[bvanassche:mq-deadline 4/4] block/mq-deadline.c:222:16: error: call to undeclared function 'blk_rq_zone_no'; ISO C99 and later do not support implicit function declarations

[bvanassche:mq-deadline 4/4] block/mq-deadline.c:222:16: error: call to undeclared function 'blk_rq_zone_no'; ISO C99 and later do not support implicit function declarations

[kernel test robot]

tree:   https://github.com/bvanassche/linux mq-deadline
head:   f1201b17a2fec011e8cdd6be24a413a5693941b7
commit: f1201b17a2fec011e8cdd6be24a413a5693941b7 [4/4] block/mq-deadline: Prevent zoned write reordering due to I/O prioritization
config: i386-randconfig-016-20231218 (https://download.01.org/0day-ci/archive/20231219/202312190011.JYlG3HVC-lkp@intel.com/config)
compiler: clang version 16.0.4 (https://github.com/llvm/llvm-project.git ae42196bc493ffe877a7e3dff8be32035dea4d07)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231219/202312190011.JYlG3HVC-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202312190011.JYlG3HVC-lkp@intel.com/

All errors (new ones prefixed by >>):

>> block/mq-deadline.c:222:16: error: call to undeclared function 'blk_rq_zone_no'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
                   while (rq && blk_rq_zone_no(rq) == zno) {
                                ^
   1 error generated.


vim +/blk_rq_zone_no +222 block/mq-deadline.c

   204	
   205	/*
   206	 * If any sequential write requests are pending for the zone containing @pos,
   207	 * return the I/O priority for these write requests.
   208	 */
   209	static enum dd_prio dd_zone_prio(struct deadline_data *dd,
   210					 struct block_device *bdev, sector_t pos)
   211	{
   212		struct gendisk *disk = bdev->bd_disk;
   213		const unsigned int zno = disk_zone_no(disk, pos);
   214		enum dd_prio prio;
   215	
   216		pos -= bdev_offset_from_zone_start(bdev, pos);
   217		for (prio = DD_PRIO_MIN; prio <= DD_PRIO_MAX; prio++) {
   218			struct dd_per_prio *per_prio = &dd->per_prio[prio];
   219			struct request *rq;
   220	
   221			rq = deadline_first_rq_past_pos(per_prio, DD_WRITE, pos);
 > 222			while (rq && blk_rq_zone_no(rq) == zno) {
   223				struct rb_node *node;
   224	
   225				if (blk_rq_is_seq_zoned_write(rq))
   226					return prio;
   227				node = rb_next(&rq->rb_node);
   228				if (!node)
   229					break;
   230				rq = rb_entry_rq(node);
   231			}
   232		}
   233		return DD_INVALID_PRIO;
   234	}
   235	

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