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charset=us-ascii Content-Disposition: inline In-Reply-To: <20260126-swap-table-p3-v1-9-a74155fab9b0@tencent.com> X-Rspamd-Server: rspam11 X-Stat-Signature: 36hza5ricbrytp11d5or6mn7pwhcbj6y X-Rspam-User: X-Rspamd-Queue-Id: BE5614000B X-HE-Tag: 1769400260-833139 X-HE-Meta: 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 w/mWZECa GQ1ARCqFATPA6W6/jxQryaLpQo2nVxPbC+KmB+qAeCvDYdHfz55rNRoTZejxB4HpJmUuWR1GOaz4dosiRO3NLTpYFY8bsJMbxXBFPkx0DtOkB2OAi7xvQQfaVfUgY/KyJ73v4g4fSCBOegxOwZVh2uI6wzLLS9RDMADYWjyIVbUF67NlprwfKWkzf8n7pbH7CZ4VfjOf0Mm00GFrDTA2vxrrLApvYYGo0WN1gDHm2guRTi2MbctUlGNJo1WPMjRzjdGEIolXk1KgxLrA15UipYO5DuG/WERDlXB/E5JiqofSDju1ZBtRBKi6rp9iQf/DwJqTXU+ot3iTGLyR5Zu1kS8TtA/m+Lm1a0Mp0CqhEnOh+YAn3nGFbhl+WuGVo6fQ7Hm1O X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hi Kairui, kernel test robot noticed the following build warnings: [auto build test WARNING on 10de4550639e9df9242e32e9affc90ed75a27c7d] url: https://github.com/intel-lab-lkp/linux/commits/Kairui-Song/mm-swap-protect-si-swap_file-properly-and-use-as-a-mount-indicator/20260126-020149 base: 10de4550639e9df9242e32e9affc90ed75a27c7d patch link: https://lore.kernel.org/r/20260126-swap-table-p3-v1-9-a74155fab9b0%40tencent.com patch subject: [PATCH 09/12] mm, swap: use the swap table to track the swap count config: x86_64-rhel-9.4-ltp (https://download.01.org/0day-ci/archive/20260126/202601260524.qYN30lLA-lkp@intel.com/config) compiler: gcc-14 (Debian 14.2.0-19) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260126/202601260524.qYN30lLA-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 | Closes: https://lore.kernel.org/oe-kbuild-all/202601260524.qYN30lLA-lkp@intel.com/ All warnings (new ones prefixed by >>): mm/swapfile.c: In function 'unuse_pte_range': >> mm/swapfile.c:2351:31: warning: variable 'offset' set but not used [-Wunused-but-set-variable] 2351 | unsigned long offset; | ^~~~~~ >> mm/swapfile.c:2346:34: warning: variable 'si' set but not used [-Wunused-but-set-variable] 2346 | struct swap_info_struct *si; | ^~ vim +/offset +2351 mm/swapfile.c ^1da177e4c3f41 Linus Torvalds 2005-04-16 2340 ^1da177e4c3f41 Linus Torvalds 2005-04-16 2341 static int unuse_pte_range(struct vm_area_struct *vma, pmd_t *pmd, ^1da177e4c3f41 Linus Torvalds 2005-04-16 2342 unsigned long addr, unsigned long end, 10a9c496789fe2 Christoph Hellwig 2022-01-21 2343 unsigned int type) ^1da177e4c3f41 Linus Torvalds 2005-04-16 2344 { d850fa72987378 Hugh Dickins 2023-06-08 2345 pte_t *pte = NULL; b56a2d8af9147a Vineeth Remanan Pillai 2019-03-05 @2346 struct swap_info_struct *si; ^1da177e4c3f41 Linus Torvalds 2005-04-16 2347 b56a2d8af9147a Vineeth Remanan Pillai 2019-03-05 2348 si = swap_info[type]; ^1da177e4c3f41 Linus Torvalds 2005-04-16 2349 do { f102cd8b173e06 Matthew Wilcox (Oracle 2022-09-02 2350) struct folio *folio; f102cd8b173e06 Matthew Wilcox (Oracle 2022-09-02 @2351) unsigned long offset; 0177fe675b3916 Kairui Song 2026-01-26 2352 unsigned long swp_tb; 3f79b187ad2f67 Kairui Song 2022-12-20 2353 unsigned char swp_count; 06fb61462bdea3 Lorenzo Stoakes 2025-11-10 2354 softleaf_t entry; d850fa72987378 Hugh Dickins 2023-06-08 2355 int ret; c33c794828f212 Ryan Roberts 2023-06-12 2356 pte_t ptent; d850fa72987378 Hugh Dickins 2023-06-08 2357 d850fa72987378 Hugh Dickins 2023-06-08 2358 if (!pte++) { d850fa72987378 Hugh Dickins 2023-06-08 2359 pte = pte_offset_map(pmd, addr); d850fa72987378 Hugh Dickins 2023-06-08 2360 if (!pte) d850fa72987378 Hugh Dickins 2023-06-08 2361 break; d850fa72987378 Hugh