-buildonly-randconfig-003-20231120 (https://download.01.org/0day-ci/archive/20231120/202311200826.8Nl5w3h8-lkp@intel.com/config)
compiler: clang version 16.0.4 (https://github.com/llvm/llvm-project.git ae42196bc493ffe877a7e3dff8be32035dea4d07)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231120/202311200826.8Nl5w3h8-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202311200826.8Nl5w3h8-lkp@intel.com/
All warnings (new ones prefixed by >>):
>> mm/swap_state.c:872: warning: Function parameter or member 'mpol' not described in 'swapin_no_readahead'
>> mm/swap_state.c:872: warning: Function parameter or member 'ilx' not described in 'swapin_no_readahead'
>> mm/swap_state.c:872: warning: Function parameter or member 'mm' not described in 'swapin_no_readahead'
>> mm/swap_state.c:872: warning: Excess function parameter 'vmf' description in 'swapin_no_readahead'
vim +872 mm/swap_state.c
d9bfcfdc41e8e5 Huang Ying 2017-09-06 859
19f582d2684e47 Kairui Song 2023-11-20 860 /**
19f582d2684e47 Kairui Song 2023-11-20 861 * swapin_no_readahead - swap in pages skipping swap cache and readahead
19f582d2684e47 Kairui Song 2023-11-20 862 * @entry: swap entry of this memory
19f582d2684e47 Kairui Song 2023-11-20 863 * @gfp_mask: memory allocation flags
19f582d2684e47 Kairui Song 2023-11-20 864 * @vmf: fault information
19f582d2684e47 Kairui Song 2023-11-20 865 *
19f582d2684e47 Kairui Song 2023-11-20 866 * Returns the struct page for entry and addr after the swap entry is read
19f582d2684e47 Kairui Song 2023-11-20 867 * in.
19f582d2684e47 Kairui Song 2023-11-20 868 */
598f2616cde014 Kairui Song 2023-11-20 869 static struct page *swapin_no_readahead(swp_entry_t entry, gfp_t gfp_mask,
2538a5e96fe62f Kairui Song 2023-11-20 870 struct mempolicy *mpol, pgoff_t ilx,
2538a5e96fe62f Kairui Song 2023-11-20 871 struct mm_struct *mm)
19f582d2684e47 Kairui Song 2023-11-20 @872 {
19f582d2684e47 Kairui Song 2023-11-20 873 struct folio *folio;
2538a5e96fe62f Kairui Song 2023-11-20 874 struct page *page;
19f582d2684e47 Kairui Song 2023-11-20 875 void *shadow = NULL;
19f582d2684e47 Kairui Song 2023-11-20 876
2538a5e96fe62f Kairui Song 2023-11-20 877 page = alloc_pages_mpol(gfp_mask, 0, mpol, ilx, numa_node_id());
2538a5e96fe62f Kairui Song 2023-11-20 878 folio = (struct folio *)page;
19f582d2684e47 Kairui Song 2023-11-20 879 if (folio) {
2538a5e96fe62f Kairui Song 2023-11-20 880 if (mem_cgroup_swapin_charge_folio(folio, mm,
c2ac0dcbf9ab6a Kairui Song 2023-11-20 881 GFP_KERNEL, entry)) {
19f582d2684e47 Kairui Song 2023-11-20 882 folio_put(folio);
19f582d2684e47 Kairui Song 2023-11-20 883 return NULL;
19f582d2684e47 Kairui Song 2023-11-20 884 }
c2ac0dcbf9ab6a Kairui Song 2023-11-20 885
c2ac0dcbf9ab6a Kairui Song 2023-11-20 886 __folio_set_locked(folio);
c2ac0dcbf9ab6a Kairui Song 2023-11-20 887 __folio_set_swapbacked(folio);
c2ac0dcbf9ab6a Kairui Song 2023-11-20 888
