tree: git://git.samba.org/sfrench/cifs-2.6.git for-next head: 2259206443e31ea6a266adcf0d900fbea17016ec commit: d1df0021a8275ef2e0d455b384e78e18e57cf9f2 [20/25] netfs: Add a function to extract a UBUF or IOVEC into a BVEC iterator config: arm-buildonly-randconfig-r005-20230213 (https://download.01.org/0day-ci/archive/20230213/202302130853.kU76MQRK-lkp@xxxxxxxxx/config) compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project db0e6591612b53910a1b366863348bdb9d7d2fb1) 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 # install arm cross compiling tool for clang build # apt-get install binutils-arm-linux-gnueabi git remote add cifs git://git.samba.org/sfrench/cifs-2.6.git git fetch --no-tags cifs for-next git checkout d1df0021a8275ef2e0d455b384e78e18e57cf9f2 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash fs/netfs/ If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Link: https://lore.kernel.org/oe-kbuild-all/202302130853.kU76MQRK-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): In file included from fs/netfs/iterator.c:11: include/linux/netfs.h:302:5: error: unknown type name 'iov_iter_extraction_t' iov_iter_extraction_t extraction_flags); ^ fs/netfs/iterator.c:36:5: error: unknown type name 'iov_iter_extraction_t' iov_iter_extraction_t extraction_flags) ^ >> fs/netfs/iterator.c:65:9: error: call to undeclared function 'iov_iter_extract_pages'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] ret = iov_iter_extract_pages(orig, &pages, count, ^ fs/netfs/iterator.c:65:9: note: did you mean 'iov_iter_get_pages'? include/linux/uio.h:253:9: note: 'iov_iter_get_pages' declared here ssize_t iov_iter_get_pages(struct iov_iter *i, struct page **pages, ^ 3 errors generated. vim +/iov_iter_extract_pages +65 fs/netfs/iterator.c 13 14 /** 15 * netfs_extract_user_iter - Extract the pages from a user iterator into a bvec 16 * @orig: The original iterator 17 * @orig_len: The amount of iterator to copy 18 * @new: The iterator to be set up 19 * @extraction_flags: Flags to qualify the request 20 * 21 * Extract the page fragments from the given amount of the source iterator and 22 * build up a second iterator that refers to all of those bits. This allows 23 * the original iterator to disposed of. 24 * 25 * @extraction_flags can have ITER_ALLOW_P2PDMA set to request peer-to-peer DMA be 26 * allowed on the pages extracted. 27 * 28 * On success, the number of elements in the bvec is returned, the original 29 * iterator will have been advanced by the amount extracted. 30 * 31 * The iov_iter_extract_mode() function should be used to query how cleanup 32 * should be performed. 33 */ 34 ssize_t netfs_extract_user_iter(struct iov_iter *orig, size_t orig_len, 35 struct iov_iter *new, 36 iov_iter_extraction_t extraction_flags) 37 { 38 struct bio_vec *bv = NULL; 39 struct page **pages; 40 unsigned int cur_npages; 41 unsigned int max_pages; 42 unsigned int npages = 0; 43 unsigned int i; 44 ssize_t ret; 45 size_t count = orig_len, offset, len; 46 size_t bv_size, pg_size; 47 48 if (WARN_ON_ONCE(!iter_is_ubuf(orig) && !iter_is_iovec(orig))) 49 return -EIO; 50 51 max_pages = iov_iter_npages(orig, INT_MAX); 52 bv_size = array_size(max_pages, sizeof(*bv)); 53 bv = kvmalloc(bv_size, GFP_KERNEL); 54 if (!bv) 55 return -ENOMEM; 56 57 /* Put the page list at the end of the bvec list storage. bvec 58 * elements are larger than page pointers, so as long as we work 59 * 0->last, we should be fine. 60 */ 61 pg_size = array_size(max_pages, sizeof(*pages)); 62 pages = (void *)bv + bv_size - pg_size; 63 64 while (count && npages < max_pages) { > 65 ret = iov_iter_extract_pages(orig, &pages, count, -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests
