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Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko Subject: Re: [PATCH 01/15] mm: various small mmap_prepare cleanups Message-ID: <202603130825.eFqVjdWW-lkp@intel.com> References: <56372fe273f775b26675a04652c1229e14680741.1773346620.git.ljs@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <56372fe273f775b26675a04652c1229e14680741.1773346620.git.ljs@kernel.org> X-Rspam-User: X-Rspamd-Queue-Id: 5676B180011 X-Rspamd-Server: rspam08 X-Stat-Signature: gkuh4wtm816xijwui8imnq6urj4da76n X-HE-Tag: 1773388879-26092 X-HE-Meta: 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 IQu8LU9k LjULBMcaDTEJBfPKZssgx/XTCbA== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hi Lorenzo, kernel test robot noticed the following build warnings: [auto build test WARNING on next-20260311] [cannot apply to akpm-mm/mm-everything char-misc/char-misc-testing char-misc/char-misc-next char-misc/char-misc-linus brauner-vfs/vfs.all linus/master v7.0-rc3 v7.0-rc2 v7.0-rc1 v6.16-rc1] [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/Lorenzo-Stoakes-Oracle/mm-various-small-mmap_prepare-cleanups/20260313-113314 base: next-20260311 patch link: https://lore.kernel.org/r/56372fe273f775b26675a04652c1229e14680741.1773346620.git.ljs%40kernel.org patch subject: [PATCH 01/15] mm: various small mmap_prepare cleanups config: x86_64-rhel-9.4 (https://download.01.org/0day-ci/archive/20260313/202603130825.eFqVjdWW-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/20260313/202603130825.eFqVjdWW-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/202603130825.eFqVjdWW-lkp@intel.com/ All warnings (new ones prefixed by >>): mm/util.c: In function 'mmap_action_prepare': >> mm/util.c:1360:1: warning: control reaches end of non-void function [-Wreturn-type] 1360 | } | ^ vim +1360 mm/util.c ac0a3fc9c07df7 Lorenzo Stoakes 2025-10-20 1338 ac0a3fc9c07df7 Lorenzo Stoakes 2025-10-20 1339 #ifdef CONFIG_MMU ac0a3fc9c07df7 Lorenzo Stoakes 2025-10-20 1340 /** ac0a3fc9c07df7 Lorenzo Stoakes 2025-10-20 1341 * mmap_action_prepare - Perform preparatory setup for an VMA descriptor ac0a3fc9c07df7 Lorenzo Stoakes 2025-10-20 1342 * action which need to be performed. ac0a3fc9c07df7 Lorenzo Stoakes 2025-10-20 1343 * @desc: The VMA descriptor to prepare for @action. ac0a3fc9c07df7 Lorenzo Stoakes 2025-10-20 1344 * @action: The action to perform. 732e4e2690c96d Lorenzo Stoakes (Oracle 2026-03-12 1345) * 732e4e2690c96d Lorenzo Stoakes (Oracle 2026-03-12 1346) * Returns: 0 on success, otherwise error. ac0a3fc9c07df7 Lorenzo Stoakes 2025-10-20 1347 */ 732e4e2690c96d Lorenzo Stoakes (Oracle 2026-03-12 1348) int mmap_action_prepare(struct vm_area_desc *desc, 732e4e2690c96d Lorenzo Stoakes (Oracle 2026-03-12 1349) struct mmap_action *action) 732e4e2690c96d Lorenzo Stoakes (Oracle 2026-03-12 1350) ac0a3fc9c07df7 Lorenzo Stoakes 2025-10-20 1351 { ac0a3fc9c07df7 Lorenzo Stoakes 2025-10-20 1352 switch (action->type) { ac0a3fc9c07df7 Lorenzo Stoakes 2025-10-20 1353 case MMAP_NOTHING: 732e4e2690c96d Lorenzo Stoakes (Oracle 2026-03-12 1354) return 0; ac0a3fc9c07df7 Lorenzo Stoakes 2025-10-20 1355 case MMAP_REMAP_PFN: 732e4e2690c96d Lorenzo Stoakes (Oracle 2026-03-12 1356) return remap_pfn_range_prepare(desc, action); ac0a3fc9c07df7 Lorenzo Stoakes 2025-10-20 1357 case MMAP_IO_REMAP_PFN: 732e4e2690c96d Lorenzo Stoakes (Oracle 2026-03-12 1358) return io_remap_pfn_range_prepare(desc, action); ac0a3fc9c07df7 Lorenzo Stoakes 2025-10-20 1359 } ac0a3fc9c07df7 Lorenzo Stoakes 2025-10-20 @1360 } ac0a3fc9c07df7 Lorenzo Stoakes 2025-10-20 1361 EXPORT_SYMBOL(mmap_action_prepare); ac0a3fc9c07df7 Lorenzo Stoakes 2025-10-20 1362 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki