tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: 098a595b2caf96f57cda68f082b4dc0019d7814d commit: 44983705e56ab22fda801d66e2a6bd0d1be7ca0b [1327/1327] etmem: add original kernel swap enabled options config: arm64-allnoconfig (https://download.01.org/0day-ci/archive/20241216/202412161514.E1aRqHqY-lkp@i...) compiler: aarch64-linux-gcc (GCC) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241216/202412161514.E1aRqHqY-lkp@i...)

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/202412161514.E1aRqHqY-lkp@intel.com/

All errors (new ones prefixed by >>):

mm/vmscan.c: In function 'kernel_swap_check':

...

mm/vmscan.c:3257:28: error: implicit declaration of function 'kernel_swap_enabled'; did you mean 'kernfs_ns_enabled'? [-Werror=implicit-function-declaration]

3257 | if (sc != NULL && !kernel_swap_enabled()) | ^~~~~~~~~~~~~~~~~~~ | kernfs_ns_enabled cc1: some warnings being treated as errors

vim +3257 mm/vmscan.c

3250 3251 /* 3252 * Check if original kernel swap is enabled 3253 * turn off kernel swap,but leave page cache reclaim on 3254 */ 3255 static inline void kernel_swap_check(struct scan_control *sc) 3256 {

3257 if (sc != NULL && !kernel_swap_enabled())

3258 sc->may_swap = 0; 3259 } 3260