Messages in this thread | | | Date | Tue, 31 May 2022 04:38:37 +0800 | From | kernel test robot <> | Subject | [ammarfaizi2-block:dhowells/linux-fs/cifs-netfs 40/41] fs/netfs/io.c:596:15: warning: variable 'ix' set but not used |
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tree: https://github.com/ammarfaizi2/linux-block dhowells/linux-fs/cifs-netfs head: 1fc71b6b30f6d2a981c163b77c9aee0aecaecb29 commit: 4efb4efb053eca8b1e75a9242112e8e159baab68 [40/41] fixes config: x86_64-randconfig-a011-20220530 (https://download.01.org/0day-ci/archive/20220531/202205310415.IRC0glkJ-lkp@intel.com/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 0776c48f9b7e69fa447bee57c7c0985caa856be9) 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/ammarfaizi2/linux-block/commit/4efb4efb053eca8b1e75a9242112e8e159baab68 git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block git fetch --no-tags ammarfaizi2-block dhowells/linux-fs/cifs-netfs git checkout 4efb4efb053eca8b1e75a9242112e8e159baab68 # 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=x86_64 SHELL=/bin/bash fs/netfs/
If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
>> fs/netfs/io.c:596:15: warning: variable 'ix' set but not used [-Wunused-but-set-variable] unsigned int ix = 0, nsegs = 0; ^ 1 warning generated.
vim +/ix +596 fs/netfs/io.c
586 587 /* 588 * Select the span of an xarray iterator we're going to use. Limit it by both 589 * maximum size and maximum number of segments. It is assumed that segments 590 * can be larger than a page in size, provided they're physically contiguous. 591 */ 592 static size_t netfs_limit_xarray(struct iov_iter *iter, size_t start_offset, 593 size_t max_size, size_t max_segs) 594 { 595 struct folio *folio; > 596 unsigned int ix = 0, nsegs = 0; 597 loff_t pos = iter->xarray_start + iter->iov_offset; 598 pgoff_t index = pos / PAGE_SIZE; 599 size_t span = 0, n = iter->count; 600 601 XA_STATE(xas, iter->xarray, index); 602 603 if (WARN_ON(!iov_iter_is_xarray(iter)) || 604 WARN_ON(start_offset > n) || 605 n == 0) 606 return 0; 607 max_size = min(max_size, n - start_offset); 608 609 rcu_read_lock(); 610 xas_for_each(&xas, folio, ULONG_MAX) { 611 size_t offset, flen, len; 612 if (xas_retry(&xas, folio)) 613 continue; 614 if (WARN_ON(xa_is_value(folio))) 615 break; 616 if (WARN_ON(folio_test_hugetlb(folio))) 617 break; 618 619 flen = folio_size(folio); 620 offset = offset_in_folio(folio, pos); 621 len = min(max_size, flen - offset); 622 span += len; 623 nsegs++; 624 ix++; 625 if (span >= max_size || nsegs >= max_segs) 626 break; 627 } 628 629 rcu_read_unlock(); 630 return min(span, max_size); 631 } 632
-- 0-DAY CI Kernel Test Service https://01.org/lkp
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