19f582d2684e47 Kairui Song 2023-11-20 889 mem_cgroup_swapin_uncharge_swap(entry);
19f582d2684e47 Kairui Song 2023-11-20 890
19f582d2684e47 Kairui Song 2023-11-20 891 shadow = get_shadow_from_swap_cache(entry);
19f582d2684e47 Kairui Song 2023-11-20 892 if (shadow)
19f582d2684e47 Kairui Song 2023-11-20 893 workingset_refault(folio, shadow);
19f582d2684e47 Kairui Song 2023-11-20 894
19f582d2684e47 Kairui Song 2023-11-20 895 folio_add_lru(folio);
19f582d2684e47 Kairui Song 2023-11-20 896
19f582d2684e47 Kairui Song 2023-11-20 897 /* To provide entry to swap_readpage() */
19f582d2684e47 Kairui Song 2023-11-20 898 folio->swap = entry;
19f582d2684e47 Kairui Song 2023-11-20 899 swap_readpage(page, true, NULL);
19f582d2684e47 Kairui Song 2023-11-20 900 folio->private = NULL;
19f582d2684e47 Kairui Song 2023-11-20 901 }
19f582d2684e47 Kairui Song 2023-11-20 902
19f582d2684e47 Kairui Song 2023-11-20 903 return page;
19f582d2684e47 Kairui Song 2023-11-20 904 }
19f582d2684e47 Kairui Song 2023-11-20 905
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
next prev parent reply other threads:[~2023-11-20 0:22 UTC|newest]
Thread overview: 93+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-19 19:47 [PATCH 00/24] Swapin path refactor for optimization and bugfix Kairui Song
2023-11-19 19:47 ` [PATCH 01/24] mm/swap: fix a potential undefined behavior issue Kairui Song
2023-11-19 20:55 ` Matthew Wilcox
2023-11-20 3:35 ` Chris Li
2023-11-20 11:14 ` Kairui Song
2023-11-20 17:34 ` Chris Li
2023-11-19 19:47 ` [PATCH 02/24] mm/swapfile.c: add back some comment Kairui Song
2023-11-19 19:47 ` [PATCH 03/24] mm/swap: move no readahead swapin code to a stand alone helper Kairui Song
2023-11-19 21:00 ` Matthew Wilcox
2023-11-20 11:14 ` Kairui Song
2023-11-20 14:55 ` Dan Carpenter
2023-11-21 5:34 ` Chris Li
2023-11-22 17:33 ` Kairui Song
2023-11-19 19:47 ` [PATCH 04/24] mm/swap: avoid setting page lock bit and doing extra unlock check Kairui Song
2023-11-20 4:17 ` Chris Li
2023-11-20 11:15 ` Kairui Song
2023-11-20 17:44 ` Chris Li
2023-11-22 17:32 ` Kairui Song
2023-11-22 20:57 ` Chris Li
2023-11-24 8:14 ` Kairui Song
2023-11-24 8:37 ` Christopher Li
2023-11-19 19:47 ` [PATCH 05/24] mm/swap: move readahead policy checking into swapin_readahead Kairui Song
2023-11-21 6:15 ` Chris Li
2023-11-21 6:35 ` Kairui Song
2023-11-21 7:41 ` Chris Li
2023-11-21 8:32 ` Kairui Song
2023-11-21 15:24 ` Chris Li
2023-11-19 19:47 ` [PATCH 06/24] swap: rework swapin_no_readahead arguments Kairui Song
2023-11-20 0:20 ` kernel test robot [this message]
2023-11-21 6:44 ` Chris Li
2023-11-23 10:51 ` Kairui Song
2023-11-19 19:47 ` [PATCH 07/24] mm/swap: move swap_count to header to be shared Kairui Song
2023-11-21 6:51 ` Chris Li
2023-11-21 7:03 ` Kairui Song
2023-11-19 19:47 ` [PATCH 08/24] mm/swap: check readahead policy per entry Kairui Song
2023-11-20 6:04 ` Huang, Ying
