linux-kernel - include/trace/events/jbd2.h:356:1: sparse: sparse: cast to restricted blk_opf

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Date: Mon, 15 Jan 2024 12:28:27 +0800
From: kernel test robot <lkp@...el.com>
To: Bart Van Assche <bvanassche@....org>
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
	Jens Axboe <axboe@...nel.dk>
Subject: include/trace/events/jbd2.h:356:1: sparse: sparse: cast to
 restricted blk_opf_t

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   052d534373b7ed33712a63d5e17b2b6cdbce84fd
commit: 6669797b0dd41ced457760b6e1014fdda8ce19ce fs/jbd2: Fix the documentation of the jbd2_write_superblock() callers
date:   1 year, 6 months ago
config: x86_64-randconfig-121-20240107 (https://download.01.org/0day-ci/archive/20240115/202401151239.cNgBQqgO-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240115/202401151239.cNgBQqgO-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202401151239.cNgBQqgO-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
   fs/jbd2/journal.c: note: in included file (through include/trace/trace_events.h, include/trace/define_trace.h, include/trace/events/jbd2.h):
>> include/trace/events/jbd2.h:356:1: sparse: sparse: cast to restricted blk_opf_t
>> include/trace/events/jbd2.h:356:1: sparse: sparse: cast to restricted blk_opf_t
>> include/trace/events/jbd2.h:356:1: sparse: sparse: restricted blk_opf_t degrades to integer
>> include/trace/events/jbd2.h:356:1: sparse: sparse: restricted blk_opf_t degrades to integer

vim +356 include/trace/events/jbd2.h

71f2be213a00090 Theodore Ts'o   2009-12-23  355  
24bcc89c7e7c649 Jan Kara        2012-03-13 @356  TRACE_EVENT(jbd2_write_superblock,
2201c590dd6e802 Seiji Aguchi    2012-02-20  357  
6669797b0dd41ce Bart Van Assche 2022-07-14  358  	TP_PROTO(journal_t *journal, blk_opf_t write_flags),
2201c590dd6e802 Seiji Aguchi    2012-02-20  359  
6669797b0dd41ce Bart Van Assche 2022-07-14  360  	TP_ARGS(journal, write_flags),
2201c590dd6e802 Seiji Aguchi    2012-02-20  361  
2201c590dd6e802 Seiji Aguchi    2012-02-20  362  	TP_STRUCT__entry(
2201c590dd6e802 Seiji Aguchi    2012-02-20  363  		__field(	dev_t,  dev			)
6669797b0dd41ce Bart Van Assche 2022-07-14  364  		__field(    blk_opf_t,  write_flags		)
2201c590dd6e802 Seiji Aguchi    2012-02-20  365  	),
2201c590dd6e802 Seiji Aguchi    2012-02-20  366  
2201c590dd6e802 Seiji Aguchi    2012-02-20  367  	TP_fast_assign(
2201c590dd6e802 Seiji Aguchi    2012-02-20  368  		__entry->dev		= journal->j_fs_dev->bd_dev;
6669797b0dd41ce Bart Van Assche 2022-07-14  369  		__entry->write_flags	= write_flags;
2201c590dd6e802 Seiji Aguchi    2012-02-20  370  	),
2201c590dd6e802 Seiji Aguchi    2012-02-20  371  
6669797b0dd41ce Bart Van Assche 2022-07-14  372  	TP_printk("dev %d,%d write_flags %x", MAJOR(__entry->dev),
6669797b0dd41ce Bart Van Assche 2022-07-14  373  		  MINOR(__entry->dev), (__force u32)__entry->write_flags)
2201c590dd6e802 Seiji Aguchi    2012-02-20  374  );
2201c590dd6e802 Seiji Aguchi    2012-02-20  375  

:::::: The code at line 356 was first introduced by commit
:::::: 24bcc89c7e7c64982e6192b4952a0a92379fc341 jbd2: split updating of journal superblock and marking journal empty

:::::: TO: Jan Kara <jack@...e.cz>
:::::: CC: Theodore Ts'o <tytso@....edu>

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki