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Subjectfs/xfs/xfs_icache.c:321:1: warning: unused function 'xfs_inew_wait'
tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: c8c109546a19613d323a319d0c921cb1f317e629
commit: 777eb1fa857ec38afd518b3adc25cfac0f4af13b xfs: remove xfs_dqrele_all_inodes
date: 3 months ago
config: mips-randconfig-r002-20211113 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project c3dddeeafb529e769cde87bd29ef6271ac6bfa5c)
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 mips cross compiling tool for clang build
# apt-get install binutils-mips-linux-gnu
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=777eb1fa857ec38afd518b3adc25cfac0f4af13b
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 777eb1fa857ec38afd518b3adc25cfac0f4af13b
# save the attached .config to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=mips SHELL=/bin/bash drivers/pci/controller/ fs/xfs/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

>> fs/xfs/xfs_icache.c:321:1: warning: unused function 'xfs_inew_wait'
xfs_inew_wait(
^
fatal error: error in backend: Nested variants found in inline asm string: '.if ( 0x00 ) != -1)) 0x00 ) != -1)) : ($( static struct ftrace_branch_data __attribute__((__aligned__(4))) __attribute__((__section__("_ftrace_branch"))) __if_trace = $( .func = __func__, .file = "arch/mips/include/asm/barrier.h", .line = 27, $); 0x00 ) != -1)) : $))) ) && ( (1 << 0) ); .set push; .set mips64r2; .rept 1; sync 0x00; .endr; .set pop; .else; ; .endif'
clang-14: error: clang frontend command failed with exit code 70 (use -v to see invocation)
clang version 14.0.0 (git://gitmirror/llvm_project c3dddeeafb529e769cde87bd29ef6271ac6bfa5c)
Target: mips64el-unknown-linux
Thread model: posix
InstalledDir: /opt/cross/clang-c3dddeeafb/bin
clang-14: note: diagnostic msg:
Makefile arch drivers fs include kernel nr_bisected scripts source usr virt


vim +/xfs_inew_wait +321 fs/xfs/xfs_icache.c

ad438c4038968e Dave Chinner 2016-05-18 319
7fdff52623b4df Darrick J. Wong 2021-05-31 320 static inline void
ae2c4ac2dd39b2 Brian Foster 2017-04-26 @321 xfs_inew_wait(
ae2c4ac2dd39b2 Brian Foster 2017-04-26 322 struct xfs_inode *ip)
ae2c4ac2dd39b2 Brian Foster 2017-04-26 323 {
ae2c4ac2dd39b2 Brian Foster 2017-04-26 324 wait_queue_head_t *wq = bit_waitqueue(&ip->i_flags, __XFS_INEW_BIT);
ae2c4ac2dd39b2 Brian Foster 2017-04-26 325 DEFINE_WAIT_BIT(wait, &ip->i_flags, __XFS_INEW_BIT);
ae2c4ac2dd39b2 Brian Foster 2017-04-26 326
ae2c4ac2dd39b2 Brian Foster 2017-04-26 327 do {
2141713616c652 Ingo Molnar 2017-03-05 328 prepare_to_wait(wq, &wait.wq_entry, TASK_UNINTERRUPTIBLE);
ae2c4ac2dd39b2 Brian Foster 2017-04-26 329 if (!xfs_iflags_test(ip, XFS_INEW))
ae2c4ac2dd39b2 Brian Foster 2017-04-26 330 break;
ae2c4ac2dd39b2 Brian Foster 2017-04-26 331 schedule();
ae2c4ac2dd39b2 Brian Foster 2017-04-26 332 } while (true);
2141713616c652 Ingo Molnar 2017-03-05 333 finish_wait(wq, &wait.wq_entry);
ae2c4ac2dd39b2 Brian Foster 2017-04-26 334 }
ae2c4ac2dd39b2 Brian Foster 2017-04-26 335

:::::: The code at line 321 was first introduced by commit
:::::: ae2c4ac2dd39b23a87ddb14ceddc3f2872c6aef5 xfs: update ag iterator to support wait on new inodes

:::::: TO: Brian Foster <bfoster@redhat.com>
:::::: CC: Darrick J. Wong <darrick.wong@oracle.com>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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