tree: https://git.kernel.org/pub/scm/linux/kernel/git/djwong/xfs-linux.git repair-metadata-atomically head: 03560ddd3fbb967b10047a3d7a31266990f797cf commit: ad2ea322f076aef144f3b3e9f4d7e3898f34e317 [127/227] xfs: teach online directory repair to scan for the parent config: x86_64-allyesconfig (attached as .config) compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project e6658079aca6d971b4e9d7137a3a2ecbc9c34aec) reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu git checkout ad2ea322f076aef144f3b3e9f4d7e3898f34e317 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>, old ones prefixed by <<): xchk_parent_count_parent_dentries( ^ fs/xfs/scrub/parent.c:70:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int ^ static 1 warning generated. vim +/xchk_parent_count_parent_dentries +71 fs/xfs/scrub/parent.c 0f28b25731f76f Darrick J. Wong 2017-10-17 68 0f28b25731f76f Darrick J. Wong 2017-10-17 69 /* Count the number of dentries in the parent dir that point to this inode. */ ad2ea322f076ae Darrick J. Wong 2020-03-19 70 int c517b3aa02cff1 Darrick J. Wong 2018-07-19 @71 xchk_parent_count_parent_dentries( 1d8a748a8aa94a Darrick J. Wong 2018-07-19 72 struct xfs_scrub *sc, 0f28b25731f76f Darrick J. Wong 2017-10-17 73 struct xfs_inode *parent, 0f28b25731f76f Darrick J. Wong 2017-10-17 74 xfs_nlink_t *nlink) 0f28b25731f76f Darrick J. Wong 2017-10-17 75 { c517b3aa02cff1 Darrick J. Wong 2018-07-19 76 struct xchk_parent_ctx spc = { c517b3aa02cff1 Darrick J. Wong 2018-07-19 77 .dc.actor = xchk_parent_actor, 0f28b25731f76f Darrick J. Wong 2017-10-17 78 .ino = sc->ip->i_ino, 8feb4732ff9f27 Darrick J. Wong 2019-11-25 79 .sc = sc, 0f28b25731f76f Darrick J. Wong 2017-10-17 80 }; 0f28b25731f76f Darrick J. Wong 2017-10-17 81 size_t bufsize; 0f28b25731f76f Darrick J. Wong 2017-10-17 82 loff_t oldpos; 0f28b25731f76f Darrick J. Wong 2017-10-17 83 uint lock_mode; 0f28b25731f76f Darrick J. Wong 2017-10-17 84 int error = 0; 0f28b25731f76f Darrick J. Wong 2017-10-17 85 0f28b25731f76f Darrick J. Wong 2017-10-17 86 /* 0f28b25731f76f Darrick J. Wong 2017-10-17 87 * If there are any blocks, read-ahead block 0 as we're almost 0f28b25731f76f Darrick J. Wong 2017-10-17 88 * certain to have the next operation be a read there. This is 0f28b25731f76f Darrick J. Wong 2017-10-17 89 * how we guarantee that the parent's extent map has been loaded, 0f28b25731f76f Darrick J. Wong 2017-10-17 90 * if there is one. 0f28b25731f76f Darrick J. Wong 2017-10-17 91 */ 0f28b25731f76f Darrick J. Wong 2017-10-17 92 lock_mode = xfs_ilock_data_map_shared(parent); 0f28b25731f76f Darrick J. Wong 2017-10-17 93 if (parent->i_d.di_nextents > 0) 06566fda428e64 Christoph Hellwig 2019-11-20 94 error = xfs_dir3_data_readahead(parent, 0, 0); 0f28b25731f76f Darrick J. Wong 2017-10-17 95 xfs_iunlock(parent, lock_mode); 0f28b25731f76f Darrick J. Wong 2017-10-17 96 if (error) 0f28b25731f76f Darrick J. Wong 2017-10-17 97 return error; 0f28b25731f76f Darrick J. Wong 2017-10-17 98 0f28b25731f76f Darrick J. Wong 2017-10-17 99 /* 0f28b25731f76f Darrick J. Wong 2017-10-17 100 * Iterate the parent dir to confirm that there is 0f28b25731f76f Darrick J. Wong 2017-10-17 101 * exactly one entry pointing back to the inode being 0f28b25731f76f Darrick J. Wong 2017-10-17 102 * scanned. 0f28b25731f76f Darrick J. Wong 2017-10-17 103 */ 0f28b25731f76f Darrick J. Wong 2017-10-17 104 bufsize = (size_t)min_t(loff_t, XFS_READDIR_BUFSIZE, 0f28b25731f76f Darrick J. Wong 2017-10-17 105 parent->i_d.di_size); 0f28b25731f76f Darrick J. Wong 2017-10-17 106 oldpos = 0; 0f28b25731f76f Darrick J. Wong 2017-10-17 107 while (true) { 0f28b25731f76f Darrick J. Wong 2017-10-17 108 error = xfs_readdir(sc->tp, parent, &spc.dc, bufsize); 0f28b25731f76f Darrick J. Wong 2017-10-17 109 if (error) 0f28b25731f76f Darrick J. Wong 2017-10-17 110 goto out; 8feb4732ff9f27 Darrick J. Wong 2019-11-25 111 if (spc.cancelled) { 8feb4732ff9f27 Darrick J. Wong 2019-11-25 112 error = -EAGAIN; 8feb4732ff9f27 Darrick J. Wong 2019-11-25 113 goto out; 8feb4732ff9f27 Darrick J. Wong 2019-11-25 114 } 0f28b25731f76f Darrick J. Wong 2017-10-17 115 if (oldpos == spc.dc.pos) 0f28b25731f76f Darrick J. Wong 2017-10-17 116 break; 0f28b25731f76f Darrick J. Wong 2017-10-17 117 oldpos = spc.dc.pos; 0f28b25731f76f Darrick J. Wong 2017-10-17 118 } 0f28b25731f76f Darrick J. Wong 2017-10-17 119 *nlink = spc.nlink; 0f28b25731f76f Darrick J. Wong 2017-10-17 120 out: 0f28b25731f76f Darrick J. Wong 2017-10-17 121 return error; 0f28b25731f76f Darrick J. Wong 2017-10-17 122 } 0f28b25731f76f Darrick J. Wong 2017-10-17 123 :::::: The code at line 71 was first introduced by commit :::::: c517b3aa02cff1dd688aa783b748e06c8aee1285 xfs: shorten xfs_scrub_ prefix :::::: TO: Darrick J. Wong <darrick.wong(a)oracle.com&gt; :::::: CC: Darrick J. Wong <darrick.wong(a)oracle.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org