Hi "Vishal, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on linus/master] [also build test WARNING on v6.0-rc1 next-20220815] [cannot apply to kdave/for-next] [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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Vishal-Moola-Oracle/Convert-to-filemap_get_folios_contig/20220816-025830 base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 568035b01cfb107af8d2e4bd2fb9aea22cf5b868 config: x86_64-allyesconfig (https://download.01.org/0day-ci/archive/20220816/202208160738.yErltyXd-lkp@xxxxxxxxx/config) compiler: gcc-11 (Debian 11.3.0-5) 11.3.0 reproduce (this is a W=1 build): # https://github.com/intel-lab-lkp/linux/commit/ce1966344933bbe10010035cd25f23ec7dd76914 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Vishal-Moola-Oracle/Convert-to-filemap_get_folios_contig/20220816-025830 git checkout ce1966344933bbe10010035cd25f23ec7dd76914 # save the config file mkdir build_dir && cp config build_dir/.config make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash fs/nilfs2/ If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): fs/nilfs2/page.c: In function 'nilfs_find_uncommitted_extent': >> fs/nilfs2/page.c:542:1: warning: label 'out' defined but not used [-Wunused-label] 542 | out: | ^~~ vim +/out +542 fs/nilfs2/page.c 622daaff0a8975 Ryusuke Konishi 2010-12-26 466 622daaff0a8975 Ryusuke Konishi 2010-12-26 467 /** 622daaff0a8975 Ryusuke Konishi 2010-12-26 468 * nilfs_find_uncommitted_extent - find extent of uncommitted data 622daaff0a8975 Ryusuke Konishi 2010-12-26 469 * @inode: inode 622daaff0a8975 Ryusuke Konishi 2010-12-26 470 * @start_blk: start block offset (in) 622daaff0a8975 Ryusuke Konishi 2010-12-26 471 * @blkoff: start offset of the found extent (out) 622daaff0a8975 Ryusuke Konishi 2010-12-26 472 * 622daaff0a8975 Ryusuke Konishi 2010-12-26 473 * This function searches an extent of buffers marked "delayed" which 622daaff0a8975 Ryusuke Konishi 2010-12-26 474 * starts from a block offset equal to or larger than @start_blk. If 622daaff0a8975 Ryusuke Konishi 2010-12-26 475 * such an extent was found, this will store the start offset in 622daaff0a8975 Ryusuke Konishi 2010-12-26 476 * @blkoff and return its length in blocks. Otherwise, zero is 622daaff0a8975 Ryusuke Konishi 2010-12-26 477 * returned. 622daaff0a8975 Ryusuke Konishi 2010-12-26 478 */ 622daaff0a8975 Ryusuke Konishi 2010-12-26 479 unsigned long nilfs_find_uncommitted_extent(struct inode *inode, 622daaff0a8975 Ryusuke Konishi 2010-12-26 480 sector_t start_blk, 622daaff0a8975 Ryusuke Konishi 2010-12-26 481 sector_t *blkoff) 622daaff0a8975 Ryusuke Konishi 2010-12-26 482 { ce1966344933bb Vishal Moola (Oracle 2022-08-15 483) unsigned int i, nr; 622daaff0a8975 Ryusuke Konishi 2010-12-26 484 pgoff_t index; 622daaff0a8975 Ryusuke Konishi 2010-12-26 485 unsigned int nblocks_in_page; 622daaff0a8975 Ryusuke Konishi 2010-12-26 486 unsigned long length = 0; 622daaff0a8975 Ryusuke Konishi 2010-12-26 487 sector_t b; ce1966344933bb Vishal Moola (Oracle 2022-08-15 488) struct folio_batch fbatch; ce1966344933bb Vishal Moola (Oracle 2022-08-15 489) struct folio *folio; 622daaff0a8975 Ryusuke Konishi 2010-12-26 490 622daaff0a8975 Ryusuke Konishi 2010-12-26 491 if (inode->i_mapping->nrpages == 0) 622daaff0a8975 Ryusuke Konishi 2010-12-26 