2023-11-20 11:17 ` Kairui Song
2023-11-21 1:10 ` Huang, Ying
2023-11-21 5:20 ` Chris Li
2023-11-21 5:13 ` Chris Li
2023-11-21 7:54 ` Chris Li
2023-11-23 10:52 ` Kairui Song
2023-11-19 19:47 ` [PATCH 09/24] mm/swap: inline __swap_count Kairui Song
2023-11-20 7:41 ` Huang, Ying
2023-11-21 8:02 ` Chris Li
2023-11-19 19:47 ` [PATCH 10/24] mm/swap: remove nr_rotate_swap and related code Kairui Song
2023-11-21 15:45 ` Chris Li
2023-11-19 19:47 ` [PATCH 11/24] mm/swap: also handle swapcache lookup in swapin_readahead Kairui Song
2023-11-20 0:47 ` kernel test robot
2023-11-21 16:06 ` Chris Li
2023-11-24 8:42 ` Kairui Song
2023-11-24 9:10 ` Chris Li
2023-11-19 19:47 ` [PATCH 12/24] mm/swap: simplify arguments for swap_cache_get_folio Kairui Song
2023-11-21 16:36 ` Chris Li
2023-11-19 19:47 ` [PATCH 13/24] swap: simplify swap_cache_get_folio Kairui Song
2023-11-21 16:50 ` Chris Li
2023-11-19 19:47 ` [PATCH 14/24] mm/swap: do shadow lookup as well when doing swap cache lookup Kairui Song
2023-11-21 16:55 ` Chris Li
2023-11-19 19:47 ` [PATCH 15/24] mm/swap: avoid an duplicated swap cache lookup for SYNCHRONOUS_IO device Kairui Song
2023-11-21 17:15 ` Chris Li
2023-11-22 18:08 ` Kairui Song
2023-11-19 19:47 ` [PATCH 16/24] mm/swap: reduce scope of get_swap_device in swapin path Kairui Song
2023-11-19 21:12 ` Matthew Wilcox
2023-11-20 11:14 ` Kairui Song
2023-11-21 17:25 ` Chris Li
2023-11-22 0:36 ` Huang, Ying
2023-11-23 11:13 ` Kairui Song
2023-11-24 0:40 ` Huang, Ying
2023-11-19 19:47 ` [PATCH 17/24] mm/swap: fix false error when swapoff race with swapin Kairui Song
2023-11-19 19:47 ` [PATCH 18/24] mm/swap: introduce a helper non fault swapin Kairui Song
2023-11-20 1:07 ` kernel test robot
2023-11-22 4:40 ` Chris Li
2023-11-28 11:22 ` Kairui Song
2023-12-13 2:22 ` Chris Li
2023-11-19 19:47 ` [PATCH 19/24] shmem, swap: refactor error check on OOM or race Kairui Song
2023-11-20 7:04 ` Chris Li
2023-11-20 11:17 ` Kairui Song
2023-11-19 19:47 ` [PATCH 20/24] swap: simplify and make swap_find_cache static Kairui Song
2023-11-22 5:01 ` Chris Li
2023-11-19 19:47 ` [PATCH 21/24] swap: make swapin_readahead result checking argument mandatory Kairui Song
2023-11-22 5:15 ` Chris Li
2023-11-24 8:14 ` Kairui Song
2023-11-19 19:47 ` [PATCH 22/24] swap: make swap_cluster_readahead static Kairui Song
2023-11-22 5:20 ` Chris Li
2023-11-19 19:47 ` [PATCH 23/24] swap: fix multiple swap leak when after cgroup migrate Kairui Song
2023-11-20 7:35 ` Huang, Ying
2023-11-20 11:17 ` Kairui Song
2023-11-22 5:34 ` Chris Li
2023-11-19 19:47 ` [PATCH 24/24] mm/swap: change swapin_readahead to swapin_page_fault Kairui Song
2023-11-20 19:09 ` [PATCH 00/24] Swapin path refactor for optimization and bugfix Yosry Ahmed
2023-11-20 20:22 ` Chris Li
2023-11-22 6:46 ` Kairui Song
2023-11-22 6:43 ` Kairui Song
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