include/trace/events/jbd2.h:356:1: sparse: sparse: cast to restricted blk_opf_t

From: kernel test robot
Date: Mon Jan 08 2024 - 22:24:18 EST


tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: f0a78b3e2a0c842cc7b4c2686f4a35681f02ca72
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/20240109/202401091111.p7s9wEEq-lkp@xxxxxxxxx/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/20240109/202401091111.p7s9wEEq-lkp@xxxxxxxxx/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@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202401091111.p7s9wEEq-lkp@xxxxxxxxx/

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@xxxxxxx>
:::::: CC: Theodore Ts'o <tytso@xxxxxxx>

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