Hi Dan, I love your patch! Yet something to improve: [auto build test ERROR on linus/master] [also build test ERROR on v4.17-rc7 next-20180530] [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/mm-Teach-memory_failure-about-ZONE_DEVICE-pages/20180525-035652 config: arm64-allmodconfig (attached as .config) compiler: aarch64-linux-gnu-gcc (Debian 7.2.0-11) 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=arm64 All errors (new ones prefixed by >>): drivers//dax/device.c: In function 'dev_dax_huge_fault': >> drivers//dax/device.c:413:8: error: too many arguments to function '__dev_dax_pud_fault' rc = __dev_dax_pud_fault(dev_dax, vmf, &pfn); ^~~~~~~~~~~~~~~~~~~ drivers//dax/device.c:380:19: note: declared here static vm_fault_t __dev_dax_pud_fault(struct dev_dax *dev_dax, ^~~~~~~~~~~~~~~~~~~ vim +/__dev_dax_pud_fault +413 drivers//dax/device.c 386 387 static vm_fault_t dev_dax_huge_fault(struct vm_fault *vmf, 388 enum page_entry_size pe_size) 389 { 390 struct vm_area_struct *vma = vmf->vma; 391 struct file *filp = vma->vm_file; 392 unsigned long fault_size; 393 int rc, id; 394 pfn_t pfn; 395 struct dev_dax *dev_dax = filp->private_data; 396 397 dev_dbg(&dev_dax->dev, "%s: %s (%#lx - %#lx) size = %d\n", current->comm, 398 (vmf->flags & FAULT_FLAG_WRITE) ? "write" : "read", 399 vma->vm_start, vma->vm_end, pe_size); 400 401 id = dax_read_lock(); 402 switch (pe_size) { 403 case PE_SIZE_PTE: 404 fault_size = PAGE_SIZE; 405 rc = __dev_dax_pte_fault(dev_dax, vmf, &pfn); 406 break; 407 case PE_SIZE_PMD: 408 fault_size = PMD_SIZE; 409 rc = __dev_dax_pmd_fault(dev_dax, vmf, &pfn); 410 break; 411 case PE_SIZE_PUD: 412 fault_size = PUD_SIZE; > 413 rc = __dev_dax_pud_fault(dev_dax, vmf, &pfn); 414 break; 415 default: 416 rc = VM_FAULT_SIGBUS; 417 } 418 419 if (rc == VM_FAULT_NOPAGE) { 420 unsigned long i; 421 422 for (i = 0; i < fault_size / PAGE_SIZE; i++) { 423 struct page *page; 424 425 page = pfn_to_page(pfn_t_to_pfn(pfn) + i); 426 if (page->mapping) 427 continue; 428 page->mapping = filp->f_mapping; 429 } 430 } 431 dax_read_unlock(id); 432 433 return rc; 434 } 435 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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