Hi Matthew, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on linus/master] [cannot apply to v5.3-rc5 next-20190823] [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/Matthew-Wilcox/iomap-xfs-support-for-large-pages/20190823-191138 config: x86_64-randconfig-f001-201933 (attached as .config) compiler: gcc-7 (Debian 7.4.0-10) 7.4.0 reproduce: # save the attached .config to linux build tree make ARCH=x86_64 If you fix the issue, kindly add following tag Reported-by: kbuild test robot All warnings (new ones prefixed by >>): In file included from arch/x86/include/asm/pgalloc.h:7:0, from include/asm-generic/tlb.h:16, from arch/x86/include/asm/tlb.h:12, from arch/x86/include/asm/efi.h:8, from drivers/firmware/efi/libstub/tpm.c:12: include/linux/pagemap.h: In function 'file_offset_of_next_page': >> include/linux/pagemap.h:445:32: warning: implicit declaration of function 'compound_nr'; did you mean 'compound_order'? [-Wimplicit-function-declaration] return ((loff_t)page->index + compound_nr(page)) << PAGE_SHIFT; ^~~~~~~~~~~ compound_order include/linux/pagemap.h: In function 'i_blocks_per_page': include/linux/pagemap.h:659:9: warning: implicit declaration of function 'page_size'; did you mean 'page_zone'? [-Wimplicit-function-declaration] return page_size(page) >> inode->i_blkbits; ^~~~~~~~~ page_zone vim +445 include/linux/pagemap.h 435 436 /** 437 * file_offset_of_next_page - File offset of the next page. 438 * @page: Page cache page. 439 * 440 * Context: Any context. 441 * Return: The offset of the first byte after this page. 442 */ 443 static inline loff_t file_offset_of_next_page(struct page *page) 444 { > 445 return ((loff_t)page->index + compound_nr(page)) << PAGE_SHIFT; 446 } 447 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation