Re: [PATCH 4/4] nvme-core: Get lowlevel disk for target polling queue task
From: kernel test robot
Date: Wed Sep 13 2023 - 06:18:32 EST
Hi Ping,
kernel test robot noticed the following build warnings:
[auto build test WARNING on v6.6-rc1]
[also build test WARNING on linus/master next-20230913]
[cannot apply to hch-configfs/for-next]
[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/Ping-Gan/nvmet-Add-nvme-target-polling-queue-task-parameters/20230913-164112
base: v6.6-rc1
patch link: https://lore.kernel.org/r/006b6aefe94d73ee64931c769af4a908616439ad.1694592708.git.jacky_gam_2001%40163.com
patch subject: [PATCH 4/4] nvme-core: Get lowlevel disk for target polling queue task
config: m68k-allyesconfig (https://download.01.org/0day-ci/archive/20230913/202309131858.YUV19V9E-lkp@xxxxxxxxx/config)
compiler: m68k-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20230913/202309131858.YUV19V9E-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/202309131858.YUV19V9E-lkp@xxxxxxxxx/
All warnings (new ones prefixed by >>):
>> drivers/nvme/host/multipath.c:375:22: warning: no previous prototype for 'nvme_mpath_get_bdev' [-Wmissing-prototypes]
375 | struct block_device *nvme_mpath_get_bdev(struct block_device *bdev)
| ^~~~~~~~~~~~~~~~~~~
vim +/nvme_mpath_get_bdev +375 drivers/nvme/host/multipath.c
373
374 //for polling queue task to get lowlevel block device
> 375 struct block_device *nvme_mpath_get_bdev(struct block_device *bdev)
376 {
377 struct nvme_ns_head *head = bdev->bd_disk->private_data;
378 int srcu_idx;
379 struct nvme_ns *ns;
380 struct block_device *ret = NULL;
381
382 if (!multipath)
383 return NULL;
384 srcu_idx = srcu_read_lock(&head->srcu);
385 ns = nvme_find_path(head);
386 if (likely(ns))
387 ret = ns->disk->part0;
388 srcu_read_unlock(&head->srcu, srcu_idx);
389 return ret;
390 }
391 EXPORT_SYMBOL_GPL(nvme_mpath_get_bdev);
392
--
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