492 return 0; 622daaff0a8975 Ryusuke Konishi 2010-12-26 493 09cbfeaf1a5a67 Kirill A. Shutemov 2016-04-01 494 index = start_blk >> (PAGE_SHIFT - inode->i_blkbits); 09cbfeaf1a5a67 Kirill A. Shutemov 2016-04-01 495 nblocks_in_page = 1U << (PAGE_SHIFT - inode->i_blkbits); 622daaff0a8975 Ryusuke Konishi 2010-12-26 496 ce1966344933bb Vishal Moola (Oracle 2022-08-15 497) folio_batch_init(&fbatch); 622daaff0a8975 Ryusuke Konishi 2010-12-26 498 622daaff0a8975 Ryusuke Konishi 2010-12-26 499 repeat: ce1966344933bb Vishal Moola (Oracle 2022-08-15 500) nr = filemap_get_folios_contig(inode->i_mapping, &index, ULONG_MAX, ce1966344933bb Vishal Moola (Oracle 2022-08-15 501) &fbatch); ce1966344933bb Vishal Moola (Oracle 2022-08-15 502) if (nr == 0) 622daaff0a8975 Ryusuke Konishi 2010-12-26 503 return length; 622daaff0a8975 Ryusuke Konishi 2010-12-26 504 ce1966344933bb Vishal Moola (Oracle 2022-08-15 505) b = fbatch.folios[0]->index << (PAGE_SHIFT - inode->i_blkbits); 622daaff0a8975 Ryusuke Konishi 2010-12-26 506 i = 0; 622daaff0a8975 Ryusuke Konishi 2010-12-26 507 do { ce1966344933bb Vishal Moola (Oracle 2022-08-15 508) folio = fbatch.folios[i]; 622daaff0a8975 Ryusuke Konishi 2010-12-26 509 ce1966344933bb Vishal Moola (Oracle 2022-08-15 510) folio_lock(folio); ce1966344933bb Vishal Moola (Oracle 2022-08-15 511) if (folio_buffers(folio)) { 622daaff0a8975 Ryusuke Konishi 2010-12-26 512 struct buffer_head *bh, *head; 622daaff0a8975 Ryusuke Konishi 2010-12-26 513 ce1966344933bb Vishal Moola (Oracle 2022-08-15 514) bh = head = folio_buffers(folio); 622daaff0a8975 Ryusuke Konishi 2010-12-26 515 do { 622daaff0a8975 Ryusuke Konishi 2010-12-26 516 if (b < start_blk) 622daaff0a8975 Ryusuke Konishi 2010-12-26 517 continue; 622daaff0a8975 Ryusuke Konishi 2010-12-26 518 if (buffer_delay(bh)) { 622daaff0a8975 Ryusuke Konishi 2010-12-26 519 if (length == 0) 622daaff0a8975 Ryusuke Konishi 2010-12-26 520 *blkoff = b; 622daaff0a8975 Ryusuke Konishi 2010-12-26 521 length++; 622daaff0a8975 Ryusuke Konishi 2010-12-26 522 } else if (length > 0) { 622daaff0a8975 Ryusuke Konishi 2010-12-26 523 goto out_locked; 622daaff0a8975 Ryusuke Konishi 2010-12-26 524 } 622daaff0a8975 Ryusuke Konishi 2010-12-26 525 } while (++b, bh = bh->b_this_page, bh != head); 622daaff0a8975 Ryusuke Konishi 2010-12-26 526 } else { 622daaff0a8975 Ryusuke Konishi 2010-12-26 527 if (length > 0) 622daaff0a8975 Ryusuke Konishi 2010-12-26 528 goto out_locked; 622daaff0a8975 Ryusuke Konishi 2010-12-26 529 622daaff0a8975 Ryusuke Konishi 2010-12-26 530 b += nblocks_in_page; 622daaff0a8975 Ryusuke Konishi 2010-12-26 531 } ce1966344933bb Vishal Moola (Oracle 2022-08-15 532) folio_unlock(folio); 622daaff0a8975 Ryusuke Konishi 2010-12-26 533 ce1966344933bb Vishal Moola (Oracle 2022-08-15 534) } while (++i < nr); 622daaff0a8975 Ryusuke Konishi 2010-12-26 535 ce1966344933bb Vishal Moola (Oracle 2022-08-15 536) folio_batch_release(&fbatch); 622daaff0a8975 Ryusuke Konishi 2010-12-26 537 cond_resched(); 622daaff0a8975 Ryusuke Konishi 2010-12-26 538 goto repeat; 622daaff0a8975 Ryusuke Konishi 2010-12-26 539 622daaff0a8975 Ryusuke Konishi 2010-12-26 540 out_locked: ce1966344933bb Vishal Moola (Oracle 2022-08-15 541) folio_unlock(folio); 622daaff0a8975 Ryusuke Konishi 2010-12-26 @542 out: -- 0-DAY CI Kernel Test Service https://01.org/lkp
