Hi Nitesh, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on next-20220422] [cannot apply to axboe-block/for-next device-mapper-dm/for-next linus/master v5.18-rc4 v5.18-rc3 v5.18-rc2 v5.18-rc4] [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/intel-lab-lkp/linux/commits/Nitesh-Shetty/block-Introduce-queue-limits-for-copy-offload-support/20220426-201825 base: e7d6987e09a328d4a949701db40ef63fbb970670 config: hexagon-randconfig-r041-20220425 (https://download.01.org/0day-ci/archive/20220427/202204270913.Ecb3uQx1-lkp@xxxxxxxxx/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 1cddcfdc3c683b393df1a5c9063252eb60e52818) 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 # https://github.com/intel-lab-lkp/linux/commit/c406c5145dc7d628d4197f6726c23a3f1179b88e git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Nitesh-Shetty/block-Introduce-queue-limits-for-copy-offload-support/20220426-201825 git checkout c406c5145dc7d628d4197f6726c23a3f1179b88e # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): block/blk-lib.c:178:5: warning: no previous prototype for function 'blk_copy_offload' [-Wmissing-prototypes] int blk_copy_offload(struct block_device *src_bdev, int nr_srcs, ^ block/blk-lib.c:178:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int blk_copy_offload(struct block_device *src_bdev, int nr_srcs, ^ static >> block/blk-lib.c:276:5: warning: no previous prototype for function 'blk_submit_rw_buf' [-Wmissing-prototypes] int blk_submit_rw_buf(struct block_device *bdev, void *buf, sector_t buf_len, ^ block/blk-lib.c:276:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int blk_submit_rw_buf(struct block_device *bdev, void *buf, sector_t buf_len, ^ static 2 warnings generated. vim +/blk_submit_rw_buf +276 block/blk-lib.c 275 > 276 int blk_submit_rw_buf(struct block_device *bdev, void *buf, sector_t buf_len, 277 sector_t sector, unsigned int op, gfp_t gfp_mask) 278 { 279 struct request_queue *q = bdev_get_queue(bdev); 280 struct bio *bio, *parent = NULL; 281 sector_t max_hw_len = min_t(unsigned int, queue_max_hw_sectors(q), 282 queue_max_segments(q) << (PAGE_SHIFT - SECTOR_SHIFT)) << SECTOR_SHIFT; 283 sector_t len, remaining; 284 int ret; 285 286 for (remaining = buf_len; remaining > 0; remaining -= len) { 287 len = min_t(int, max_hw_len, remaining); 288 retry: 289 bio = bio_map_kern(q, buf, len, gfp_mask); 290 if (IS_ERR(bio)) { 291 len >>= 1; 292 if (len) 293 goto retry; 294 return PTR_ERR(bio); 295 } 296 297 bio->bi_iter.bi_sector = sector >> SECTOR_SHIFT; 298 bio->bi_opf = op; 299 bio_set_dev(bio, bdev); 300 bio->bi_end_io = NULL; 301 bio->bi_private = NULL; 302 303 if (parent) { 304 bio_chain(parent, bio); 305 submit_bio(parent); 306 } 307 parent = bio; 308 sector += len; 309 buf = (char *) buf + len; 310 } 311 ret = submit_bio_wait(bio); 312 bio_put(bio); 313 314 return ret; 315 } 316 -- 0-DAY CI Kernel Test Service https://01.org/lkp
