Hi NeilBrown, Thank you for the patch! Yet something to improve: [auto build test ERROR on jaegeuk-f2fs/dev-test] [also build test ERROR on v5.16-rc1 next-20211118] [cannot apply to tytso-ext4/dev xfs-linux/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] url: https://github.com/0day-ci/linux/commits/NeilBrown/MM-introduce-memalloc_... base: https://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs.git dev-test config: riscv-randconfig-r004-20211118 (attached as .config) 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 riscv cross compiling tool for clang build # apt-get install binutils-riscv64-linux-gnu # https://github.com/0day-ci/linux/commit/1da355dc212c5f6ade3a21d4a5b1cfaf6... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review NeilBrown/MM-introduce-memalloc_retry_wait/20211117-122932 git checkout 1da355dc212c5f6ade3a21d4a5b1cfaf6b48ff0f # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=riscv If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): memalloc_retry_wait(GFP_NOFS); ^ 1 error generated. vim +/memalloc_retry_wait +2417 fs/f2fs/super.c 2389 2390 #ifdef CONFIG_QUOTA 2391 /* Read data from quotafile */ 2392 static ssize_t f2fs_quota_read(struct super_block *sb, int type, char *data, 2393 size_t len, loff_t off) 2394 { 2395 struct inode *inode = sb_dqopt(sb)->files[type]; 2396 struct address_space *mapping = inode->i_mapping; 2397 block_t blkidx = F2FS_BYTES_TO_BLK(off); 2398 int offset = off & (sb->s_blocksize - 1); 2399 int tocopy; 2400 size_t toread; 2401 loff_t i_size = i_size_read(inode); 2402 struct page *page; 2403 char *kaddr; 2404 2405 if (off > i_size) 2406 return 0; 2407 2408 if (off + len > i_size) 2409 len = i_size - off; 2410 toread = len; 2411 while (toread > 0) { 2412 tocopy = min_t(unsigned long, sb->s_blocksize - offset, toread); 2413 repeat: 2414 page = read_cache_page_gfp(mapping, blkidx, GFP_NOFS); 2415 if (IS_ERR(page)) { 2416 if (PTR_ERR(page) == -ENOMEM) { 2418 goto repeat; 2419 } 2420 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); 2421 return PTR_ERR(page); 2422 } 2423 2424 lock_page(page); 2425 2426 if (unlikely(page->mapping != mapping)) { 2427 f2fs_put_page(page, 1); 2428 goto repeat; 2429 } 2430 if (unlikely(!PageUptodate(page))) { 2431 f2fs_put_page(page, 1); 2432 set_sbi_flag(F2FS_SB(sb), SBI_QUOTA_NEED_REPAIR); 2433 return -EIO; 2434 } 2435 2436 kaddr = kmap_atomic(page); 2437 memcpy(data, kaddr + offset, tocopy); 2438 kunmap_atomic(kaddr); 2439 f2fs_put_page(page, 1); 2440 2441 offset = 0; 2442 toread -= tocopy; 2443 data += tocopy; 2444 blkidx++; 2445 } 2446 return len; 2447 } 2448 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org