linux-kernel - drivers/md/bcache/request.c:309: warning: Function parameter or member 'bch_data_insert' not described in 'CLOSURE

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Date: Sun, 7 Jan 2024 16:01:09 +0800
From: kernel test robot <lkp@...el.com>
To: Kent Overstreet <kent.overstreet@...ux.dev>
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
	linux-kernel@...r.kernel.org
Subject: drivers/md/bcache/request.c:309: warning: Function parameter or
 member 'bch_data_insert' not described in 'CLOSURE_CALLBACK'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   52b1853b080a082ec3749c3a9577f6c71b1d4a90
commit: d4e3b928ab487a8aecd1f6a140b40ac365116cfb closures: CLOSURE_CALLBACK() to fix type punning
date:   6 weeks ago
config: i386-buildonly-randconfig-001-20240107 (https://download.01.org/0day-ci/archive/20240107/202401071547.Zr3Ffy8F-lkp@intel.com/config)
compiler: ClangBuiltLinux clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240107/202401071547.Zr3Ffy8F-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/202401071547.Zr3Ffy8F-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/md/bcache/request.c:309: warning: Function parameter or member 'bch_data_insert' not described in 'CLOSURE_CALLBACK'
>> drivers/md/bcache/request.c:309: warning: expecting prototype for bch_data_insert(). Prototype was for CLOSURE_CALLBACK() instead


vim +309 drivers/md/bcache/request.c

cafe563591446c Kent Overstreet 2013-03-23  287  
cafe563591446c Kent Overstreet 2013-03-23  288  /**
a34a8bfd4e6358 Kent Overstreet 2013-10-24  289   * bch_data_insert - stick some data in the cache
47344e330eabc1 Bart Van Assche 2018-03-18  290   * @cl: closure pointer.
cafe563591446c Kent Overstreet 2013-03-23  291   *
cafe563591446c Kent Overstreet 2013-03-23  292   * This is the starting point for any data to end up in a cache device; it could
cafe563591446c Kent Overstreet 2013-03-23  293   * be from a normal write, or a writeback write, or a write to a flash only
cafe563591446c Kent Overstreet 2013-03-23  294   * volume - it's also used by the moving garbage collector to compact data in
cafe563591446c Kent Overstreet 2013-03-23  295   * mostly empty buckets.
cafe563591446c Kent Overstreet 2013-03-23  296   *
cafe563591446c Kent Overstreet 2013-03-23  297   * It first writes the data to the cache, creating a list of keys to be inserted
cafe563591446c Kent Overstreet 2013-03-23  298   * (if the data had to be fragmented there will be multiple keys); after the
cafe563591446c Kent Overstreet 2013-03-23  299   * data is written it calls bch_journal, and after the keys have been added to
cafe563591446c Kent Overstreet 2013-03-23  300   * the next journal write they're inserted into the btree.
cafe563591446c Kent Overstreet 2013-03-23  301   *
3db4d0783eaf2a Shenghui Wang   2018-12-13  302   * It inserts the data in op->bio; bi_sector is used for the key offset,
cafe563591446c Kent Overstreet 2013-03-23  303   * and op->inode is used for the key inode.
cafe563591446c Kent Overstreet 2013-03-23  304   *
3db4d0783eaf2a Shenghui Wang   2018-12-13  305   * If op->bypass is true, instead of inserting the data it invalidates the
3db4d0783eaf2a Shenghui Wang   2018-12-13  306   * region of the cache represented by op->bio and op->inode.
cafe563591446c Kent Overstreet 2013-03-23  307   */
d4e3b928ab487a Kent Overstreet 2023-11-17  308  CLOSURE_CALLBACK(bch_data_insert)
cafe563591446c Kent Overstreet 2013-03-23 @309  {
d4e3b928ab487a Kent Overstreet 2023-11-17  310  	closure_type(op, struct data_insert_op, cl);
cafe563591446c Kent Overstreet 2013-03-23  311  
60ae81eee86dd7 Slava Pestov    2014-05-22  312  	trace_bcache_write(op->c, op->inode, op->bio,
60ae81eee86dd7 Slava Pestov    2014-05-22  313  			   op->writeback, op->bypass);
220bb38c21b83e Kent Overstreet 2013-09-10  314  
220bb38c21b83e Kent Overstreet 2013-09-10  315  	bch_keylist_init(&op->insert_keys);
220bb38c21b83e Kent Overstreet 2013-09-10  316  	bio_get(op->bio);
d4e3b928ab487a Kent Overstreet 2023-11-17  317  	bch_data_insert_start(&cl->work);
cafe563591446c Kent Overstreet 2013-03-23  318  }
cafe563591446c Kent Overstreet 2013-03-23  319  

:::::: The code at line 309 was first introduced by commit
:::::: cafe563591446cf80bfbc2fe3bc72a2e36cf1060 bcache: A block layer cache

:::::: TO: Kent Overstreet <koverstreet@...gle.com>
:::::: CC: Kent Overstreet <koverstreet@...gle.com>

-- 
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https://github.com/intel/lkp-tests/wiki