Dickins 2023-06-08 2362 } f102cd8b173e06 Matthew Wilcox (Oracle 2022-09-02 2363) c33c794828f212 Ryan Roberts 2023-06-12 2364 ptent = ptep_get_lockless(pte); 06fb61462bdea3 Lorenzo Stoakes 2025-11-10 2365 entry = softleaf_from_pte(ptent); f102cd8b173e06 Matthew Wilcox (Oracle 2022-09-02 2366) 06fb61462bdea3 Lorenzo Stoakes 2025-11-10 2367 if (!softleaf_is_swap(entry)) b56a2d8af9147a Vineeth Remanan Pillai 2019-03-05 2368 continue; b56a2d8af9147a Vineeth Remanan Pillai 2019-03-05 2369 if (swp_type(entry) != type) b56a2d8af9147a Vineeth Remanan Pillai 2019-03-05 2370 continue; b56a2d8af9147a Vineeth Remanan Pillai 2019-03-05 2371 b56a2d8af9147a Vineeth Remanan Pillai 2019-03-05 2372 offset = swp_offset(entry); 044d66c1d2b1c5 Hugh Dickins 2008-02-07 2373 pte_unmap(pte); d850fa72987378 Hugh Dickins 2023-06-08 2374 pte = NULL; d850fa72987378 Hugh Dickins 2023-06-08 2375 f28124617f3415 Kairui Song 2025-09-17 2376 folio = swap_cache_get_folio(entry); f102cd8b173e06 Matthew Wilcox (Oracle 2022-09-02 2377) if (!folio) { 8c63ca5bc3e19f Will Deacon 2021-01-14 2378 struct vm_fault vmf = { 8c63ca5bc3e19f Will Deacon 2021-01-14 2379 .vma = vma, 8c63ca5bc3e19f Will Deacon 2021-01-14 2380 .address = addr, 824ddc601adc2c Nadav Amit 2022-03-22 2381 .real_address = addr, 8c63ca5bc3e19f Will Deacon 2021-01-14 2382 .pmd = pmd, 8c63ca5bc3e19f Will Deacon 2021-01-14 2383 }; 8c63ca5bc3e19f Will Deacon 2021-01-14 2384 94dc8bffd8b7fe Matthew Wilcox (Oracle 2024-08-07 2385) folio = swapin_readahead(entry, GFP_HIGHUSER_MOVABLE, ebc5951eea4993 Andrea Righi 2020-06-01 2386 &vmf); ebc5951eea4993 Andrea Righi 2020-06-01 2387 } f102cd8b173e06 Matthew Wilcox (Oracle 2022-09-02 2388) if (!folio) { 0177fe675b3916 Kairui Song 2026-01-26 2389 swp_tb = swap_table_get(__swap_entry_to_cluster(entry), 0177fe675b3916 Kairui Song 2026-01-26 2390 swp_cluster_offset(entry)); 0177fe675b3916 Kairui Song 2026-01-26 2391 swp_count = swp_tb_get_count(swp_tb); 0177fe675b3916 Kairui Song 2026-01-26 2392 if (swp_count <= 0) d850fa72987378 Hugh Dickins 2023-06-08 2393 continue; b56a2d8af9147a Vineeth Remanan Pillai 2019-03-05 2394 return -ENOMEM; b56a2d8af9147a Vineeth Remanan Pillai 2019-03-05 2395 } b56a2d8af9147a Vineeth Remanan Pillai 2019-03-05 2396 f102cd8b173e06 Matthew Wilcox (Oracle 2022-09-02 2397) folio_lock(folio); f102cd8b173e06 Matthew Wilcox (Oracle 2022-09-02 2398) folio_wait_writeback(folio); f102cd8b173e06 Matthew Wilcox (Oracle 2022-09-02 2399) ret = unuse_pte(vma, pmd, addr, entry, folio); b56a2d8af9147a Vineeth Remanan Pillai 2019-03-05 2400 if (ret < 0) { f102cd8b173e06 Matthew Wilcox (Oracle 2022-09-02 2401) folio_unlock(folio); f102cd8b173e06 Matthew Wilcox (Oracle 2022-09-02 2402) folio_put(folio); d850fa72987378 Hugh Dickins 2023-06-08 2403 return ret; ^1da177e4c3f41 Linus Torvalds 2005-04-16 2404 } b56a2d8af9147a Vineeth Remanan Pillai 2019-03-05 2405 f102cd8b173e06 Matthew Wilcox (Oracle 2022-09-02 2406) folio_free_swap(folio); f102cd8b173e06 Matthew Wilcox (Oracle 2022-09-02 2407) folio_unlock(folio); f102cd8b173e06 Matthew Wilcox (Oracle 2022-09-02 2408) folio_put(folio); d850fa72987378 Hugh Dickins 2023-06-08 2409 } while (addr += PAGE_SIZE, addr != end); b56a2d8af9147a Vineeth Remanan Pillai 2019-03-05 2410 d850fa72987378 Hugh Dickins 2023-06-08 2411 if (pte) d850fa72987378 Hugh Dickins 2023-06-08 2412 pte_unmap(pte); d850fa72987378 Hugh Dickins 2023-06-08 2413 return 0; ^1da177e4c3f41 Linus Torvalds 2005-04-16 2414 } ^1da177e4c3f41 Linus Torvalds 2005-04-16 2415 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki