Re: [PATCH v1 1/3] jbd2: Avoid printing out the boundary

kernel test robot
2023-03-22T16:46:09Z

Hi Andy,

I love your patch! Perhaps something to improve:

[auto build test WARNING on driver-core/driver-core-testing]
[also build test WARNING on driver-core/driver-core-next driver-core/driver-core-linus kees/for-next/pstore kees/for-next/kspp tytso-ext4/dev linus/master v6.3-rc3 next-20230322]
[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/Andy-Shevchenko/jbd2-Avoid-printing-out-the-boundary/20230322-221425
patch link: https://lore.kernel.org/r/20230322141206.56347-2-andriy.shevchenko%40linux.intel.com
patch subject: [PATCH v1 1/3] jbd2: Avoid printing out the boundary
config: x86_64-kexec (https://download.01.org/0day-ci/archive/20230323/202303230045.2JeedPWH-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.3.0-8) 11.3.0
reproduce (this is a W=1 build):
# https://github.com/intel-lab-lkp/linux/commit/6154f5a987ef2ce0084db0eb245d2c3bcde2a02a
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Andy-Shevchenko/jbd2-Avoid-printing-out-the-boundary/20230322-221425
git checkout 6154f5a987ef2ce0084db0eb245d2c3bcde2a02a
# save the config file
mkdir build_dir && cp config build_dir/.config
make W=1 O=build_dir ARCH=x86_64 olddefconfig
make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash fs/jbd2/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202303230045.2JeedPWH-lkp@intel.com/

All warnings (new ones prefixed by >>):

fs/jbd2/journal.c: In function 'jbd2_journal_init_inode':
>> fs/jbd2/journal.c:1491:15: warning: unused variable 'p' [-Wunused-variable]
1491 | char *p;
| ^

vim +/p +1491 fs/jbd2/journal.c

470decc613ab20 Dave Kleikamp 2006-10-11 1478
470decc613ab20 Dave Kleikamp 2006-10-11 1479 /**
f7f4bccb729844 Mingming Cao 2006-10-11 1480 * journal_t * jbd2_journal_init_inode () - creates a journal which maps to a inode.
470decc613ab20 Dave Kleikamp 2006-10-11 1481 * @inode: An inode to create the journal in
470decc613ab20 Dave Kleikamp 2006-10-11 1482 *
f7f4bccb729844 Mingming Cao 2006-10-11 1483 * jbd2_journal_init_inode creates a journal which maps an on-disk inode as
470decc613ab20 Dave Kleikamp 2006-10-11 1484 * the journal. The inode must exist already, must support bmap() and
470decc613ab20 Dave Kleikamp 2006-10-11 1485 * must have all data blocks preallocated.
470decc613ab20 Dave Kleikamp 2006-10-11 1486 */
f7f4bccb729844 Mingming Cao 2006-10-11 1487 journal_t *jbd2_journal_init_inode(struct inode *inode)
470decc613ab20 Dave Kleikamp 2006-10-11 1488 {
f0c9fd5458bacf Geliang Tang 2016-09-15 1489 journal_t *journal;
30460e1ea3e62f Carlos Maiolino 2020-01-09 1490 sector_t blocknr;
05496769e5da83 Theodore Ts'o 2008-09-16 @1491 char *p;
30460e1ea3e62f Carlos Maiolino 2020-01-09 1492 int err = 0;
30460e1ea3e62f Carlos Maiolino 2020-01-09 1493
30460e1ea3e62f Carlos Maiolino 2020-01-09 1494 blocknr = 0;
30460e1ea3e62f Carlos Maiolino 2020-01-09 1495 err = bmap(inode, &blocknr);
470decc613ab20 Dave Kleikamp 2006-10-11 1496
30460e1ea3e62f Carlos Maiolino 2020-01-09 1497 if (err || !blocknr) {
f0c9fd5458bacf Geliang Tang 2016-09-15 1498 pr_err("%s: Cannot locate journal superblock\n",
f0c9fd5458bacf Geliang Tang 2016-09-15 1499 __func__);
f0c9fd5458bacf Geliang Tang 2016-09-15 1500 return NULL;
f0c9fd5458bacf Geliang Tang 2016-09-15 1501 }
f0c9fd5458bacf Geliang Tang 2016-09-15 1502
cb3b3bf22cf337 Jan Kara 2022-06-08 1503 jbd2_debug(1, "JBD2: inode %s/%ld, size %lld, bits %d, blksize %ld\n",
f0c9fd5458bacf Geliang Tang 2016-09-15 1504 inode->i_sb->s_id, inode->i_ino, (long long) inode->i_size,
f0c9fd5458bacf Geliang Tang 2016-09-15 1505 inode->i_sb->s_blocksize_bits, inode->i_sb->s_blocksize);
f0c9fd5458bacf Geliang Tang 2016-09-15 1506
f0c9fd5458bacf Geliang Tang 2016-09-15 1507 journal = journal_init_common(inode->i_sb->s_bdev, inode->i_sb->s_bdev,
f0c9fd5458bacf Geliang Tang 2016-09-15 1508 blocknr, inode->i_size >> inode->i_sb->s_blocksize_bits,
f0c9fd5458bacf Geliang Tang 2016-09-15 1509 inode->i_sb->s_blocksize);
470decc613ab20 Dave Kleikamp 2006-10-11 1510 if (!journal)
470decc613ab20 Dave Kleikamp 2006-10-11 1511 return NULL;
470decc613ab20 Dave Kleikamp 2006-10-11 1512
470decc613ab20 Dave Kleikamp 2006-10-11 1513 journal->j_inode = inode;
900d156bac2bc4 Christoph Hellwig 2022-07-13 1514 snprintf(journal->j_devname, sizeof(journal->j_devname),
6154f5a987ef2c Andy Shevchenko 2023-03-22 1515 "%pg-%lu", journal->j_dev, journal->j_inode->i_ino);
6154f5a987ef2c Andy Shevchenko 2023-03-22 1516 strreplace(journal->j_devname, '/', '!');
8e85fb3f305b24 Johann Lombardi 2008-01-28 1517 jbd2_stats_proc_init(journal);
470decc613ab20 Dave Kleikamp 2006-10-11 1518
470decc613ab20 Dave Kleikamp 2006-10-11 1519 return journal;
470decc613ab20 Dave Kleikamp 2006-10-11 1520 }
470decc613ab20 Dave Kleikamp 2006-10-11 1521

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