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Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Zi Yan , linux-kernel@vger.kernel.org Cc: oe-kbuild-all@lists.linux.dev, Linux Memory Management List , tjmercier@google.com, isaacmanjarres@google.com, kaleshsingh@google.com, Minchan Kim Subject: Re: [PATCH v5] mm: Add CONFIG_PAGE_BLOCK_ORDER to select page block order Message-ID: <202505181825.FdKgAQ16-lkp@intel.com> References: <20250516232341.659513-1-jyescas@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250516232341.659513-1-jyescas@google.com> X-Rspam-User: X-Rspamd-Queue-Id: A67CF1A000E X-Rspamd-Server: rspam09 X-Stat-Signature: 8kotytjkt7b8e6ysabwoyxyryzwfi8m7 X-HE-Tag: 1747566387-868953 X-HE-Meta: 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 joToVBio qpQHr1e4E6lfaZhA+o6393fYncgYGW0/LmeI4Z9/62quzci4aapx8ZDYtQBGQQpQG8TfhZAG1Lpclrld77hf+L+G4V6UIgMYdh8V5mDsNx6wdAdkGDvgJpdZDlOgk2lpfb3wxLy0cXfConOf5LLEEYVxyvhZEoS1zO+5uSgyFMc9ZfRr5C+No9AZ52CuYGQOb/sFRecM/xGoW3QFZi6gp5UVDakXCYK6L0DWral5BmUpHKIYLVdnE5vp/tlXg+iGEEjW17xkawv/mu11cVLPhbxxM6ZgH+KUNXsFerio8M0CA9N1vujWYlq2vEdWbJfNvONlBm1gll9+lj7gDOjfuBUier+Ht/3lKZNFUghQ02lSRt2k/7IIEiaraIWojcPeGbmAuTbaxwaL9+qu9stxnVUxhiw== 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 Juan, kernel test robot noticed the following build warnings: [auto build test WARNING on akpm-mm/mm-everything] url: https://github.com/intel-lab-lkp/linux/commits/Juan-Yescas/mm-Add-CONFIG_PAGE_BLOCK_ORDER-to-select-page-block-order/20250517-072434 base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything patch link: https://lore.kernel.org/r/20250516232341.659513-1-jyescas%40google.com patch subject: [PATCH v5] mm: Add CONFIG_PAGE_BLOCK_ORDER to select page block order config: i386-randconfig-r072-20250518 (https://download.01.org/0day-ci/archive/20250518/202505181825.FdKgAQ16-lkp@intel.com/config) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 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/202505181825.FdKgAQ16-lkp@intel.com/ smatch warnings: mm/compaction.c:302 pageblock_skip_persistent() warn: always true condition '(compound_order(page) >= (((((22 - 12))) < ((0))) ?(((22 - 12))):((0)))) => (0-u32max >= 0)' mm/page_alloc.c:618 compaction_capture() warn: unsigned 'order' is never less than zero. vim +302 mm/compaction.c 9721fd82351d47a Baolin Wang 2023-06-14 289 21dc7e023611fbc David Rientjes 2017-11-17 290 /* 2271b016bf368d1 Hui Su 2020-12-14 291 * Compound pages of >= pageblock_order should consistently be skipped until b527cfe5bc23208 Vlastimil Babka 2017-11-17 292 * released. It is always pointless to compact pages of such order (if they are b527cfe5bc23208 Vlastimil Babka 2017-11-17 293 * migratable), and the pageblocks they occupy cannot contain any free pages. 21dc7e023611fbc David Rientjes 2017-11-17 294 */ b527cfe5bc23208 Vlastimil Babka 2017-11-17 295 static bool pageblock_skip_persistent(struct page *page) 21dc7e023611fbc David Rientjes 2017-11-17 296 { b527cfe5bc23208 Vlastimil Babka 2017-11-17 297 if (!PageCompound(page)) 21dc7e023611fbc David Rientjes 2017-11-17 298 return false; b527cfe5bc23208 Vlastimil Babka 2017-11-17 299 b527cfe5bc23208 Vlastimil Babka 2017-11-17 300 page = compound_head(page); b527cfe5bc23208 Vlastimil Babka 2017-11-17 301 b527cfe5bc23208 Vlastimil Babka 2017-11-17 @302 if (compound_order(page) >= pageblock_order) 21dc7e023611fbc David Rientjes 2017-11-17 303 return true; b527cfe5bc23208 Vlastimil Babka 2017-11-17 304 b527cfe5bc23208 Vlastimil Babka 2017-11-17 305 return false; 21dc7e023611fbc David Rientjes 2017-11-17 306 } 21dc7e023611fbc David Rientjes 2017-11-17 307 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki