4:20 p.m.
Hi Peter,
Thank you for the patch! Yet something to improve:
[auto build test ERROR on linus/master]
[also build test ERROR on v5.14-rc1 next-20210714]
[cannot apply to hnaz-linux-mm/master asm-generic/master linux/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/Peter-Xu/userfaultfd-wp-Support-...
base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
8096acd7442e613fad0354fc8dfdb2003cceea0b
config: x86_64-randconfig-r021-20210714 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project
0e49c54a8cbd3e779e5526a5888c683c01cc3c50)
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
# install x86_64 cross compiling tool for clang build
# apt-get install binutils-x86-64-linux-gnu
#
https://github.com/0day-ci/linux/commit/8b3e70f40b8333a803e642ed5c8cce738...
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review
Peter-Xu/userfaultfd-wp-Support-shmem-and-hugetlbfs/20210715-062718
git checkout 8b3e70f40b8333a803e642ed5c8cce738985881c
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp(a)intel.com>
All errors (new ones prefixed by >>):
> mm/memory.c:4167:6: error: implicit declaration of function
'uffd_disable_fault_around' [-Werror,-Wimplicit-function-declaration]
if (uffd_disable_fault_around(vmf->vma))
^
1 error generated.
vim +/uffd_disable_fault_around +4167 mm/memory.c
4159
4160 /* Return true if we should do read fault-around, false otherwise */
4161 static inline bool should_fault_around(struct vm_fault *vmf)
4162 {
4163 /* No ->map_pages? No way to fault around... */
4164 if (!vmf->vma->vm_ops->map_pages)
4165 return false;
4166
4167 if (uffd_disable_fault_around(vmf->vma))
4168 return false;
4169
4170 return fault_around_bytes >> PAGE_SHIFT > 1;
4171 }
4172
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org