Hi Ming, [auto build test ERROR on block/for-next] [also build test ERROR on v4.6-rc2 next-20160401] [if your patch is applied to the wrong git tree, please drop us a note to help improving the system] url: https://github.com/0day-ci/linux/commits/Ming-Lei/block-prepare-for-multipage-bvecs/20160404-003648 base: https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git for-next config: arm-at91_dt_defconfig (attached as .config) reproduce: wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree make.cross ARCH=arm All errors (new ones prefixed by >>): In file included from include/linux/blk_types.h:9:0, from arch/arm/include/asm/io.h:28, from drivers/input/joydev.c:15: include/linux/bvec.h: In function 'bvec_iter_advance': >> include/linux/bvec.h:69:2: error: implicit declaration of function 'WARN_ONCE' [-Werror=implicit-function-declaration] WARN_ONCE(bytes > iter->bi_size, ^ >> include/linux/bvec.h:73:3: error: implicit declaration of function 'min' [-Werror=implicit-function-declaration] unsigned len = min(bytes, bvec_iter_len(bv, *iter)); ^ cc1: some warnings being treated as errors vim +/WARN_ONCE +69 include/linux/bvec.h 0d61ba15 Ming Lei 2016-04-04 63 .bv_offset = bvec_iter_offset((bvec), (iter)), \ 0d61ba15 Ming Lei 2016-04-04 64 }) 0d61ba15 Ming Lei 2016-04-04 65 0d61ba15 Ming Lei 2016-04-04 66 static inline void bvec_iter_advance(struct bio_vec *bv, struct bvec_iter *iter, 0d61ba15 Ming Lei 2016-04-04 67 unsigned bytes) 0d61ba15 Ming Lei 2016-04-04 68 { 0d61ba15 Ming Lei 2016-04-04 @69 WARN_ONCE(bytes > iter->bi_size, 0d61ba15 Ming Lei 2016-04-04 70 "Attempted to advance past end of bvec iter\n"); 0d61ba15 Ming Lei 2016-04-04 71 0d61ba15 Ming Lei 2016-04-04 72 while (bytes) { 0d61ba15 Ming Lei 2016-04-04 @73 unsigned len = min(bytes, bvec_iter_len(bv, *iter)); 0d61ba15 Ming Lei 2016-04-04 74 0d61ba15 Ming Lei 2016-04-04 75 bytes -= len; 0d61ba15 Ming Lei 2016-04-04 76 iter->bi_size -= len; :::::: The code at line 69 was first introduced by commit :::::: 0d61ba15b7eb4a7478dae53947aaaf898a1bbf30 block: move bvec iterator into include/linux/bvec.h :::::: TO: Ming Lei <ming.lei@xxxxxxxxxxxxx> :::::: CC: 0day robot <fengguang.wu@xxxxxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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