Re: [PATCH] mm: cma: sync everything after EBUSY

[kernel test robot <lkp@intel.com>]

Hi Edward,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on akpm-mm/mm-everything]

url:    https://github.com/intel-lab-lkp/linux/commits/Edward-Wu/mm-cma-sync-everything-after-EBUSY/20220615-101716
base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
config: x86_64-randconfig-s022 (https://download.01.org/0day-ci/archive/20220621/202206211055.X7Tcbmrt-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.3.0-3) 11.3.0
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.4-30-g92122700-dirty
        # https://github.com/intel-lab-lkp/linux/commit/ef04552ed13eb371365fcc55c7ae1e5c3c211168
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Edward-Wu/mm-cma-sync-everything-after-EBUSY/20220615-101716
        git checkout ef04552ed13eb371365fcc55c7ae1e5c3c211168
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=x86_64 SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@intel.com>


sparse warnings: (new ones prefixed by >>)
>> mm/cma.c:415:6: sparse: sparse: symbol 'cma_sync_work' was not declared. Should it be static?
>> mm/cma.c:422:6: sparse: sparse: symbol 'cma_ebusy_sync_pinned_pages' was not declared. Should it be static?

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