Re: [PATCH 2/2] mm: introduce vma_set_file function v4

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Hi "Christian,

I love your patch! Yet something to improve:

[auto build test ERROR on drm-intel/for-linux-next]
[also build test ERROR on staging/staging-testing linus/master v5.9 next-20201012]
[cannot apply to mmotm/master]
[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]

url:    https://github.com/0day-ci/linux/commits/Christian-K-nig/mm-mmap-fix-fput-in-error-path-v2/20201012-165336
base:   git://anongit.freedesktop.org/drm-intel for-linux-next
config: arm-randconfig-r034-20201012 (attached as .config)
compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/0day-ci/linux/commit/4ff869f185acba6d9c37ab6abdb0d9f93f31d15b
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Christian-K-nig/mm-mmap-fix-fput-in-error-path-v2/20201012-165336
        git checkout 4ff869f185acba6d9c37ab6abdb0d9f93f31d15b
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All errors (new ones prefixed by >>):

   arm-linux-gnueabi-ld: drivers/gpu/drm/vgem/vgem_drv.o: in function `vgem_prime_mmap':
>> drivers/gpu/drm/vgem/vgem_drv.c:396: undefined reference to `vma_set_file'
   arm-linux-gnueabi-ld: drivers/dma-buf/dma-buf.o: in function `dma_buf_mmap':
>> drivers/dma-buf/dma-buf.c:1163: undefined reference to `vma_set_file'

vim +396 drivers/gpu/drm/vgem/vgem_drv.c

   380	
   381	static int vgem_prime_mmap(struct drm_gem_object *obj,
   382				   struct vm_area_struct *vma)
   383	{
   384		int ret;
   385	
   386		if (obj->size < vma->vm_end - vma->vm_start)
   387			return -EINVAL;
   388	
   389		if (!obj->filp)
   390			return -ENODEV;
   391	
   392		ret = call_mmap(obj->filp, vma);
   393		if (ret)
   394			return ret;
   395	
 > 396		vma_set_file(vma, obj->filp);
   397		vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
   398		vma->vm_page_prot = pgprot_writecombine(vm_get_page_prot(vma->vm_flags));
   399	
   400		return 0;
   401	}
   402	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx

Attachment: .config.gz
Description: application/gzip

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