Hi Dan, I love your patch! Yet something to improve: [auto build test ERROR on linus/master] [also build test ERROR on v4.16-rc5 next-20180316] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Dan-Williams/dax-fix-dma-vs-truncate-hole-punch/20180318-050250 config: xtensa-allmodconfig (attached as .config) compiler: xtensa-linux-gcc (GCC) 7.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree make.cross ARCH=xtensa All error/warnings (new ones prefixed by >>): fs/dax.c: In function 'dax_entry_size': >> fs/dax.c:308:10: error: 'HPAGE_SIZE' undeclared (first use in this function); did you mean 'PAGE_SIZE'? return HPAGE_SIZE; ^~~~~~~~~~ PAGE_SIZE fs/dax.c:308:10: note: each undeclared identifier is reported only once for each function it appears in >> fs/dax.c:311:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ vim +308 fs/dax.c 300 301 static unsigned long dax_entry_size(void *entry) 302 { 303 if (dax_is_zero_entry(entry)) 304 return 0; 305 else if (dax_is_empty_entry(entry)) 306 return 0; 307 else if (dax_is_pmd_entry(entry)) > 308 return HPAGE_SIZE; 309 else 310 return PAGE_SIZE; > 311 } 312 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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